Superplastic Deformation at High Strain Rate and Low Temperature of A Ti-12Co-5Al Allog

Liu Qing; Hu Xiaohua; Yang Wangyue; Chen Guoliang

doi:10.13374/j.issn1001-053x.1993.03.023

Volume 15 Issue 3

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Liu Qing, Hu Xiaohua, Yang Wangyue, Chen Guoliang. Superplastic Deformation at High Strain Rate and Low Temperature of A Ti-12Co-5Al Allog[J]. Chinese Journal of Engineering, 1993, 15(3): 267-271. doi: 10.13374/j.issn1001-053x.1993.03.023

Citation:

Liu Qing, Hu Xiaohua, Yang Wangyue, Chen Guoliang. Superplastic Deformation at High Strain Rate and Low Temperature of A Ti-12Co-5Al Allog[J]. Chinese Journal of Engineering, 1993, 15(3): 267-271. doi: 10.13374/j.issn1001-053x.1993.03.023

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Superplastic Deformation at High Strain Rate and Low Temperature of A Ti-12Co-5Al Allog

doi: 10.13374/j.issn1001-053x.1993.03.023

Department of Materials Science and Engineering

Received Date: 1992-11-08
Available Online: 2021-10-18

Abstract

Abstract

A Ti-12Co-5A1 alloy sheet with an ultra fine α-Ti+Ti₂Co microstructu was obtained after a proper melting process and thermomechanical treatment. The all under this state exhibits very large superplastic elongation at relatively low temperature ar high strain rates. The elongation more than 1 500% was obtained at a strain rate of 3×10^-2s^-1 and 700℃. The superplastic deformation induced the size increase and shape chan of Ti₂Co intermetallic particles. No cavity was found in the specimen after superplast deformation to 500%.
- Ti-Co-Al alloy,
- superpiasticity,
- deformation mechanism