一种低碳低合金超高强度钢丝低周疲劳寿命的研究  

LOW CYCLE FATIGUE LIFE OF A LOW CARBON LOW ALLOY ULTRA-HIGH STRENGTH STEEL WIRE

作　　者：朱启惠[1] 季长涛[1] 刘云旭[1] 刘萍[1] 

机构地区：[1]吉林工学院,吉林大学

出　　处：《钢铁》1996年第7期52-55,共4页Iron and Steel

摘　　要：采用恒应变幅（△ε）控制低周疲劳试验方法，测定了一种低碳低合金超高强度钢丝的循环应力幅（△σ）和最大应力（σ_（ｍａｘ））与循环周次（Ｎ）之间的关系，并与高碳高强度Ｐａｔｅｎｔｉｎｇ钢丝对比。研究了温形变处理对钢丝低周疲劳性能的影响。结果得出，低碳低合金钢丝比高碳Ｐａｔｅｎｔｉｎｇ钢丝具有高的低周疲劳抗力，温形变处理又可提高低周疲劳寿命３０％～３５％。并对这种钢丝的低周疲劳损伤进行了评价。By means of low cycle-fatigue test controlled by constant strain amplitude(△_ε),the relation among cycle stress amplitude(△_σ),maximum stress (σ_(max))and cycle number(N) of a low carbon low alloy ultra-high strength steel wire was determined and a high carbon Patenting steel wire was adopted as reference, The effect of warm deformation treatment on low cycle fatigue life was also studied. The results show that the low cycle fatigue properties of the wire is higher than that of high carbon Patenting steel wire.

关 键 词：超高强度 钢丝 低周疲劳 寿命 温形变 

分 类 号：TG356.46[金属学及工艺—金属压力加工]