摘要
研究了室温Ti-1023钛合金由应变控制的低周疲劳行为。对循环应力-应变数据和应变-疲劳寿命数据进行了分析,通过双对数线性回归处理,得出了Coffin-Mason处理模型的疲劳参数。结果表明:合金总应变幅在0.6%-0.8%时,循环初期表现出轻微的循环硬化,然后循环稳定;总应变幅超过0.8%时则表现为循环软化。表明合金的循环应力响应行为取决于外加总应变幅。
Low cyclic fatigue behavior of Ti-1023 titanium alloy has been investigated under a fully reversed total strain-controlled mode. The strain-life and cyclic stress-strain data were analyzed to determine the individual strain fatigue parameters. It is found that the Ti-1023 alloy exhibited an initial slight cyclic hardening, followed by stable cycle at a total strain amplitude of 0.6%-0.8%, then cyclic softening at a total strain amplitude of above 0.8% to 3.0%. It is considered that the cyclic stress response behavior of Ti-1023 alloy depends on the total strain amplitude.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2006年第5期703-706,共4页
Rare Metal Materials and Engineering