热处理对Ti-6Al-4V ELI合金厚板组织与性能的影响  

Effect of Heat Treatment on Microstructure and Mechanical Properties of Ti-6Al-4V ELI Alloy Plate

作　　者：李辉[1] 曲恒磊[1] 赵永庆[1] 冯亮[2] 叶红川[2] 周伟[2] 

机构地区：[1]西北工业大学材料学院,陕西西安710072 [2]西北有色金属研究院,陕西西安710016

出　　处：《稀有金属》2005年第6期841-844,共4页Chinese Journal of Rare Metals

基　　金：国家"863"高技术计划资助项目(2002AA305107)

摘　　要：研究了热处理对Ti-6Al-4V超低间隙(ELI)合金厚板组织与性能的影响.结果表明,Ti-6Al-4V ELI合金经α+β区热处理后得到双态组织,强度、塑性都较高;经β区热处理后得到片层组织,细片层组织强度较高.片层粗化后,强度降低.当片层尺寸小于某一临界值(～5μm)时,延伸率随着片层的粗化升高,当片层继续粗化时,延伸率反而下降.The effect of heat treatment on the microstructure and mechanical properties of Ti-6Al-4V ELI alloy plate was studied. The result shows that bimodal microstructure exhibits higher strength and ductility. Being heat treated in β zone, acquired lamellar microtructure is obtained. The coarser lamina is, the lower strength is; when the lamina is less than some critical value （ - 5 μm ）, the elongation increases with the coarseness increasing, but then turns down.

关 键 词：TI-6AL-4V ELI 板材 组织 性能 

分 类 号：TG146[一般工业技术—材料科学与工程]