摘要
通过透射电镜、扫描电镜和光学显微镜等手段，研究丝材制备过程中BT16钛合金的组织结构演变。结果表明：BTl6合金退火态丝材具有良好的力学性能，断面收缩率ψ为62％-65％，冷镦变形量达到80％；退火后的合金组织由初生等轴α相、少量短条状α相及晶间β相组成的；固溶时效后合金组织由不规则的等轴状初生α相和析出针状α相的β相组成，其中淬火时效合金中的针状α’相更细小。
The microstructure evolution of titanium alloy BT16 during the preparation wires were investigated by transmission electron microscopy, scanning electronic microscopy and optical microscopy. The results show that BT16 alloy annealed wires have excellent mechanical properties with area reduction （ψ） of 62%-65% and cold heading deformation amount of 80%. After annealing, the alloy microstructure consists of primary equiaxial α phases, a few short-bar α＇ phases and intergranular β phases. The microstructure of solid-aged alloy is composed of irregularl equiaxial primary α phases and β phases which precipitate needle α＇ phases, while the needle α＇ phases in the quench-aged alloy are smaller.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2012年第10期2756-2761,共6页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金资助项目(51175231)
关键词
BT16钛合金
冷镦紧固件
微观组织
固溶
时效
力学性能
BT16 titanium alloy
microstructure
cold upsetting fasteners
solution
aging
mechanical properties
