摘要
为研究形变强化工艺对93W-4.9Ni-2.1Fe性能的影响,采用大变形量旋转锻造工艺制备了93W -4.9Ni-2.1Fe合金,并利用SEM与TEM技术分析了旋转锻造态93W-4.9Ni-2.1Fe合金显微组织的形态与尺寸.结果表明:钨合金材料经形变强化后,钨晶粒内部出现由高密度位错形成的胞状组织以及长条状形变晶粒,且粘结相内位错密度较高;旋锻态93W-4.9Ni-2.1Fe合金在具有高强度的同时,保持着一定的延性;旋锻态钨合金的力学性能与变形量及粘结相的分布有关.
Microstructure and mechanical properties of 93W- 4.9Ni -2. 1Fe alloys after swaging treatment were investigated in order to find the effect of deformation strengthening technique on properties of 93W - 4.9Ni -2. 1Fe alloys. Microstructure morphology and size were analysed by SEM and TEM. The experimental results showed that high-density dislocations in tungsten grains and deformed strip W grains after swaging. And high-density dislocations were also found in binder phase. Swaged 93W - 4.9Ni - 2.1Fe alloys exhibited not only high strength, but also certain ductility. The mechanical properties of swaged tungsten heavy alloy were found to be mainly dependent on the deformation amount and distribution of binder phase.
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2005年第4期442-444,448,共4页
Materials Science and Technology
关键词
高密度钨合金
旋转锻造
形变强化
微观组织
胞状组织
tungsten heavy alloy
swaging
deformation strengthening
microstructure
cell structure
