A β-titanium alloy with extra high strain-hardening rate: Design and mechanical properties. (15th March 2016)

• Record Type: Journal Article
• Authors: Brozek, C.; Sun, F.; Vermaut, P.; Millet, Y.; Lenain, A.; Embury, D.; Jacques, P.J.; Prima, F.
• Is Part Of: Scripta materialia. Volume 114(2016)
• Page Start: 60
• Page End: 64
• Publication Date: 2016-03-15
• Subjects: Titanium alloys -- Twinning -- Strain-hardening -- Deformation microstructure; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.11.020
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: In this paper, a new β-metastable titanium alloy, based on the Ti–Cr–Sn system, displaying both an extremely high work hardening rate and a uniform deformation larger than 0.35, was designed and successfully tested. The compositional design was guided through a stability mapping approach based on the "d-electron design method" and using an unexploited region of the Bo/Md map. Detailed analysis of deformation mechanisms shows combined transformation-induced plasticity (TRIP) and twinning-induced plasticity (TWIP) effects, resulting in a complex network of microstructural features and giving rise to marked kinematic hardening. Graphical abstract: