热处理对TA15钛合金组织的影响  

Effect of Heat Treatment on Microstructure of TA15 Titanium Alloy

作　　者：王昉[1] 缪强[1] 梁文萍[1] 任蓓蕾[1] 裴秋旭 

机构地区：[1]南京航空航天大学材料科学与技术学院,江苏南京211100

出　　处：《热处理》2015年第2期24-27,共4页Heat Treatment

基　　金：国家自然科学基金面上项目(51174119);南京航空航天大学博士学位论文创新与创优基金(BCXJ14-11);航空科学基金(2012ZF52071)

摘　　要：研究了从820℃、900℃、980℃和1030℃水冷、空冷和炉冷对TA15钛合金微观组织和硬度的影响。结果表明,随着加热温度的升高,初生等轴α相不断减少,亚稳定β相不断分解,形成细小的次生针状α相(αs);随着冷却速度的降低,合金的组织向针状和片状(α+β)相转变。显微硬度随加热温度的升高而提高,而冷却方式对其硬度影响不大。Effect of cooling in water,air and furnace from 820 ℃、900 ℃、980 ℃ and 1030 ℃ respectively on microstructure and hardness of a TA15 titanium alloy was investigated.The results show that with the increase of heating temperature primary equiaxed αphase decreases,metastable βphase decomposes and forms fine secondary acicular αs phase,and that as the cooling rate becomes lower the microstructure of TA15 alloy transforms into acicular and lamellar（α＋β）phase.In addition,the microhardness of TA15 alloy increases with the increase of heating temperature,but the cooling manners have a little effect on the microhardness.

关 键 词：TA15钛合金 热处理 显微组织 

分 类 号：TG166.5[金属学及工艺—热处理]