Peculiarities of microstructure and mechanical behavior of VT8M-1 alloy processed by rotary swaging

5th International Conference Recent Trends in Structural Materials

Modina, Iu M.^1 ; Polyakov, A.V.^1 ; Dyakonov, G.S.^1 ; Yakovleva, T.V.^1 ; Raab, A.G.^1 ; Semenova, I.P.^1

Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, 12 K. Marx street, Ufa

450008, Russia^1

关键词: Mechanical behavior;    Processing technique;    Rotary swaging;    Strength and ductilities;    Stress-strained state;    Two phase;    UFG structure;    Ultra-fine grained ( UFG);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/461/1/012056/pdf
DOI  :  10.1088/1757-899X/461/1/012056

来源: IOP

【 摘 要 】

This research is focused on the study of the relationship between microstructure and mechanical behavior of two-phase Ti alloy VT8M-1 (Ti-5.7Al-3.8Mo-1.2Zr-1.3Sn) in the ultrafine-grained (UFG) state, which is produced by rotary swaging (RS) as compared to equal-channel angular pressing (ECAP). It is shown that both processing techniques enable forming a UFG structure and enhanced mechanical properties in the alloy. Distinguishing features of the UFG structure produced by RS are conditioned by different stress-strained states in the alloy in comparison with ECAP. The relationship between structure, strength and ductility of the alloy processed by RS and ECAP is discussed.