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退火对冷拉拔Al-0.7Fe-0.2Cu合金组织性能的影响 被引量:5

Effect of Annealing on Microstructure and Mechanical Properties of Cold Drawn Al-0.7Fe-0.2Cu Alloy
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摘要 运用光学显微镜、扫描电镜和透射电镜研究了冷拉拔铝合金Al-0.7Fe-0.2Cu在不同退火处理制度下的微观组织结构演变,并分析了其对电导率和力学性能的影响。结果表明:300℃退火,初生相Al(Fe,Cu)中Cu元素部分回溶于基体,500℃退火,Cu元素几乎完全回溶于基体;冷拉拔Al-0.7Fe-0.2Cu丝材再结晶温度为300~350℃;450℃长时间退火后,再结晶晶粒长大不明显,但有极少量的晶粒出现异常长大现象,这主要是因为Al(Fe,Cu)相分布不均匀对晶粒长大的影响;其电导率在250℃×2h条件下退火达到最大值;超过350℃长时间退火其抗拉强度趋于稳定,伸长率降低。冷拉拔合金在350℃×2h退火处理制度下,拥有最优异的导电性能和力学性能。 The microstructure evolution of cold-drawn aluminum alloy A1-0.7Fe-0.2Cu under different annealing conditions was investigated with OM, SEM and TEM. Electrical conductivity and tensile testing of annealed specimens were performed to examine the effect of annealing condition and microstmcture on the conductivity and mechanical properties. The results show that partial Cu element in primary phase A1 (Fe, Cu) has dissolved in A1 matrix after annealing at 300 ℃, and nearly all the Cu element dissolves in A1 matrix when the alloy is treated at 500 ℃. The recrystallization temperature of the cold drawn A1-0.7Fe-0.2Cu wire is 300-350 ℃. Recrystallization grain growth is not obvious after annealing at 450℃ for long time, but there is an abnormal growth of a little amount of grains, the reason is that the A1 (Fe, Cu) phase are not uniformly distributed the grain boundary and the particles can prevent A1 grain from growing up. The electrical conductivity attains a maximum at annealing condition of about 250℃ ×2 h. No change in tensile strength is observed with further annealing above 350 ℃, and meantime, the elongation decreases. The cold drawn A1-0.7Fe-0.2Cu wire reaches the best electrical conductivity and tensile properties after annealing at 350℃ for 2 h.
出处 《热加工工艺》 CSCD 北大核心 2012年第22期172-176,179,共6页 Hot Working Technology
基金 国家863高新技术项目(2003AA332070) 长沙市科技成果产业化资金专项(K0902002-11)
关键词 Al-0.7Fe-0.2Cu合金 退火 显微组织 电导率 力学性能 A1-0.7Fe-0.2Cu alloy annealing microstructure electrical conductivity mechanical properties
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  • 1Sedat K_arabay. ACSS/TW aerial high-temperature bare condnctors as a remedy for increasing transmission line capacity and determination of processing parameters for manufacturing [J]. Materials and Design,2009,30(3) :816-825.
  • 2Wu Hua-yuan, Zhen Yu-liang. Effect of Zr addition on properties of A1-Mg-Si aluminumalloy used for all aluminum alloy conductor [J]. Materials and Design,2011,32(8-9)~4195- 4200.
  • 3Ito K, Musick R, Lucke K. The influence of iron content and annealing temperature on the RecrystaUization textures oflaigh- puritaluminium-ironalloy [J]. Acta. Metallurgiea, 1983,31 (12): 2137-2149.
  • 4Roy R K, Kar S, Das K, et al. A study of precipitation and recrystallization behavior of aluminium alloy AA1235 [J]. Mater,2006,41 (4) : 1039-1045.
  • 5Poorganji B, Sepehrband P, Jin H, et ol. Effect of cold work and non-isothermal annealing on the Recrystallization behavior and texture evolution of a precipitation-hardenable aluminum alloy[J]. Scripta Materialia,2010,63(12): 1157-1160.
  • 6Mohammad T, Masjuki H H. Comparative analysis of tensile and impact-toughness behavior of cold-worked and annealed 7075aluminum alloy [J]. International Journal of Impact Engineering, 2010,37(9): 425-432.
  • 7Li J, Liu W C, Yuan H, et al. Comparison of earing behavior between continuous cast and direct chill cast AA5182 aluminum alloy during cold rolling and annealing[J]. Journal of Materials Processing Technology, 2010,210(14) : 2007 -2015.
  • 8覃继宁,张荻,张国定,J.C.Lee.6061铝合金ECAP变形后退火组织稳定性和织构变化[J].中国有色金属学报,2005,15(4):519-523. 被引量:7
  • 9唐建国,张新明,徐敏,欧军.3104铝合金热粗轧板的织构梯度及其对热压缩变形后退火织构演变的影响[J].中国有色金属学报,2010,20(10):1932-1940. 被引量:8
  • 10Lin S P, Nie Z R, Huang H, Li B L . Annealing behavior of a modified 5083 aluminum alloy [J]. Materials and Design, 2010,31(3): 1607-1612.

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