摘要
对镍基单晶高温合金ＣＭＳＸ－３在９００℃、较高应力幅下进行蠕变－疲劳交互作用试验。结果表明，循环蠕变的保持时间显著地影响材料的断裂寿命和断裂应变；应变量与总保持时间有对应关系。可用γ强化的单晶高温合金蠕变－疲劳交互作用机制对此作出解释。
The creep and creep-fatigue tests with holding times at upper stress amplitute arecarried out at temperature 9 00℃ on single crystal superalloy CMSX-3 with nickle base, Theexperimental results show that the incorporation of hold time at cyclic creep test has strong effecton fracture lifetime and strain of tested samples. The resulted strain value is proportional to thetotal length of hold time. This can be related to creep-fatigue interaction mechanism atdeformation process in γ' hardened single crystal superalloy.
出处
《大连理工大学学报》
CAS
CSCD
北大核心
1995年第5期654-657,共4页
Journal of Dalian University of Technology
基金
斯洛伐克合作项目
