半固态高碳钢T10不同变形速率下的压缩变形  

Compress Deformation of Semi-solid High Carbon Steel T10 at Different Rate

作　　者：康永林[1] 李激光[1] 赵爱民[1] 宋仁伯[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《科学技术与工程》2004年第3期222-224,共3页Science Technology and Engineering

基　　金：国家自然科学基金 ( 5 0 1740 0 3 );上海宝钢联合资助

摘　　要：对电磁搅拌法制备的高碳钢T10半固态坯料 ,采用Gleeble— 15 0 0热 /力模拟机进行压缩变形实验 ,研究其在不同变形速率下的流变应力和组织演变规律。实验结果表明 ,随变形速率的提高 ,应力峰值下降 ,热软化现象减弱 ,试样心部的晶粒尺寸减小 ,边部的“大结构”The compression deformation experiments were carried out by using Gleeble-1500 thermal simulator with specimens of semi-solid high carbon steel T10 fabricated by electromagnetism stirring process. The deformation resistance and microstructure evolution law and the deformation mechanism of samples at different rate were analyzed. Experimental results show, the maximum value of the deformation resistance of semi-solid high carbon steel T10 decreases, at the same time, aggregation at the edge of sample break down, and the average size of grains at center decreases with the deformation rate increasing.

关 键 词：半同态 高碳钢 压缩变形 组织演变 流变应力 变形速率 电磁搅拌法 半固态加工 

分 类 号：TG115.53[金属学及工艺—物理冶金]