退火温度对高氧TC4钛合金组织和力学性能的影响  

Effects of Annealing Temperature on Microstructure and Mechanical Properties of High Oxygen TC4 Titanium Alloy

作　　者：李重阳 娄宏伟 张鑫鑫 李昕祺 刘时兵 刘天翼 李鸿举 LI Chongyang;LOU Hongwei;ZHANG Xinxin;LI Xinqi;LIU Shibing;LIU Tianyi;LI Hongju(National Key Laboratory of Advanced Casting Technologies,Shenyang Research Institute of Foundry Co.,Ltd.,CAM,Shenyang 110022;Aero Engine Corporation of China Harbin Dongan Engine Co.,Ltd.,Harbin 150066)

机构地区：[1]中国机械总院集团沈阳铸造研究所有限公司,高端装备铸造技术全国重点实验室,沈阳110022 [2]中国航发哈尔滨东安发动机有限公司,哈尔滨150066

出　　处：《特种铸造及有色合金》2025年第2期263-266,共4页Special Casting & Nonferrous Alloys

摘　　要：对O含量为18%的TC4钛合金分别进行680~830℃的退火处理,并对其组织和性能进行了分析。结果表明,退火时铸件会在内、外驱动力的共同作用下发生一定程度的回复现象,铸件在不同退火温度下的组织和性能变化差异较小。当退火温度为780℃时,合金显微组织为α+β+α″相组成的集束层,分布均匀,此时合金的综合力学性能较好。The annealing treatment at 680~830℃was conducted on TC4 titanium alloy with oxygen content of 18%,and the microstucture and properties were investigated.The results indicate that castings suffer a certain degree of recov⁃ery under the combined action of internal and external driving forces during annealing,and the variaraion differences in microstructure and performance of castings are relatively small at different annealing temperatures.The structure is evenly distributed buncher composed ofα+β+α″at 780℃,where the comprehensive mechanical properties are desirable.

关 键 词：高氧 TC4钛合金 退火处理 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TG156[金属学及工艺—金属材料]