高强度钢板残余应力振动时效消减技术试验研究  

Experimental Study on Residual Stress Reduction for the High-strength Steel Based on Vibration Stress Relief

作　　者：张清东[1] 曾杰伟[1,2] 罗晓明[1] 张晓峰[1] 陈兵[1] 

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]国防科技大学磁悬浮技术研究中心,长沙410073

出　　处：《机械工程学报》2017年第1期86-92,共7页Journal of Mechanical Engineering

基　　金：国家科技支撑计划重点(2011BAE13B05);国家自然科学基金(51075031)资助项目

摘　　要：根据振动时效(Vibration stress relief,VSR)原理,采用高频振动台作为振动时效的激振装置,设计安装于振动试验台、用于给钢板施加面内拉伸载荷的钢板张力加载机构,在实验室搭建出钢板振动时效试验研究平台,对振动时效消除高强度钢板残余应力的有效性进行试验研究。在VSR处理前后采用X射线衍射方法对马氏体高强度钢板和试验对照用T2镀锡基板的表面残余应力分布进行测量表征,并同时对试样的板形瓢曲和翘曲程度做了测量。研究结果表明,所设计的振动时效试验平台可以实现带张力工况下的钢板同频激振;在一定的激振频率和时间的振动时效处理后,两种试验钢板的残余应力均得到一定程度的消减和均匀化,但是对于板形瓢曲和翘曲缺陷基本没有改变;相对而言,马氏体高强度钢板的时效效果明显弱于T2镀锡基板;试验结果可以反映材料强度对于振动时效效应的显著影响和振动时效对于板形瓢曲及翘曲缺陷的微弱影响。Based on the principle of vibration stress relief （VSR）, the effectiveness of the residual stress of high-strength steel plate is studied. The high frequency vibration table is selected as excitation device, and a steel in-plane tension loading device is designed and set up. Before and after the VSR process, X-ray diffraction method is utilized to measure the surface residual stress of Martensitic high strength steel plate and the control group-T2 tin plating board, and the possible deformations of strip buckling and warping of the steel plates are measured. Research results demonstrate that the high frequency vibration table and the loading tension strip steel can be implemented in the same vibration frequency. After being vibrated in a particular vibration frequency and a period of time, the residual stress of the two material steel is reduced and homogenized, but the strip buckling defects and warping defects of the steel plates has not changed and the residual stress reduction of high-strength steel is comparatively weaker than the control group. The experimental results can reflect that the strength of materials has significantly influence on vibration stress relief effect and vibration stress relief has limit influence on the strip buckling defects and warping defects of the steel plates.

关 键 词：振动时效 残余应力 高强度钢板 动应力 

分 类 号：TG335[金属学及工艺—金属压力加工]