Low-cycle fatigue lifetime estimation of Ti–6Al–4V welded joints by a continuum damage mechanics model

被引：0

作者：

Hong-Yu Qi ^{[1
]}

Xiao-Lei Zheng ^{[1
]}

Xiao-Guang Yang ^{[1
]}

机构：

[1] School of Energy and Power Engineering,Beihang University

来源：

RareMetals | 2016年 / 35卷 / 04期

关键词：

Electron beam welding; Low-cycle fatigue; Life estimation; Continuum damage mechanics;

D O I：

暂无

中图分类号：

TG407 [焊接接头的力学性能及其强度计算];

学科分类号：

080201 ; 080503 ;

摘要：

The low-cycle fatigue(LCF)behavior of directionally solidified nickel-based superalloy Ti–6Al–4V was studied under bare and electron beam welding conditions at room temperature.Results show that:(1)under the same test conditions,all the joints exhibit lower LCF lifetime than Ti–6Al–4V;(2)the failure of welded structures is mainly ascribed to the welding defect.A novel lifetime prediction methodology based on continuum damage mechanics is proposed to predict the lifetime of Ti–6Al–4V and its welded joints.

引用

页码：299 / 302

页数：4

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