ZL101合金微镦粗尺度效应研究  

Experimental investigation on size effect of ZL101 alloy in micro-upsetting

作　　者：王子叶[1] 于沪平[1] 赵军[1] 

机构地区：[1]上海交通大学模具CAD国家工程研究中心,上海200030

出　　处：《模具技术》2011年第3期1-5,11,共6页Die and Mould Technology

基　　金：国家自然科学基金重点项目(50835002);国家自然科学基金项目(50975174);教育部博士点基金项目(200802480053)

摘　　要：在固态常温和半固态等温条件下,对微小尺度的ZL101合金进行了镦粗试验,研究坯料的流动应力变化情况。试验结果表明：对于固态常温微成形,存在着流动应力下降、流动应力波动的尺度效应;对于半固态等温微成形,在固相率为45%~90%的区间范围内,没有明显的流动应力下降、流动应力波动等尺度效应现象。In order to investigate the size effect,solid and semi-solid micro-upsetting of ZL101 alloy was implemented.The results show that,when the specimen is in solid state,the true stress-true strain curve decreases and fluctuates with the decrease of the dimension of ZL101 alloy;but the true stress-true strain curve doesn＇t decrease or fluctuate with the decrease of the dimension of ZL101 alloy,when the specimen is in semi-solid state and the solid fraction of the specimen varies between 45% and 90%.

关 键 词：ZL101合金 半固态 微成形 流动应力 尺度效应 

分 类 号：TG316.11[金属学及工艺—金属压力加工]