Coexistence of multi-deformation modes in beta Ti alloys with improved yielding strength and ductility
Name
matecconf_ti2019_11069.pdf
Description
Published version
Size
2.08 MB
Format
Unknown
Checksum (MD5)
0f42663f1de37080de771c769ae78719
Author(s)
Chen, Guanfang
Zhang, Jinyong
Fu, Yangyang
Chen, Zheng
Sun, Fan
Li, Ju
Date Issued
2020
Journal
MATEC Web of Conferences
Publisher
EDP Sciences
Version
Final published version
Abstract
By suppressing SIM (stress induced martensitic) phase transformations, a strong and ductile beta TWIP (twinning induced plasticity) Ti-Mo based alloy was achieved, thanking to the coexistence of mechanical twinning ({112}<111> mode and {332} <113> mode) and dislocation glide. The alloy displayed extra high yielding stress, stable strain-hardening rate and adequate ductility. In-situ traction/EBSD technique and TEM characterizations were employed to investigate the plastic deformation mechanism. The dislocation slipping was mediated by bimodal twinning mechanism, composed by high density nano-scale {112} twinning in micro {332} twinning grid. The study aims to exploit novel design strategy for strengthening ductile TWIP Ti alloys, attributed to multimodal twinning effects.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1051/MATECCONF/202032111069
