汽车钢板冲压性能的内耗谱表征  

Mechanical Spectroscopy Characterization of Forming Property of Automobile Steel Sheets

作　　者：于宁[1] 刘永刚[2] 张志波[1] 詹华[2] 张建[2] 戢景文[1] 

机构地区：[1]东北大学理学院材料物理与化学研究所,沈阳110004 [2]马鞍山钢铁股份有限公司技术中心,安徽马鞍山243000

出　　处：《上海交通大学学报》2010年第5期624-627,共4页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目(50874131);东北大学与马鞍山钢铁股份有限公司合作项目

摘　　要：测量了未出现上下屈服点的常规汽车钢板和出现冲压变形滑移带、＂橘皮＂等不均匀变形钢板在室温至350℃的内耗,并对钢板阻尼峰的本质和力学谱特征进行分析.结果表明,冲压性能不同的钢板内耗谱明显不同.常规钢板的内耗曲线上出现了3个较小的内耗峰;出现冲压变形滑移带的钢板中呈现出2个较高的内耗峰;而出现＂橘皮＂的钢板中则呈现出4~5个很小的内耗峰.The internal friction in low carbon aluminium killed DC01 automobile steel sheets,which are of normal without super-lower yield point,and of inhomogeneous stamping deformation containing Lüders bands and/or orange skin,were measured from room temperature to 350℃.It is found that for the automobile sheets with different stamping performancies their mechanical spectra have obviously different characterstics. There is a mechanical spectrum with three small peaks for the normal sheet,and there appears a double-peak spectrum in which the two peaks are all obviously high for the sheet with Lüders bands,and there is a multi-peak spectrum having 4 to 5 very small peaks for the sheet with orange skin.The discussion on the nature of the damping peaks and the characteristic of the mechanical spectra was made.

关 键 词：汽车钢板 冲压性能 内耗谱表征 

分 类 号：TG386[金属学及工艺—金属压力加工] O483[理学—固体物理]