摘要
在323,353和373K温度下,对63Sn37Pb钎料合金分别进行单轴应变控制的系统循环试验,揭示和分析循环应变率、应变幅值、加载波形、保持时间、平均应变及其历史对材料高温循环特性的影响以及应力保持时间及其历史对高温蠕变效应的影响。研究表明,无论是单轴应变循环特性还是蠕变效应不但依赖于当前温度和加载状态,而且依赖于其加载历史。
A series of systematic experiments on the cyclic properties of 63Sn37Pb solder alloy subjected to uniaxial cyclic strain are carried out at the temperature of 323, 353 and 373K. The effects of cyclic strain rate, strain amplitude, loading waveform shape, dwell time, mean strain and their histories on the cyclic deformation behavior of 63Sn37Pb solder alloy are investigated, and the influences of stress dwell time and their histories on the creep deformation behavior are also analyzed. It is shown that either uniaxial cyclic property under cyclic strain or creep under stress dwell time depends not only on the current temperature and loading state, but also on the previous loading history.
出处
《有色金属》
CSCD
北大核心
2008年第3期5-9,共5页
Nonferrous Metals
基金
国家自然科学基金资助项目(10372086)
