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首页> 外文期刊>International Journal of Electrochemical Science >Investigation on microstructure, surface and corrosion characteristics of heat treated AISI 420 martensitic stainless steel laser welds in simulated body fluid (SBF)
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Investigation on microstructure, surface and corrosion characteristics of heat treated AISI 420 martensitic stainless steel laser welds in simulated body fluid (SBF)

机译：模拟体液（SBF）中经过热处理的AISI 420马氏体不锈钢激光焊接的组织，表面和腐蚀特性的研究

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摘要

Aim of the present study was to investigate metallurgical properties of pre- and post-weld heat treatedand non-heat treated AISI 420 martensitic stainless steel joined using CO2 laser welding method. Inaddition, heat treated laser welded and base metal samples were immersed in Simulated Body Fluid(SBF) for 1, 3, 7, 14, 21 and 28 days, and apatite formations on base metal and on welding seamsurface were studied. Corrosion properties on all samples immersed in SBF were determined based onweight loss method. Due to heat treatment process, corrosion sensitivity occurred by producingcarbides, such as Cr23C6, M23C6, and decreasing local chromium content in the weld zone. In addition,weld heat input affected corrosion resistance.
机译：本研究的目的是研究采用CO2激光焊接方法焊接的热处理前后焊缝和未热处理AISI 420马氏体不锈钢的冶金性能。此外，将经过热处理的激光焊接和贱金属样品浸入模拟体液（SBF）中1、3、7、14、21和28天，并研究贱金属和焊缝表面上的磷灰石形成。根据失重法测定所有浸入SBF的样品的腐蚀性能。由于进行了热处理，因此产生了诸如Cr23C6，M23C6的碳化物并降低了焊接区的局部铬含量，从而产生了腐蚀敏感性。另外，焊接热输入影响耐腐蚀性。

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