Atom probe tomography analysis of hydrogen distribution in laser peened Ti6Al4V alloy to control hydrogen embrittlement

被引：11

作者：

Kumar, G. Ranjith ^{[1
]}

Muralidharan, Anirudh ^{[1
]}

Rajyalakshmi, G. ^{[1
]}

Swaroop, S. ^{[2
]}

机构：

[1] Vellore Inst Technol, Sch Mech Engn, Vellore 632014, Tamil Nadu, India

[2] Vellore Inst Technol, Sch Adv Sci, Vellore 632014, Tamil Nadu, India

来源：

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY | 2021年 / 114卷 / 5-6期

关键词：

Laser peening; Hydrogen charging; SSRT; Atom probe tomography; RESIDUAL-STRESS; TI-6AL-4V ALLOY; SURFACE MODIFICATION; STAINLESS-STEEL; TITANIUM-ALLOYS; MICROSTRUCTURE; SUSCEPTIBILITY; SUPPRESSION; DESORPTION; RESISTANCE;

D O I：

10.1007/s00170-021-06951-5

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Hydrogen embrittlement of Ti6Al4V alloy was investigated under electrochemical cathodic hydrogen charging. Advanced surface treatment and material characterisation, laser shock peening (LSP) or laser peening (LP), atom probe tomography, slow strain rate tensile (SSRT) test, and XRD residual stress are employed for analysis. Results obtained exposed the opportunity to implement surface treatment for controlling hydrogen embrittlement. Induced grain refinement and compressive residual stress restrict the hydrogen uptake in Ti6Al4Valloy. Furthermore, APT results gave wt. % of TiH (titanium hydride) in laser peened hydrogen charged and untreated hydrogen-charged specimens. Thus, it is concluded that compressive stress induced by laser peening process controlled uptake of hydrogen by Ti6Al4V alloy.

引用

页码：1395 / 1408

页数：14

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