A new multi-element beta titanium alloy with a high yield strength exhibiting transformation and twinning induced plasticity effects

A new multi-element β titanium alloy Ti-3Al-5Mo-7V-3Cr (Ti-3573) was designed using the d-electron method based on a commercial alloy. An excellent yield strength of 750MPa, and a high strain hardening rate (SHR) of 1800MPa as well as 19% uniform elongation are some of the formidable mechanical char...

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Bibliographic Details
Published inScripta materialia Vol. 145; pp. 104 - 108
Main Authors Sadeghpour, S., Abbasi, S.M., Morakabati, M., Kisko, A., Karjalainen, L.P., Porter, D.A.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.03.2018
Subjects
Deformation structure
Martensitic phase transformation
Strain hardening
Titanium alloy
Twinning
Titanium alloy
Twinning
Deformation structure
Martensitic phase transformation
Strain hardening
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Summary:A new multi-element β titanium alloy Ti-3Al-5Mo-7V-3Cr (Ti-3573) was designed using the d-electron method based on a commercial alloy. An excellent yield strength of 750MPa, and a high strain hardening rate (SHR) of 1800MPa as well as 19% uniform elongation are some of the formidable mechanical characteristics exhibited by the designed alloy. Microstructural evaluation suggested that simultaneous transformation and twinning induced plasticity is responsible for the enhanced tensile properties. The results show that with precisely controlled alloying, it is possible to increase the yield strength with solid solutioning and still keep the SHR and ductility high enough. [Display omitted]
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2017.10.017