逐层剥离法测量高碳钢盘条残余应力  

Residual stress profile in high carbon rods measured by layer removal technique

作　　者：杨帆[1,2] 王燕[2] 蒋建清[2] 

机构地区：[1]太阳能技术研究中心,东南大学能源与环境学院,江苏省南京210096 [2]江苏省先进金属材料高技术研究重点实验室,东南大学材料科学与工程学院,江苏省南京211189

出　　处：《材料科学与工艺》2010年第4期579-583,共5页Materials Science and Technology

基　　金：江苏省博士后科研资助计划(0602001A);中国博士后科学基金(20080431057);973计划前期研究专项课题(2007CB616903)

摘　　要：基于ASTXSTRESS3000型应力仪,结合化学腐蚀逐层剥离技术的基础上,研究了热轧高碳钢盘条及其拉拔钢丝的表面轴向应力,并测量了盘条内部铁素体的轴向应力分布.研究表明盘条及钢丝的表面状态对残余应力的测量值有重要的影响,盘条轴向应力沿横截面直径方向的分布比较均匀,接近于零应力的水平.经过应变量为1.8的连续拉拔形变后,钢丝外表面的轴向应力值明显提高,由原始盘条表面的6.4MPa,增加到500MPa左右.Based on the AST XTRESS 3000 system,the longitudinal stresses of ferrite phase in high carbon the rod and cold-drawn wire were explored,and meanwhile the ferrite stress profiling in rod was quantitatively determined by layer removal technique,in which chemical etching was used.The results indicate that the stress states of rod and wire are closely related to the surface treatment.A homogenous distribution of longitudinal stress cross the section of rod is found,and the stress is near zero.The surface axial stress in cold-drawn wire increased to about 500MPa after cold drawing with a true strain of 1.8.

关 键 词：盘条 轴向应力 冷拔钢丝 逐层剥离技术. 

分 类 号：TG356.4[金属学及工艺—金属压力加工] TG115.2