摘要
研究了21-4N气门钢在选定温度下的拉伸和摩擦磨损性能。研究结果表明:随温度提高,21-4N钢的抗拉强度和屈服强度下降,塑性先增后减。在室温~650℃区间,21-4N钢的摩擦系数和磨损量都表现为先减后增,在500℃时达到最小值。室温下21-4N钢的磨损量较大,磨损机理主要为磨粒磨损和黏着磨损;400~600℃时,试样磨损量较小,氧化磨损和黏着磨损为主要磨损机制;600~650℃时,21-4N钢磨损量急剧增加,表现为严重的氧化磨损和磨料磨损,附带有轻微的黏着磨损。
21-4N valve steel’s tensile and wear properties were studied at selected temperatures.Results indicate that the tensile and yield strength of 21-4N steels decrease gradually,and the plasticity tends to increase first and then decrease with the rising of temperature.In the range from room temperature to 650℃,the friction coefficient and wear loss of the specimens tend to decrease first and then increase,and reach the minimum value at 500℃.At room temperature,the wear loss of the sample is large,and the wear mechanisms are abrasive wear and adhesive wear.In the temperature range of 400-600℃,the wear loss of the specimens is small,which is mainly characterized by oxidative wear and adhesion wear mechanisms;From 600 to 650℃,the wear loss of the specimen increases sharply,exhibiting severe oxidative and abrasive wear with slight adhesive wear.
作者
尹联民
屈盛官
赖福强
肖传伟
李小强
YIN Lianmin;QU Shengguan;LAI Fuqiang;XIAO Chuanwei;LI Xiaoqiang(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,China)
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2020年第3期409-413,F0003,共6页
Journal of Materials Science and Engineering
基金
国家自然科学基金资助项目(41572362)
广东省科技装备动员资助项目(2016KZ010104)
广东省科技计划资助项目(2016B090926001)。
关键词
气门钢
高温性能
磨损机理
Engine valve steel
High temperature properties
Wear mechanisms
