Microstructural and electrochemical characterization of a thin-section dissimilar stainless steel weld joint

被引：15
作者：
Srinivasana, P. Bala [1 ]
Kumar, M. P. Satish [2 ]
机构：
[1] GKSS Forschungszentrum Geesthacht GmbH, Mat Res Inst, D-21502 Geesthacht, Germany
[2] Mabani Steel, Ras Al Khaymah, U Arab Emirates
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2009年 / 115卷 / 01期
关键词：
Dissimilar weld; Stainless steels; Microstructure; Hardness; Corrosion behaviour; CORROSION BEHAVIOR; FUSION BOUNDARY; METALS;
D O I：
10.1016/j.matchemphys.2008.11.044
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A dissimilar weld joint consisting of an austenitic stainless steel (ASS) and a martensitic stainless steel (MSS) was obtained under optimized welding conditions by autogenous gas tungsten arc welding technique. The weld metal was found to be dual-phased, and was constituted with an austenite matrix containing interdendritic ferrite of about 3-8 EFN, with over-matching mechanical properties. Electrochemical behaviour assessment of the composite zone comprising the weld metal, HAZ of both ASS and MSS showed different general corrosion behaviour in neutral and acidic chloride solutions. However, in both the electrolytes, the pitting susceptibility of this region was the highest, and the MSSHAZ of this composite zone was the observed to be more vulnerable to localized damage. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：179 / 184
页数：6
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