铝硅镀层结构对22MnB5热冲压钢高温摩擦系数的影响  

The effect of Al‑Si coating structure on the high temperature friction coefficient of 22MnB5 hot stamping steel

作　　者：陈新宇 孙正启 周澍 杨达朋 戚宇彤 易红亮[1,2] CHEN Xinyu;SUN Zhengqi;ZHOU Shu;YANG Dapeng;QI Yutong;YI Hongliang(State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang,110004,China;Easyforming Materials Technology(Suzhou)Co.,Ltd.,Suzhou,215123,China;School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai,200240,China)

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110819 [2]育材堂(苏州)材料科技有限公司,江苏苏州215123 [3]上海交通大学机械与动力工程学院,上海200240

出　　处：《现代交通与冶金材料》2025年第2期98-104,共7页Modern Transportation and Metallurgical Materials

基　　金：国家自然科学基金资助项目(52101128);江苏省重点研发计划项目(BE023059)。

摘　　要：使用高温摩擦设备对热冲压生产中常用的22MnB5铝硅镀层板进行了高温摩擦系数测试,分析了镀层的摩擦磨损机制,研究了镀层结构对高温摩擦系数的影响。结果表明,Al-Si镀层在高温下同时发生磨粒磨损与黏着磨损,但该作用只发生于镀层的表面。镀层结构对AS25/25与AS75/75的表面粗糙度无明显影响,Al-Si镀层的表层相是影响高温摩擦系数的关键因素。随着加热时间的延长,由于表层相对软韧的FeAl相占比增加,导致了高温摩擦系数的增大,因此实际生产中加热时间不宜过长。The high temperature friction coefficient of 22MnB5 Al-Si coated plate is tested by high tem-perature friction equipment.The friction and wear mechanism of coating are analyzed and the influence of coating structure on high temperature friction coefficient is studied.The results show that both abra-sive wear and adhesive wear of Al-Si coating occur at high temperature,but this effect only occurs on the surface of the coating.The coating structure has no obvious effect on the surface roughness of AS25/25 and AS75/75,and the surface phase of Al-Si coating is the key factor affecting the high tem-perature friction coefficient.With the extension of heating time,the high temperature friction coeffi-cient increases because the FeAl proportion of the surface layer is relatively soft and tough.Therefore,the heating time in actual production should not be too long.

关 键 词：Al-Si镀层 22MnB5 热冲压 摩擦系数 磨损 

分 类 号：TG335.22[金属学及工艺—金属压力加工] TG306