Enhancement of abrasion and corrosion resistance of duplex stainless steel by laser shock peening

被引：153

作者：

Lim, Hyuntaeck ^{[1
]}

Kim, Pilkyu ^{[1
]}

Jeong, Hoemin ^{[1
]}

Jeong, Sungho ^{[1
]}

机构：

[1] Gwangju Inst Sci & Technol, Sch Mechatron, Kwangju 500712, South Korea

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2012年 / 212卷 / 06期

关键词：

Duplex stainless steel; Laser shock peening; Residual stress; Hardness; Wear; Corrosion; SEAWATER DESALINATION; AUSTENITIC STEEL; FATIGUE BEHAVIOR; IMPROVEMENT; INITIATION; HARDNESS; ALLOYS;

D O I：

10.1016/j.jmatprotec.2012.01.023

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The results for laser shock peening of duplex stainless steel (22% Chromium-5% Nickel) using a pulsed Nd:YAG laser (wavelength =532 nm, pulse width = 8 us) for the application to high-capacity pumps for reverse-osmosis type seawater desalination plants are reported. By properly selecting the process parameters such as laser intensity of 10 GW/cm(2), laser pulse density of 75 pulse/mm(2), and 100 mu m thick aluminum foil as a protective coating layer, wear volume and corrosion rate of duplex stainless steel could be reduced by 39% and 74.2%, respectively.The number and size of corrosion pits produced on wear track during copper accelerated acetic acid salt spray test decreased approximately by half as a result of laser shock peening. It is shown that laser shock peening is a practical option to improve abrasion and corrosion properties of a seawater desalination pump parts. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：1347 / 1354

页数：8

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