Prediction of Cold Dwell-Fatigue Crack Growth of Titanium Alloys

被引：19

作者：

Wang, Ke ^{[1
]}

Wang, Fang ^{[2
]}

Cui, Wei-Cheng ^{[2
]}

Tian, A. -Li ^{[3
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Naval Architecture & Ocean Engn, Shanghai 200030, Peoples R China

[2] Shanghai Ocean Univ, Hadal Sci & Technol Res Ctr, Shanghai Engn Res Ctr Hadal Sci & Technol, Shanghai 201306, Peoples R China

[3] Jiangsu Univ Sci & Technol, Sch Naval Architecture & Ocean Engn, Zhenjiang 212003, Peoples R China

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2015年 / 28卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Titanium alloy; Dwell-fatigue; Fatigue; Crack growth; SENSITIVE FATIGUE; THRESHOLD; TIME; MICROSTRUCTURE; MODEL; PROPAGATION; CREEP;

D O I：

10.1007/s40195-015-0240-x

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The dwell effect of the material can reduce the fatigue lives of titanium alloys at room temperature. A unified fatigue life prediction method developed by the authors' group is modified in this paper to predict dwell-fatigue crack growth taking into account the effects of dwell time and maximum stress. The modified model can be successfully used to predict the crack growth rate and calculate the fatigue life of different titanium alloys under pure fatigue and dwell-fatigue conditions. It is validated by comparing prediction results with the experimental data of several titanium alloys with different microstructures, dwell time, hydrogen contents, stress ratios and stress levels.

引用

页码：619 / 627

页数：9

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