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Zr对Mg-5Sn合金显微组织与力学性能的影响 被引量:13
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作者 刘红梅 陈云贵 +4 位作者 唐永柏 黄德明 涂铭旌 赵敏 李益国 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2006年第12期1912-1915,共4页
研究了含Zr0.4%~1.2%的Mg-5Sn合金(质量分数,%,下同)的显微组织和力学性能。显微组织观察表明,Zr元素能够起到明显的晶粒细化作用。扫描电镜EDS分析和XRD分析验证了这一结果。力学性能测试结果表明:随着合金中Zr含量的增加,抗拉强度及... 研究了含Zr0.4%~1.2%的Mg-5Sn合金(质量分数,%,下同)的显微组织和力学性能。显微组织观察表明,Zr元素能够起到明显的晶粒细化作用。扫描电镜EDS分析和XRD分析验证了这一结果。力学性能测试结果表明:随着合金中Zr含量的增加,抗拉强度及延伸率都有提高,延伸率提高更显著,Zr的晶粒细化起了主要作用;而合金的显微硬度基本不变,其原因是在合金中没有明显数量的硬质相出现。 展开更多
关键词 mg—sn合金 ZR 晶粒细化 力学性能
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Mg-5wt%Sn合金铸态和时效态的高温蠕变性能 被引量:16
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作者 魏尚海 陈云贵 +4 位作者 刘红梅 唐永伯 肖素芬 牛高 章晓萍 《材料热处理学报》 EI CAS CSCD 北大核心 2008年第3期104-107,共4页
通过压缩蠕变试验研究了铸态和时效态(T6)Mg-5wt%Sn合金在应力为25MPa,温度为150、175和200℃下的高温蠕变性能,并测试了室温拉伸性能。结果表明,时效处理后的压蠕变性能有很大的提高,时效态合金室温抗拉强度也有明显改善。时效态合金... 通过压缩蠕变试验研究了铸态和时效态(T6)Mg-5wt%Sn合金在应力为25MPa,温度为150、175和200℃下的高温蠕变性能,并测试了室温拉伸性能。结果表明,时效处理后的压蠕变性能有很大的提高,时效态合金室温抗拉强度也有明显改善。时效态合金高温压缩蠕变性能的提高和室温强度的改善与Mg2Sn弥散析出强化有关。 展开更多
关键词 mg—sn合金 时效处理 压缩蠕变
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Mg-5Sn-xLa合金的铸态组织与结构分析 被引量:5
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作者 章晓萍 陈云贵 +4 位作者 肖素芬 唐永柏 牛高 魏尚海 赵源华 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2009年第A01期148-150,共3页
用重力铸造法制备了不同La含量的Mg-5Sn-xLa合金。用光学金相、XRD、SEM、EDS等研究手段,研究了添加量在0~6%范围时,La对Mg-5Sn铸造合金组织结构的影响。结果表明:当x≤2%时,La的加入不改变Mg-5Sn合金的相组成,合金仍由α-Mg和(α-Mg+M... 用重力铸造法制备了不同La含量的Mg-5Sn-xLa合金。用光学金相、XRD、SEM、EDS等研究手段,研究了添加量在0~6%范围时,La对Mg-5Sn铸造合金组织结构的影响。结果表明:当x≤2%时,La的加入不改变Mg-5Sn合金的相组成,合金仍由α-Mg和(α-Mg+Mg2Sn)共晶组成;当在2%<x≤6%时,合金中Mg2Sn消失,出现了富含La、Sn的新相,并且随着La含量的增加,新相的含量逐渐增加。 展开更多
关键词 mg—sn合金 重力铸造 LA 组织结构
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Mg及Mg-Sn合金的显微组织和力学性能 被引量:3
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作者 王明亮 金培鹏 +2 位作者 马秀玲 王金辉 韩丽 《铸造技术》 CAS 北大核心 2014年第1期5-7,共3页
采用光学显微镜、扫描电镜、EDX分析及XRD分析研究了铸态Mg-xSn(x=2,4)合金的显微组织和物相组成。采用万能试验机、布氏硬度计测试了合金的拉伸性能和硬度。结果表明,Sn的加入使纯镁铸态组织由粗大的等轴晶转变为树枝晶,晶粒得到明显细... 采用光学显微镜、扫描电镜、EDX分析及XRD分析研究了铸态Mg-xSn(x=2,4)合金的显微组织和物相组成。采用万能试验机、布氏硬度计测试了合金的拉伸性能和硬度。结果表明,Sn的加入使纯镁铸态组织由粗大的等轴晶转变为树枝晶,晶粒得到明显细化,并且随Sn含量的增加细化效果越加明显。组织中同时形成了硬度高、热稳定性好的相Mg2Sn。随着Sn含量的增加,合金的硬度与抗拉强度均有明显提升。 展开更多
关键词 mg—sn合金 细晶强化 第二相强化 显微组织 力学性能
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Al、Zn含量对Mg-5Sn基合金微观组织和力学性能的影响 被引量:2
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作者 韩兆宇 许春香 程伟丽 《铸造》 CAS CSCD 北大核心 2013年第5期430-435,共6页
采用OM、XRD、SEM、EDS和电子材料试验机分别研究了Al、Zn含量对Mg-5Sn-xAl(x=0,1,2,3,4,5)、Mg-5Sn-yZn(y=0,1,2,3,4,5)合金的微观组织和力学性能的影响。结果表明,随着Al含量的增多,晶粒明显细化,晶界上非常明显的析出离异共晶组织(α... 采用OM、XRD、SEM、EDS和电子材料试验机分别研究了Al、Zn含量对Mg-5Sn-xAl(x=0,1,2,3,4,5)、Mg-5Sn-yZn(y=0,1,2,3,4,5)合金的微观组织和力学性能的影响。结果表明,随着Al含量的增多,晶粒明显细化,晶界上非常明显的析出离异共晶组织(α-Mg+Mg2Sn)和离异共晶相Mg17Al12;并发现了综合力学性能较好的镁合金TA55,其抗拉强度为177 MPa、伸长率为11.5%;随着Zn含量的增多,晶粒同样细化,当Zn含量达到3%时,出现MgZn相,此时合金力学性能最好,即为TZ53镁合金,其抗拉强度为182 MPa、伸长率为15%。 展开更多
关键词 mg—sn合金 显微组织 力学性能 mgZn相
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Effects of Ce, Y and Gd additions on as-cast microstructure and mechanical properties of Mg-3Sn-2Sr magnesium alloy 被引量:5
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作者 杨明波 侯梦丹 +1 位作者 张佳 潘复生 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第8期2497-2506,共10页
The effects of Ce, Y and Gd additions on the as-cast microstructure and mechanical properties of Mg-3Sn-2Sr alloy were investigated and compared by scanning electron microscopy, X-ray diffraction, differential scannin... The effects of Ce, Y and Gd additions on the as-cast microstructure and mechanical properties of Mg-3Sn-2Sr alloy were investigated and compared by scanning electron microscopy, X-ray diffraction, differential scanning calorimetry analysis, tensile and creep tests. The results indicate that the Mg-3Sn-2Sr ternary alloy is mainly composed ofα-Mg, primary and eutectic SrMgSn, and Mg2Sn phases. After the additions of 1.0%Ce, 1.0%Y and 1.0%Gd to the Mg-3Sn-2Sr alloy, the Mg12Ce, YMgSn, GdMgSn and/or Mg17Sr2 phases are formed, respectively. At the same time, the formation of the primary SrMgSn phase is suppressed and the coarse needle-like primary SrMgSn phase is modified and refined. In addition, the additions of 1.0% Ce, 1.0% Y and 1.0% Gd to the Mg-3Sn-2Sr alloy can simultaneously improve the tensile and creep properties of the alloy. Among the Ce-, Y-and Gd-containing alloys, the tensile properties of the Ce-containing alloy are relatively higher than those of the Y-and Gd-containing alloys. 展开更多
关键词 mg-sn-Sr alloys CE Y GD Srmgsn phase
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Effects of heat treatment on microstructure and mechanical properties of Mg-3Sn-1Mn magnesium alloy 被引量:5
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作者 杨明波 秦财源 潘复生 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第10期2168-2174,共7页
The effects of heat treatment on the microstructure and mechanical properties of Mg-3Sn-1Mn alloy were preliminarily investigated by using optical and electron microscopy,X-ray diffraction(XRD) analysis,and tensile ... The effects of heat treatment on the microstructure and mechanical properties of Mg-3Sn-1Mn alloy were preliminarily investigated by using optical and electron microscopy,X-ray diffraction(XRD) analysis,and tensile and creep test.The results indicate that the heat treatment has an obvious effect on the microstructure and mechanical properties of the Mg-3Sn-1Mn alloy.After the solid solution treatment at 420 ℃,a majority of the Mg2Sn phases in the alloy are dissolved into the matrix.However,after the further aging treatment at 250 ℃,lots of fine Mg2Sn phases in the aged alloy are precipitated at the grain boundaries and within the grains.As a result,the tensile and creep properties of the aged alloy are significantly improved.The mechanism for the higher tensile and creep properties of the aged alloy is related to the dispersive distribution of the Mg2Sn phase in the--Mg matrix. 展开更多
关键词 mg-sn-Mn alloy heat treatment microstructure mechanical properties
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Microstructure, mechanical and bio-corrosion properties of as-extruded Mg-Sn-Ca alloys 被引量:7
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作者 赵朝勇 潘复生 潘虎成 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第6期1574-1582,共9页
The as-extruded Mg?Sn?Ca alloys were prepared and investigated for orthopedic applications via using optical microscopy, scanning electron microscopy, X-ray diffraction, as well as tensile, immersion and electrochem... The as-extruded Mg?Sn?Ca alloys were prepared and investigated for orthopedic applications via using optical microscopy, scanning electron microscopy, X-ray diffraction, as well as tensile, immersion and electrochemical tests. The results showed that, with the addition of 1% Sn and the Ca content of 0.2%?0.5%, the microstructure of the as-extruded Mg?Sn?Ca alloys became homogenous, which led to increased mechanical properties and improved corrosion resistance. Further increase of Ca content up to 1.5% improved the strength, but deteriorated the ductility and corrosion resistance. For the alloy containing 0.5% Ca, when the Sn content increased from 1% to 3%, the ultimate tensile strength increased with a decreased corrosion resistance, and the lowest yield strength and ductility appeared with the Sn content of 2%. These behaviors were determined by Sn/Ca mass ratio. The analyses showed that as-extruded Mg?1Sn?0.5Ca alloy was promising as a biodegradable orthopedic implant. 展开更多
关键词 magnesium alloy mg-sn-Ca alloy BIODEGRADATION orthopedic implant MICROSTRUCTURE mechanical properties CORROSION
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Microstructures and mechanical properties of extruded and aged Mg-Zn-Mn-Sn-Y alloys 被引量:7
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作者 胡光山 张丁非 +3 位作者 赵丁藏 谌夏 蒋璐瑶 潘复生 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第10期3070-3075,共6页
The microstructures and mechanical properties of Mg-6Zn-1Mn-4Sn and Mg-6Zn-1Mn-4Sn-0.5Y alloys under extrusion and T6 aging conditions were investigated by optical microscopy(OM), X-ray diffraction(XRD), scanning ... The microstructures and mechanical properties of Mg-6Zn-1Mn-4Sn and Mg-6Zn-1Mn-4Sn-0.5Y alloys under extrusion and T6 aging conditions were investigated by optical microscopy(OM), X-ray diffraction(XRD), scanning electron microscopy(SEM) and tensile test. The results show that Y element refines the grains and improves the comprehensive mechanical properties of ZMT614-0.5Y both in as-extruded and T6 states. The phase compositions of Mg-6Zn-1Mn-4Sn-0.5Y are α-Mg, Mg Zn2, Mn, Mg2 Sn and Mg Sn Y phases. After T6 treatment, the ultimate tensile strength(UTS) and yield strength(YS) increase while the elongation decreases severely. For both of these alloys, the theoretical results combined with the experimental values demonstrate that the grain boundary strengthening and solid solution strengthening play an important role in enhancing the YS in the as-extruded state, while the precipitation strengthening is the key factor for the enhancement of YS in the T6 state. 展开更多
关键词 mg-Zn-Mn-sn-Y alloy YTTRIUM extrusion T6 microstructure strengthening mechanism
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Influence of microstructural characteristics on corrosion behavior of Mg-5Sn-3In alloy in Hank’s solution 被引量:4
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作者 Xue-jian WANG Zong-ning CHEN +4 位作者 Yu-bo ZHANG En-yu GUO Hui-jun KANG Pei HAN Tong-min WANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2021年第10期2999-3011,共13页
The microstructural observation,the mass loss test,potentiodynamic polarization measurements and corrosion morphology examinations were conducted to study the influence of microstructural characteristics on corrosion ... The microstructural observation,the mass loss test,potentiodynamic polarization measurements and corrosion morphology examinations were conducted to study the influence of microstructural characteristics on corrosion behavior of Mg–5Sn–3In alloys in Hank’s solution after extrusion.The results show that the corrosion rate of the as-cast alloy is similar to that of as-extruded alloy;however,the local corrosion susceptibility is greatly weakened in the as-extruded alloy,especially in the extrusion direction.The relatively uniform corrosion morphology of the as-extruded alloy is attributed to refined Mg_(2)Sn particles,uniform distribution of Mg_(2)Sn particles and favorable crystal orientation.Meanwhile,the cytotoxicity tests confirm that the Mg–5Sn–3In alloy exhibits cytotoxicity of Grade 0−1 for NIH3T3 cells,suggesting an acceptable cytotoxicity of this alloy in the vitro assay. 展开更多
关键词 mgsn alloy indium element microstructure corrosion behavior CYTOTOXICITY
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Effect of Sn content on microstructure and tensile properties of as-cast and as-extruded Mg-8Li-3Al-(1,2,3)Sn alloys 被引量:11
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作者 Xiao-yang CHEN Yang ZHANG +2 位作者 Meng-qi CONG Ya-lin LU Xiao-ping LI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2020年第8期2079-2089,共11页
The effects of Sn content on microstructure and tensile properties of as-cast and as-extruded Mg-8Li-3Al-(1,2,3)Sn(wt.%)alloys were investigated by X-ray diffractometry(XRD),optical microscopy(OM),scanning electron mi... The effects of Sn content on microstructure and tensile properties of as-cast and as-extruded Mg-8Li-3Al-(1,2,3)Sn(wt.%)alloys were investigated by X-ray diffractometry(XRD),optical microscopy(OM),scanning electron microscopy(SEM)and tensile test.It is found that,as-cast Mg-8Li-3Al-(1,2,3)Sn alloys consist ofα-Mg+β-Li duplex matrix,MgLiAl2 and Li2Mg Sn phases.Increasing Sn content leads to grain refinement ofα-Mg dendrites and increase in content of Li2MgSn phase.During hot extrusion,complete dynamic recrystallization(DRX)takes place inβ-Li phase while incomplete DRX takes place inα-Mg phase.As Sn content is increased,the volume fraction of DRXedα-Mg grains is increased and the average grain size of DRXedα-Mg grains is decreased.Increasing Sn content is beneficial to strength but harmful to ductility for as-cast Mg-8Li-3Al-(1,2,3)Sn alloys.Tensile properties of Mg-8Li-3Al-(1,2,3)Sn alloys are improved significantly via hot extrusion and Mg-8Li-3Al-2Sn alloy exhibits the best tensile properties. 展开更多
关键词 mg-Li-Al-sn alloy as-cast state RECRYSTALLIZATION MICROSTRUCTURE tensile properties
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Effect of Al addition on microstructure and mechanical properties of Mg−Zn−Sn−Mn alloy 被引量:10
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作者 Cai-hong HOU Zhi-song YE +4 位作者 Fu-gang QI Qing WANG Lian-hui LI Xiao-ping OUYANG Nie ZHAO 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2021年第7期1951-1968,共18页
The microstructure and properties of the as-cast,as-homogenized and as-extruded Mg−6Zn−4Sn−1Mn(ZTM641)alloy with various Al contents(0,0.5,1,2,3 and 4 wt.%)were investigated by OM,XRD,DSC,SEM,TEM and uniaxial tensile ... The microstructure and properties of the as-cast,as-homogenized and as-extruded Mg−6Zn−4Sn−1Mn(ZTM641)alloy with various Al contents(0,0.5,1,2,3 and 4 wt.%)were investigated by OM,XRD,DSC,SEM,TEM and uniaxial tensile tests.The results show that when the Al content is not higher than 0.5%,the alloys are mainly composed of α-Mg,Mg_(2)Sn,Al_(8)Mn_(5)and Mg_(7)Zn_(3)phases.When the Al content is higher than 0.5%,the alloys mainly consist ofα-Mg,Mg_(2)Sn,MgZn,Mg_(32)(Al,Zn)_(49),Al_(2)Mg_(5)Zn_(2),Al_(11)Mn_(4)and Al_(8)Mn_(5)phases.A small amount of Al(≤1%)can increase the proportion of fine dynamic recrystallized(DRXed)grains during hot-extrusion process.The roomtemperature tensile test results show that the ZTM641−1Al alloy has the best comprehensive mechanical properties,in which the ultimate tensile strength is 332 MPa,yield strength is 221 MPa and the elongation is 15%.Elevatedtemperature tensile test results at 150 and 200℃ show that ZTM641−2Al alloy has the best comprehensive mechanical properties. 展开更多
关键词 mg−Zn−sn−Mn alloy AL microstructure mechanical properties dynamic recrystallization nucleation
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Microstructure and mechanical properties of as-cast Mg-Sn-Ca alloys and effect of alloying elements 被引量:4
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作者 K.SURESH K.P.RAO +2 位作者 Y.V.R.K.PRASAD N.HORT K.U.KAINER 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第12期3604-3610,共7页
The effect of Sn, Ca, Al, Si and Zn addition on the compressive strength of cast Mg-Sn-Ca (TX) alloys was studied in the temperature range of 25-250 °C and correlated with the microstructure. The Sn to Ca mass ... The effect of Sn, Ca, Al, Si and Zn addition on the compressive strength of cast Mg-Sn-Ca (TX) alloys was studied in the temperature range of 25-250 °C and correlated with the microstructure. The Sn to Ca mass ratio up to 2.5 contributes to the formation of Mg2Ca phase at the grain boundaries and CaMgSn in the matrix, while a ratio of 3 gives only CaMgSn phase mostly in the matrix. While the compressive strength decreases with the increase in temperature, for Sn/Ca up to 2.5, a plateau occurs in 100-175 °C, which is attributed to the strengthening by Mg2Ca. However, for ratio of 3, the strength is lower and decreases more gradually. Mg-3Sn-2Ca (TX32) has the highest strength and the addition of 0.4%Al increases its strength but simultaneous addition of Si lowers the strength. Likewise, the addition of Zn improves its strength but simultaneous addition of Al slightly decreases the strength. The results are correlated with the types of intermetallic phases that form in various alloys. 展开更多
关键词 sn/Ca ratio mg-sn-Ca alloys alloying additions microstructure compressive strength
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Microstructural evolution and creep properties of Mg-4Sn alloys by addition of calcium up to 4 wt.% 被引量:2
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作者 Amir BAGHANI Hamid KHALILPOUR Seyed Mahdi MIRESMAEILI 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2020年第4期896-904,共9页
The effects of addition of calcium up to 4 wt.% on the microstructure and creep properties of Mg-4 Sn alloys were investigated by the impression creep test. Impression creep tests were performed in temperature range b... The effects of addition of calcium up to 4 wt.% on the microstructure and creep properties of Mg-4 Sn alloys were investigated by the impression creep test. Impression creep tests were performed in temperature range between 445 and 475 K under normalized stresses σ/G(where σ is the stress;G is the shear modulus) between 0.0225 and 0.035. Optical microscopy and scanning electron microscopy were used to study the microstructure of samples. It is observed that the addition of Ca more than 2 wt.% suppresses less stable Mg Sn2 phase, and instead forms more thermally stable phases of Ca-Mg-Sn and Mg2 Ca at the grain boundaries which improve the creep resistance of Mg-4 Sn alloys. According to the stress exponents(6.04<n<6.89) and activation energies(101.37 k J/mol<Q<113.8 k J/mol) which were obtained from the impression creep tests, it is concluded that the pipe diffusion climb controlled dislocation creep is the dominant creep mechanism. 展开更多
关键词 impression creep test mg-sn-Ca alloy creep mechanism microstructure
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Effects ofslip mode on microstructure evolution and compressive flow behavior of extruded dilute Mg−0.5Bi−0.5Sn−0.5Mn alloy
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作者 Zhi-yong YOU Wei-li CHENG +6 位作者 Guo-lei LIU Jian LI Li-fei WANG Hui YU Hong-xia WANG Ze-qin CUI Jin-hui WANG 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS 2024年第11期3599-3614,共16页
The influence of the slip mode on the microstructure evolution and compressive flow behavior at different strains in an extruded dilute Mg−0.5Bi−0.5Sn−0.5Mn alloy was analyzed through electron backscatter diffraction,... The influence of the slip mode on the microstructure evolution and compressive flow behavior at different strains in an extruded dilute Mg−0.5Bi−0.5Sn−0.5Mn alloy was analyzed through electron backscatter diffraction,X-ray diffraction,transmission electron microscopy,and hot compression tests.The results showed that at a low strain of 0.05,the basal<a>,pyramidal<a>and<c+a>slip modes were simultaneously activated.Nevertheless,at the middle stage of deformation(strain of 0.1,0.2 and 0.5),the<a>slip mode was difficult to be activated and<c+a>slip mode became dominant.The deformation process between strains of 0.2 and 0.5 was primarily characterized by the softening effect resulting from the simultaneous occurrence of continuous dynamic recrystallization and discontinuous dynamic recrystallization.Ultimately,at strain of 0.8,a dynamic equilibrium was established,with the flow stress remaining constant due to the interplay between the dynamic softening brought about by discontinuous dynamic recrystallization and the work-hardening effect induced by the activation of the basal<a>slip mode. 展开更多
关键词 dilute mg−Bi−sn−Mn alloy slip mode hot compression flow behavior dynamic recrystallization
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