热处理工艺对钢丝的组织及力学性能的影响  

Effect of heat treatment process on microstructure and mechanical properties of steel wires

作　　者：梁宇[1,2] 明正兴[1] 李梅[1] 梁益龙[1,2] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025 [2]贵州省材料结构与强度重点实验室,贵州贵阳550025

出　　处：《金属热处理》2013年第2期109-112,共4页Heat Treatment of Metals

基　　金：贵州省科学技术基金(黔科合J字[2009]2231);贵州大学引进人才科研项目(贵大人基合字(2009)014)

摘　　要：对直径Ф3.2 mm的半成品钢丝采用重新奥氏体化后研究在不同风冷条件下力学性能的变化,探索了奥氏体化温度及风冷速度对70钢丝性能的影响关系。结果表明,随着保温温度增加钢丝的伸长率和断面收缩率随之下降;在相同奥氏体化温度下随冷却速度的加快,钢丝抗拉强度呈上升趋势,伸长率和断面收缩率没明显变化。钢丝在790℃奥氏体化,风冷时风机频率控制在50 Hz时可获得接近铅浴处理的力学性能。Mechanical properties of φ3.2 mm semi-produced 70 steel wires austenitized at different temperatures and cooled in different conditions were investigated. The results show that the elongation and reduction of area decrease with the increase of austenitizing temperature. The strength of 70 steel wires austenized at the same temperature increases with the increase of cooling rate, and the elongation and reduction of area change slightly. The mechanical properties of 70 steel wire austenitized at 790 ~C and cooled with 50 Hz blower frequency are close to that of patenting treated one.

关 键 词：70钢钢丝 索氏体化 力学性能 

分 类 号：TG113[金属学及工艺—物理冶金] TG115.21[金属学及工艺—金属学]