Low Cycle Fatigue Behaviour of Al-Mg-Si Alloy AA6061 Processed by Equal Channel Angular Pressing

摘要：

The low cycle fatigue(LCF)behaviour of aluminiummagnesium-silicon alloy AA6061 processed by equal channel angular pressing(ECAP)was studied. Solutionized specimens of the alloy were subjected to one,two and three passes of ECAP at room temperature using route Be.Compared to the values of the solutionized material an overall increase in yield strength and ultimate tensile strength with decrease in ％ elongation is observed for the ECAP processed material.While the solutionized material exhibits cyclic hardening at all strain levels,the ECAP processed material shows different behaviour depending on the number of passes -stable response/cyclic softening/ softening followed by hardening.The ECAP processed material after three passes exhibit superior LCF lives at low strains presumably due to higher strength and large refinement of grains.

关键词： Equal channel angular pressing Low cycle fatigue Aluminium alloy.

作者: Venkatesh, C.V. Ganesh Sundara Raman,S. Uday Chakkingal

作者单位: Department of Metallurgical and Materials Engineering,Indian Institute of Technology Madras,Chennai-600 036,India

会议类型: 国际会议

会议名称: 2012 2nd International Conference on Advanced Material Research(2012 第二届先进材料研究国际会议 ICAMR2012)

会议地点: 成都

会议语种:英文

页码: 97-101

在线出版日期: 2012-01-07（万方平台首次上网日期，不代表论文的发表时间）