Analysis of softening zone on the surface of 20Mn2SiCrMo bainitic railway switch
Engineering Failure Analysis(2015)
摘要
•The fabrication processing causes softening zone existence on switch surface.•Long duration in 500–700°C in the fabrication is a direct reason for this zone.•Heating temperature affects the zone width and higher temperature means wider zone.•Heating temperature decrease and cooling rate rise could reduce the zone width.
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关键词
Bainitic railway switch,Softening zone,Tempering,Induction heating temperature
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