摘要
研究了TC4合金应力松弛行为的特征和工艺因素的影响。结果表明,TC4合金应力松弛行为可以分为两个阶段:第一阶段,应力松弛非常快,第二阶段应力松弛缓慢,但长时间应力松弛后剩余应力趋向于一极限值;应力松弛行为可以用应力松弛极限和应力松弛速率两个参量进行表征;温度升高时,松弛速率加快,应力松弛极限降低;同一温度不同初应力作用的应力松弛,应力松弛极限相同。
The stress relaxation behavior characters of TC4 alloy and influence of processing factors were studied. The results showed that the stress relaxed very fast at the first stage, while slowly at the second stage, and the residual stress approached a limit after a long relaxation time. Stress relaxation was characterized with stress relaxation limit and stress relaxation rate. The higher temperature resulted in higher stress relaxation rate and lower relaxation limit. Different initial stress gave the same relaxation limit at same temperature.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2005年第4期38-41,共4页
Journal of Materials Engineering
关键词
TC4合金
应力松弛
应力松弛极限
应力松弛速率
温度
初应力
TC4 alloy
stress relaxation
stress relaxation limit
stress relaxation rate
temperature
initial stress
