王红星,王章忠,胡谦,薛亚军,秦超,沈伽宁,崔梦,乐豹

• 1:江苏省先进结构材料与应用技术重点实验室
• 2:南京工程学院材料工程学院
• 3:南京中盛铁路车辆配件有限公司

摘要(Abstract)：

利用光学显微镜、扫描电镜研究了淬火温度(850~1050℃)+600℃回火对NiCrMoV钢组织的影响及其在不同载荷、滑动速度下的耐磨性能。结果表明:热处理后室温组织为铁素体和回火索氏体;硬度随淬火加热温度升高呈先增加后降低的趋势,900℃时达到最大,为41.2 HRC;保持滑动速度30 mm/s,磨损量随载荷增加呈先降后增,摩擦因数随载荷增加呈先减小后增大,900℃淬火样最小;固定载荷100 N,磨损量和摩擦因数随滑动速度增加呈先增后降低,淬火温度950℃时最小;当载荷200 N时,摩擦因数差异最小,在0.44~0.46内波动。低载荷或低速以磨粒磨损为主,高载荷或高速以磨损为主,粘着和磨粒磨损为辅的混合机制。

关键词(KeyWords)： NiCrMoV钢;热处理;微观组织;耐磨性能

Abstract:

Keywords:

基金项目(Foundation): 江苏省高校自然科学研究重大项目(15KJA430004);; 江苏省重点研发计划(产业前瞻与共性关键技术)(BE2015031);; 江苏省先进结构材料与应用技术重点实验室开放基金(ASMA201506);; 江苏省高等学校大学生创新创业训练计划项目(201611276002Z);; 江苏高校优秀科技创新团队

作者(Author): 王红星,王章忠,胡谦,薛亚军,秦超,沈伽宁,崔梦,乐豹

DOI: 10.13289/j.issn.1009-6264.2017-0123

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