微量预应变对15MnVN钢初始屈服抗力和疲劳极限的影响  

EFFECT OF SMALL PRESTRAIN ON INITIAL YIELDING RESISTANCE AND FATIGUE PROPERTIES OF 15MnVN STEEL

作　　者：吕宝桐[1] 郑修麟[1] 

机构地区：[1]西北工业大学

出　　处：《钢铁》1999年第5期55-56,50,共3页Iron and Steel

摘　　要：研究了微量拉伸预应变对１５ＭｎＶＮ钢初始屈服抗力和疲劳性能的影响。结果表明，微量预应变可使材料的疲劳强度下降，同时也使初始屈服抗力下降。加载方向对预应变后的比例极限影响很小。在供应状态和预应变状态下，材料的理论疲劳极限与比例极限近似相等。The effect of small tensile plastic prestrain on the initial yielding resistance and fatigue properties of 15MnVN steel is investigatedThe results indicate that the prestrain decreases the fatigue limit and high cycle fatigue life,as well as the initial yielding resistanceThe loading direction has little influence on the proportional limit of the prestrained materialThe theoretical fatigue limit of the steel under both asreceived and prestrained conditions are approximately equal to the proportional limit

关 键 词：低碳钢 预应变 疲劳强度 初始屈服抗力 低合金钢 

分 类 号：TG142.33[一般工业技术—材料科学与工程]