夹杂物对弹簧钢疲劳性能的影响  

Effect of Inclusion on Fatigue Properties of Spring Steel

作　　者：鲁修宇[1] 戴明杰[2] 吴杰[1] 吴超[1] 蒋跃东[1] 罗德信[1] 王贞[2] 

机构地区：[1]武汉钢铁(集团)公司研究院,湖北武汉430080 [2]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081

出　　处：《武汉工程职业技术学院学报》2014年第2期28-31,共4页Journal of Wuhan Engineering Institute

摘　　要：弹簧是汽车发动机的重要组件之一,使用一段时间后就会发生失效。造成弹簧失效的原因有疲劳、磨损、腐蚀和永久变形等,但由于弹簧通常承受的是交变载荷,所以疲劳是失效的主要原因。引起弹簧疲劳失效的主要因素是钢中非金属夹杂物和表面缺陷。论述了非金属夹杂的变形率、数量、尺寸、形状及分布对弹簧钢疲劳性能的影响,同时总结了夹杂物尺寸与钢材疲劳极限的量化关系。Spring, which will fail after being used for a period of time, is an important part in the auto mobile engine. Spring failure is mainly caused by fatigue, abrasion, corrosion and permanent deformation. Fatigue arising from nonmetallic inclusion and surface defect of steel is responsible for the failure due to its alternating load in operation. In the paper, the effect of deformation rate, amount, size, shape and dis tribution of nonmetallic inclusion on the fatigue property of spring steel was discussed, and the quantita tive relation between the size of inclusion and fatigue limit of steel was summarized.

关 键 词：夹杂物 弹簧钢 疲劳极限 

分 类 号：TG113.255[金属学及工艺—物理冶金]