双重退火对TA12A钛合金锻件组织和力学性能的影响  

Effect of Double Annealing on Microstructure and Mechanical Properties of TA12A Titanium Alloy Forgings

作　　者：张晋涛[1] 莫安军 吴菊英 张泽磊[1] Zhang Jintao;Mo Anjun;Wu Juying;Zhang Zelei(Sichuan Engineering Technical College,Deyang,Sichuan,618000,China;Deyang Wanhang Die Forging Co.,LTD.China National Erzhong Group,Deyang,Sichuan,618000,China)

机构地区：[1]四川工程职业技术学院材料系,四川德阳618000 [2]中国第二重型机械集团德阳万航模锻有限责任公司,四川德阳618013

出　　处：《装备制造与教育》2022年第2期31-33,共3页Equipment Manufacturing and Education

摘　　要：通过改变一次退火温度,研究了双重退火对TA12A钛合金锻件组织和力学性能的影响。研究表明,随着一次退火温度的提高,初生α相含量逐渐减少,次生片状α相含量逐渐增加、厚度逐渐增大。同时β相晶粒尺寸也越来越大。随着一次退火温度的提高,TA12A钛合金的断裂韧度有一定的提升,其他力学性能无明显变化。Effect of double annealing on microstructure and mechanical properties of TA12A titanium alloy forgings is investigated in this paper.Studies have shown that with the increasing of primary annealing temperature,the content of primaryαphase decreased gradually,the content secondaryαphase increased gradually,and the thickness increased gradually.At the same time,the grain size ofβphase increased gradually.With the increasing of annealing temperature,the fracture toughness of TA12A titanium alloy had a certain improvement,and other mechanical properties had no obvious change.

关 键 词：TA12A钛合金 退火 初生Α相 次生α相 力学性能 

分 类 号：TG166[金属学及工艺—热处理]