The effect of microstructure on very high cycle fatigue properties in Ti-6Al-4V

被引：71
|
作者：
Oguma, H. [1 ]
Nakamura, T. [1 ]
机构：
[1] Hokkaido Univ, Div Mech & Space Engn, Sapporo, Hokkaido 0608628, Japan
来源：
SCRIPTA MATERIALIA | 2010年 / 63卷 / 01期
关键词：
High cycle fatigue; Titanium; Microstructure; Sub-surface fracture; FAILURE;
D O I：
10.1016/j.scriptamat.2010.02.043
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Uniaxial tension fatigue tests were conducted on a Ti-6A1-4V alloy that underwent different heat treatments to reveal the effect of microstructures on the very high cycle fatigue properties. The size dependency of the threshold stress intensity factor range is indicated for the sub-surface crack, and a possible mechanism is presented by which sub-surface fractures occur at lower stress levels in the very high cycle regime than do surface-initiated fractures. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：32 / 34
页数：3
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