%0 Journal Article
%T Strong and ductile beta Ti每18Zr每13Mo alloy with multimodal twinning
%A Baolong Shen
%A Fan Sun
%A Fr谷d谷ric Prima
%A Jinyong Zhang
%A Ju Li
%A Yang Yang
%A Zheng Chen
%J Materials Research Letters
%D 2019
%R https://doi.org/10.1080/21663831.2019.1595763
%X ABSTRACT Body-centred cubic (BCC) Ti每18Zr每13Mo (wt%) alloy displays excellent yield strength (＞800 MPa), stable hardening (rateˋ>ˋ1500 MPa) and uniform ductility >18%, resulting from multi-TWIP (multiple twinning-induced plasticity) strengthening effect. This multimodal mechanisms include micro-scale {332}<113> deformation twinning (DT), nano-scale {112}<111> DT and a rare {5 8 11}<135> DT mode. Martensitic phase transformation is completely suppressed and the sample stays a single-phase solid solution throughout the deformation. In situ electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM) were used to characterize the multi-TWIP and dynamic Hall每Patch effect, with dislocation slip and large grain distortions at twin interfaces. GRAPHICAL ABSTRACT IMPACT STATEMENT The addition of Zr solutes stabilizes 汕 Ti-alloy and completely suppresses phase transformations, allowing {332}<113>, {112}<111> and {5 8 11}<135> multimodal twinning to give a better combination of strength, strain-hardening rate and ductility
%U https://www.tandfonline.com/doi/full/10.1080/21663831.2019.1595763