理化检验-物理分册2024，Vol.60Issue(4)：25-30,6.DOI:10.11973/lhjy-wl202404006
基于晶体塑性理论的镍基合金高温低周疲劳寿命预测方法
High temperature low cycle fatigue life prediction method of nickel based alloy based on crystal plasticity theory
缪勇1
作者信息
- 1. 上海航空材料结构检测股份有限公司,上海 201318
- 折叠
摘要
Abstract
The high temperature tensile test and low cycle fatigue test of Inconel 718 nickel based alloy were carried out,and the fatigue crack initiation process of the alloy was analyzed by crystal plasticity finite element method.The results show that the initiation life of high temperature low cycle fatigue crack of Inconel 718 nickel based alloy decreased with the increase of total strain range.The high temperature low cycle fatigue cracks of the nickel based alloy were easy to initiate at the trigeminal grain boundaries,and there was a large cumulative plastic slip in these areas.关键词
Inconel 718镍基合金/高温低周疲劳寿命预测/微观组织/有限元模拟/疲劳指示因子Key words
Inconel 718 nickel based alloy/high temperature low cycle fatigue life prediction/microstructure/finite element simulation/fatigue indicator factor分类
矿业与冶金引用本文复制引用
缪勇..基于晶体塑性理论的镍基合金高温低周疲劳寿命预测方法[J].理化检验-物理分册,2024,60(4):25-30,6.
