TA15钛合金大锻件热处理强化及机制  

Heat Treatment Strengthening and Its Mechanism of Large Forging for TA15 Titanium Alloy

作　　者：张旺峰[1] 王玉会[1] 马济民[1] 

机构地区：[1]北京航空材料研究院钛合金研究室,北京100095

出　　处：《稀有金属》2010年第1期1-5,共5页Chinese Journal of Rare Metals

基　　金：国家973计划资助项目(2007CB613803)

摘　　要：研究了TA15钛合金大型锻件退火温度和保温时间对室温和500℃高温拉伸性能的影响,结果表明:随着退火温度的升高,拉伸强度增大,在800～890℃温度范围内,室温强度升幅达90MPa,500℃高温强度升幅达66MPa;随保温时间延长,室温和500℃高温拉伸强度呈峰值变化,保温3h时最高。研究表明,退火温度提高,基体β转变组织分解析出第二相起到强化作用,提高了大锻件的强度。The effect of annealing temperature and holding time on the tensile properties of large forging TA15 titanium alloy at room and high temperatures 500 ℃ were studied. The results showed that with the annealing temperature increasing from 800 ℃ to 890 ℃,the tensile strength increased 90 and 66 MPa at room temperature and 500 ℃ respectively; and with the holding time extending,the tensile strength at room-temperature and 500 ℃ increased in the beginning and then decreased,a peak value occurred when the holding...

关 键 词：TA15钛合金 大锻件 热处理 析出强化 再结晶 

分 类 号：TG156[金属学及工艺—热处理]