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Received: 2001-01-21

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Journal of Zhejiang University SCIENCE A 2002 Vol.3 No.3 P.272~277

http://doi.org/10.1631/jzus.2002.0272


Surface treatment of 0Cr19Ni9 stainless steel SMAW joint by plasma melting


Author(s):  LUO Wei, LUAN Jing-fei, YAN Mi

Affiliation(s):  College of Materials and Chemical Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s): 

Key Words:  Surface melting, Stainless steels, Plasma arc, Welding joint


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LUO Wei, LUAN Jing-fei, YAN Mi. Surface treatment of 0Cr19Ni9 stainless steel SMAW joint by plasma melting[J]. Journal of Zhejiang University Science A, 2002, 3(3): 272~277.

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author="LUO Wei, LUAN Jing-fei, YAN Mi",
journal="Journal of Zhejiang University Science A",
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pages="272~277",
year="2002",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2002.0272"
}

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%T Surface treatment of 0Cr19Ni9 stainless steel SMAW joint by plasma melting
%A LUO Wei
%A LUAN Jing-fei
%A YAN Mi
%J Journal of Zhejiang University SCIENCE A
%V 3
%N 3
%P 272~277
%@ 1869-1951
%D 2002
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2002.0272

TY - JOUR
T1 - Surface treatment of 0Cr19Ni9 stainless steel SMAW joint by plasma melting
A1 - LUO Wei
A1 - LUAN Jing-fei
A1 - YAN Mi
J0 - Journal of Zhejiang University Science A
VL - 3
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SP - 272
EP - 277
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2002.0272


Abstract: 
Micro-plasma arc surface melting of 0Cr19Ni9 shielded metal arc welding joint with a micro-plasma arc welder produced a thin surface melted layer with a refined microstructure. The surface treatment changed the anodic polarization behavior in 0.5 mol/L H2SO4 solution. The polarization tests showed that for the as-welded joint both the heat-affected zone and the weld metal decreased in resistance to corrosion compared with the as-Received parent material while for the micro-plasma arc surface melted joint the corrosion resistance increased significantly. This increase in corrosion resistance is attributed to the rapid solidification of the melted layer. Rapid solidification of the melted layer refines its microstructure, decreases its microsegregation, and inhibits the precipitation of chromium carbides at the grain boundaries.received parent material while for the micro-plasma arc surface melted joint the corrosion resistance increased significantly. This increase in corrosion resistance is attributed to the rapid solidification of the melted layer. Rapid solidification of the melted layer refines its microstructure, decreases its microsegregation, and inhibits the precipitation of chromium carbides at the grain boundaries.

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Reference

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