摘要
论述了TB2(Ti-5Mo-5V-8Cr-3Al)钛合金的超塑性成形在空间飞行器结构件—波纹板(厚0.25mm)制造上的应用技术,内容包括成形工艺参数和试验装置。结果表明,TB2钛合金粗晶板材,不经过组织细化处理,在750±10℃时具有良好的超塑性,并在超塑性成形过程中发生动态再结晶,使晶粒细化;同时,强度(δ_b)和塑性(δ)均有所提高。对于TB2薄壁波纹板而言,不锈钢(1Cr18Ni9Ti)成形模具及其平面密封结构能够满足超塑性成形的使用要求。
This paper discusses the technology for the SPF of the TB2(Ti-5Mo-5V-8Cr-3Al) titanium alloy in corrugated plate (t=0.25mm) anelement of spacecraft structure. The paper includes the discussion of theparameters of forming process and experimental equipment.The resultsshow that rough grain plate of TB2 titanium alloy has good superplasticityat 750±10℃ when no treatment of refined structure is done.Because of thedynamical recrystallization during SPF,the grain becomes smaller.Also,both the strength (σ_b) and the plasticity (δ) are better. For the thin corrugatedplate of TB2 titanium alloy,forming dies made of strainless steel(1Cr18Ni9Ti)and its plane sealing structure can meet the practical demand of SPF.
出处
《中国空间科学技术》
EI
CSCD
北大核心
1992年第4期74-78,共5页
Chinese Space Science and Technology
关键词
钛合金
超塑性
成形
工艺
Titanium alloy
Superplasticity
Forming process
