期刊文献+

B_4C-Al中子吸收材料拉伸性能及断裂机理 被引量:4

Tensile Property and Fracture Mechanism of B_4C-Al Neutron Absorber Material
下载PDF
导出
摘要 为评价粉末冶金法制备的B4C-Al中子吸收材料的力学性能,采用静态拉伸的试验方法研究板材的室温及高温拉伸性能,并运用扫描电镜进行断口形貌观察,对复合材料的断裂机理进行讨论。研究表明:室温下,B4C质量分数为30%的B4C-Al复合板材的屈服强度为200 MPa,抗拉强度为250 MPa,断后伸长率为2.5%;在实验范围内,随着温度的升高,材料的抗拉强度和屈服强度下降,并趋于一致,材料的断后伸长率增加并达到最大值。复合材料的断裂宏观表现为脆性断裂,断裂是由基体内微孔隙成核、聚集和基体与增强相的界面脱粘断裂的共同作用造成的。 To get the mechanical properties of B4C-Al plate made by powder metallurgy , B4C-Al plate was tested by static tension ,fracture appearance was investigated by scanning electron microscope (SEM ) ,and the mechanism of fracture was discussed . The results show that at room temperature the yield strength ,the tensile strength and elongation of the composite with 30% B4C are 200 MPa ,250 MPa and 2.5% ,respec-tively .When the temperature of tensile test is elevated ,the tensile strength and the yield strength of composites decrease and approach to one value ,and the elongation increases and reaches maximum value .Fracture behaves in macro-scope as brittle frac-ture and is caused by the appearance and accumulation of hole in matrix and the separa-tion of reinforced particles and matrix .
出处 《原子能科学技术》 EI CAS CSCD 北大核心 2014年第5期883-887,共5页 Atomic Energy Science and Technology
关键词 中子吸收材料 粉末冶金法 复合材料 拉伸性能 断裂机理 neutron absorber material powder metallurgy composite tensile proper-ty fracture mechanism
  • 相关文献

参考文献11

二级参考文献91

共引文献77

同被引文献44

  • 1赵常利,张小农.粉末冶金法制备Ti_p/Mg复合材料组织及性能的研究[J].上海金属,2006,28(2):35-38. 被引量:4
  • 2Electric Power Research Institute. Handbook of neutron absorber materials for spent nuclear fuel transportation and storage applications 2006 edition E R 1. USA, 2006.
  • 3Westing House. API000 standard combined license technical report-spent fuel storage racks criticality analysis[R]. USA, 2005.
  • 4Kok K D. Nuclear Engineering Handbook[ M]. New York: CRC Press, 2009: 152.
  • 5Gxjeu M, Suquet P. Effective properties of porous ideally plastic or viscoplastic materials containing rigid particles [ J ]. Journal of the Mechanics and Physics of Solids, 1997, 45 (5) : 873-902.
  • 6Vincent P G, Monerie Y, Suquet P. Porous materials with two populations of voids under in- ternal pressureII: instantaneous constitutive relations [ J ]. Internationa[Journal of Solids and Structures, 2009, 46(3/4): 480-506.
  • 7Vincent P G, Monerie Y, Suquet P. Porous materials with two populations of voids under in- ternal pressure--II: growth and coalescence of voids [ J]. Internationa[Journal of Solids and Structures, 2009, 46(3/4): 507-526.
  • 8He Z, Caratini G, Dormieux L, Kondo D. Homogenization of anisotropic elastoplastic behav- iors of a porous polycrystal with interface effects [ J]. Internationa[Journal for Numerical and Analytical Methods in Geomechanics, 2013, 37(18) : 3213-3236.
  • 9He Z, Dormieux L, Lemarchand E, Kondo D. Cohesive Mohr-Coulomb interface effects on the strength criterion of materials with granular-based microstructure[ JJ. European Journal of Mechanics--A/Solids, 2013, 42: 430-440.
  • 10Shen W Q, Kondo D, Dormieux L, Shao J F. A closed-form three scale model for ductile rocks with a plastically compressible porous matrix [J]. Mechanics of Materials, 2013, 59: 73-86.

引证文献4

二级引证文献4

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部