A simple model to account for the role of microtexture on fatigue and dwell fatigue lifetimes of titanium alloys

被引：51
作者：
Pilchak, Adam L. [1 ]
机构：
[1] AFRLIRXCM, Mat & Mfg Directorate, Air Force Res Lab, Wright Patterson AFB, OH 45433 USA
来源：
SCRIPTA MATERIALIA | 2014年 / 74卷
关键词：
Titanium; Fatigue; Dwell fatigue; Microtexture; Crack growth; ALPHA-TITANIUM; CRACK-GROWTH; ORIENTATION;
D O I：
10.1016/j.scriptamat.2013.10.024
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A deterministic model to account for the effect of initial crack size, microtextured region size and aspect ratio on the mean cyclic and dwell fatigue lifetimes of titanium alloys is described. The model also quantifies variability in lifetime from sample to sample due to differences in the position of subsurface crack initiation. The results indicate that dwell fatigue life and cyclic fatigue life depend most on microtexture region size and initial crack size, respectively. Published by Elsevier Ltd. on behalf of Acta Materialia Inc.
引用
收藏
页码：68 / 71
页数：4
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