OALib Journal期刊
ISSN: 2333-9721
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4Cr3Mo2NiV铸造热锻模具钢的高温磨损机理
, PP. 1116-1120
Keywords: 铸钢,热锻模,高温磨损
Abstract:
研究了铸造热锻模具钢4Cr3Mo2NiV从室温到600℃的磨损行为,采用SEM,XRD和EPMA等对试样磨损表面和磨屑的形貌、成分和结构进行了分析,探讨了铸造热锻模具钢的高温磨损机理。结果表明铸造热锻模具钢的高温磨损机理是氧化磨损和疲劳剥层磨损。磨损过程中氧化和疲劳剥层交替进行,使摩擦系数大幅度波动。高温磨损形成的氧化物主要是Fe2O3和Fe3O4,氧化磨损使磨损率降低;疲劳剥层使磨损率增加,磨屑呈脆性块状。
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