轧制工艺和退火温度对TC4ELI钛合金厚板显微组织的影响  

Effects of Rolling Procedure and Annealing Temperature on Microstructure of TC4ELI Titanium Alloy Thick-plate

作　　者：王俭[1,2] 李有华 李蒙[1,2] 王勤波[2] 王新 张永强[1,2] WANG Jian;LI Youhua;LI Meng;WANG Qinbo;WANG Xin;ZHANG YongQiang(Baoti Group Ltd.,Baoji 721014,China;Baoji Titanium Industry Co.,Ltd.,Baoji 721014,China)

机构地区：[1]宝钛集团有限公司,陕西宝鸡721014 [2]宝鸡钛业股份有限公司,陕西宝鸡721014

出　　处：《有色金属材料与工程》2018年第3期32-35,47,共5页Nonferrous Metal Materials and Engineering

摘　　要：研究了轧制工艺和退火温度对TC4ELI钛合金厚板显微组织的影响。结果表明:采用工艺1轧制后的板材显微组织为双态组织;采用工艺2轧制后板材的显微组织为网篮组织。将网篮组织板材在不同温度下退火后发现:退火温度低于900℃时,板材显微组织没有明显变化,仍为网篮组织;退火温度为940℃时,板材显微组织中出现了再结晶现象,一部分条状α相变成等轴状α相,网篮组织向等轴组织过渡。合适的退火温度为780~900℃。The effect of rolling procedure and annealing temperature on microstructure of TC4ELI Titanium Alloy thick-plate was investigated.The results show that duplex microstructures are obtained after rolled by Procedure 1.The basket-weave microstructure is observed after rolled by Procedure 2.The plates with basket-weave microstructure are annealed at different temperatures.There is no significant change with the basket-weave microstructure maintaining,when the annealing temperature is lower than 900℃.Recrystallization is observed when the annealing temperature is 940℃.Some lamellarαphase transforms to the equiaxedαphase.The basket-weave microstructure transforms to equiaxed microstructure.The appropriate annealing temperature is 780-900℃.

关 键 词：TC4ELI钛合金 网篮组织 再结晶 退火 

分 类 号：TG146[一般工业技术—材料科学与工程]