Effect of brass composition and phases on stress corrosion mitigation by laser shock peening

被引：8

作者：

Lisenko, Nikita ^{[1
]}

Evans, Connor D. ^{[1
]}

Yao, Y. Lawrence ^{[1
]}

机构：

[1] Columbia Univ, Dept Mech Engn, Adv Mfg Lab, 500 West 120th St,Room 220, New York, NY 10027 USA

来源：

MANUFACTURING LETTERS | 2020年 / 23卷

基金：

美国国家科学基金会;

关键词：

Laser shock peening; Stress corrosion cracking; Microstructure; Dezincification; Brass; CRACKING; DEZINCIFICATION; ALLOYS;

D O I：

10.1016/j.mfglet.2019.11.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

While laser shock peening (LSP) is meant to mitigate stress corrosion cracking (SCC) by inducing compressive residual stress, it is also known to produce dense dislocation tangles in the treated surface. The impact of such microstructure changes on SCC resistance is material-dependent and not well-understood. In this study single-phase brass 260 and two-phase brass 280 with different zinc content were LSP treated and subjected to SCC. Besides the competing effects of compressive stress and dislocation generation, dezincification was identified as a contributor to SCC specifically in brasses. Reduction of dezincification from LSP was evaluated using energy dispersive spectroscopy (EDS). (C) 2019 Society of Manufacturing Engineers (SME). Published by Elsevier Ltd. All rights reserved.

引用

页码：5 / 8

页数：4

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