形变铝合金的形变硬化特性  

DEFORMATION HARDENING BEHAVIORS OF DEFORMED ALUMINUM ALLOYS

作　　者：刘俊[1] 魏齐龙[1] 毕雅敏[1] 

机构地区：[1]中国工程物理研究院机械制造工艺研究所,绵阳621900

出　　处：《理化检验（物理分册）》2008年第1期4-6,共3页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：采用单轴拉伸方法测试了LD10,LF6,LC4和LY12几种形变铝合金的形变硬化指数,分析了合金的硬化率和硬化指数与应变的关系。结果表明,这几种形变铝合金的硬化指数在不同的应变区域具有不同的变化趋势。在低应变区域,形变硬化指数呈上升趋势,在高应变区域,形变硬化指数趋于平稳。四种形变铝合金中,LF6的硬化指数最高,LY12,LD10次之,LC4最低。形变铝合金的硬化率随着应变的增加不断降低。The strain hardening exponents of four kinds of deformed aluminums alloy （LD10, LF6, LC4 and LY12） were measured by uniaxial tensile testing, and the relations of hardening exponent and hardening rate with strain were analyzed. It was found that the hardening exponents of the four kinds of deformed aluminum alloy had various changing tendency in different strain sections, rising in low strain section and stabilizing in high strain section. Of which, the hardening exponent of LF6 was highest, and that of LC4 was lowest, and that of LY12 and LD10 were in middl; The hardening rates declined with increasing strain.

关 键 词：形变铝合金 应变硬化指数 硬化率 

分 类 号：TB301[一般工业技术—材料科学与工程]