A study of fatigue damage evolution on pulsed Nd: YAG Ti6Al4V laser welded joints

Jing Liu; Xiao Long Gao; Lin Jie Zhang; Jian Xun Zhang

doi:10.1016/j.engfracmech.2014.01.005

A study of fatigue damage evolution on pulsed Nd: YAG Ti6Al4V laser welded joints

Jing Liu
, Xiao Long Gao
, Lin Jie Zhang
, Jian Xun Zhang

School of Materials Science and Engineering

Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

The influence of the large microstructure gradient the fatigue damage behaviour of laser beam welded Ti6Al4V was investigated. The experimental results showed that the damage evolution of fatigue residual strength in the LBW joint was higher than that in the base metal (BM) sample, and the fatigue crack growth resistance of the fusion zone (FZ) in the LBW joint was greater than that of the BM. Compared with BM specimens, the heterogeneous micro-plastic deformation was easier to obtain in the LBW joint under fatigue load due to high large microstructure gradient, which promotes crack initiation in the LBW welded joint.

Original language	English
Pages (from-to)	84-93
Number of pages	10
Journal	Engineering Fracture Mechanics
Volume	117
DOIs	https://doi.org/10.1016/j.engfracmech.2014.01.005
State	Published - Feb 2014

Keywords

Fatigue damage
Microstructure gradient
Pulsed Nd:YAG laser
Ti6Al4V titanium alloy

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10.1016/j.engfracmech.2014.01.005

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title = "A study of fatigue damage evolution on pulsed Nd: YAG Ti6Al4V laser welded joints",

abstract = "The influence of the large microstructure gradient the fatigue damage behaviour of laser beam welded Ti6Al4V was investigated. The experimental results showed that the damage evolution of fatigue residual strength in the LBW joint was higher than that in the base metal (BM) sample, and the fatigue crack growth resistance of the fusion zone (FZ) in the LBW joint was greater than that of the BM. Compared with BM specimens, the heterogeneous micro-plastic deformation was easier to obtain in the LBW joint under fatigue load due to high large microstructure gradient, which promotes crack initiation in the LBW welded joint.",

keywords = "Fatigue damage, Microstructure gradient, Pulsed Nd:YAG laser, Ti6Al4V titanium alloy",

author = "Jing Liu and Gao, \{Xiao Long\} and Zhang, \{Lin Jie\} and Zhang, \{Jian Xun\}",

year = "2014",

month = feb,

doi = "10.1016/j.engfracmech.2014.01.005",

language = "英语",

volume = "117",

pages = "84--93",

journal = "Engineering Fracture Mechanics",

issn = "0013-7944",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - A study of fatigue damage evolution on pulsed Nd

T2 - YAG Ti6Al4V laser welded joints

AU - Liu, Jing

AU - Gao, Xiao Long

AU - Zhang, Lin Jie

AU - Zhang, Jian Xun

PY - 2014/2

Y1 - 2014/2

N2 - The influence of the large microstructure gradient the fatigue damage behaviour of laser beam welded Ti6Al4V was investigated. The experimental results showed that the damage evolution of fatigue residual strength in the LBW joint was higher than that in the base metal (BM) sample, and the fatigue crack growth resistance of the fusion zone (FZ) in the LBW joint was greater than that of the BM. Compared with BM specimens, the heterogeneous micro-plastic deformation was easier to obtain in the LBW joint under fatigue load due to high large microstructure gradient, which promotes crack initiation in the LBW welded joint.

AB - The influence of the large microstructure gradient the fatigue damage behaviour of laser beam welded Ti6Al4V was investigated. The experimental results showed that the damage evolution of fatigue residual strength in the LBW joint was higher than that in the base metal (BM) sample, and the fatigue crack growth resistance of the fusion zone (FZ) in the LBW joint was greater than that of the BM. Compared with BM specimens, the heterogeneous micro-plastic deformation was easier to obtain in the LBW joint under fatigue load due to high large microstructure gradient, which promotes crack initiation in the LBW welded joint.

KW - Fatigue damage

KW - Microstructure gradient

KW - Pulsed Nd:YAG laser

KW - Ti6Al4V titanium alloy

UR - https://www.scopus.com/pages/publications/84897631390

U2 - 10.1016/j.engfracmech.2014.01.005

DO - 10.1016/j.engfracmech.2014.01.005

M3 - 文章

AN - SCOPUS:84897631390

SN - 0013-7944

VL - 117

SP - 84

EP - 93

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

ER -

A study of fatigue damage evolution on pulsed Nd: YAG Ti6Al4V laser welded joints

Abstract

Keywords

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