梁晓阳,闫献国,郭宏,冯志阳,郑召礼

• 1:太原科技大学机械工程学院

摘要(Abstract)：

为提高W6Mo5Cr4V2高速钢的耐磨性,探究了进行深冷工艺时,在不同降温速率的影响下,磨损性能的变化规律。首先对W6Mo5Cr4V2高速钢进行传统的淬火处理,之后加入不同降温速率的深冷处理,最后进行回火处理。采用磨损率对其磨损性能进行了测定,探究耐磨性和硬度的关系,观察磨痕的微观形貌,并对微观组织进行SEM测试,从而分析耐磨性提高的原因。结果表明,未深冷处理试样以黏着磨损为主,深冷后的试样以氧化磨损为主;耐磨性随降温速率的增加先增加,在降温速率为2℃/min时耐磨性最好,相比于未深冷处理试样约提高1.5倍,之后随降温速率的进一步增加而降低。分析认为耐磨性提高是由于深冷处理极大地促进了残留奥氏体向马氏体的转变,促进了细小弥散碳化物的析出,从而提高了硬度,并增强了基体的抗磨损性能。

关键词(KeyWords)： 高速钢;深冷处理;降温速率;耐磨性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51275333)

作者(Author): 梁晓阳,闫献国,郭宏,冯志阳,郑召礼

DOI: 10.13289/j.issn.1009-6264.2016.11.014

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