Surface treatment of 0Cr19Ni9 stainless steel SMAW joint by plasma melting |
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作者姓名: | 罗伟 栾景飞 严密 |
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作者单位: | CollegeofMaterialsandChemicalEngineering,ghejiangUniversity,Hangzhou310027,China |
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摘 要: | Micro-plasma are surface melting of 0Crl9Ni9 shielded metal are welding joint with a micro-plasma are welder produced a thin surface melted layer with a refined microtructure. The surface treatment changed the anodie 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 resis-tance to corrosion compared with the as-received parent material while for the micro-plasma are 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 mierostrueture, decreases its mierosegregation, and inhibits the precipitation of chromium carbides at the grain boundaries.
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关 键 词: | 不锈钢 0Crl9Ni9钢 表面处理 等离子体 气体保护金属极电弧焊 |
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