王泽宁,崔洪芝,张国松,王伟,孙金全,程贵勤

• 1:山东科技大学材料科学与工程学院
• 2:青州海盾液压机械有限公司

摘要(Abstract)：

研究了滚珠丝杠用GCr15钢表面感应淬火后的组织和磨损机理。采用SEM、显微硬度计和XRD分别观察和检测了表面感应淬火试样的微观组织、断口形态、从表层到芯部的显微硬度分布以及淬火相变硬化区的物相,分别在低、中、高磨损载荷下,对试样进行往复式线性干摩擦磨损测试,分析研究了摩擦系数、磨损表面和磨屑形貌。结果表明:相变硬化区主要由隐晶马氏体、残留奥氏体及弥散分布的粒状碳化物组成;表层到芯部的断口形态呈明显变化;随着载荷增加,摩擦系数降低;低载荷下磨损表面呈现轻微划痕和少量脱离的碳化物颗粒,发生轻微磨粒磨损;中载荷下主要发生磨粒磨损和轻微剥层磨损;高载荷下磨损表面有严重犁沟,磨屑呈大片状,主要发生剧烈磨粒磨损和剥层磨损。

关键词(KeyWords)： GCr15钢;表面感应淬火;马氏体;磨损机理;摩擦系数

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51272141);; 山东省“泰山学者”计划(ts20110828)

作者(Author): 王泽宁,崔洪芝,张国松,王伟,孙金全,程贵勤

DOI: 10.13289/j.issn.1009-6264.2015.11.031

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