TY - JOUR
T1 - High-cycle fatigue of a titanium alloy
T2 - the role of microstructure in slip irreversibility and crack initiation
AU - Tan, Changsheng
AU - Sun, Qiaoyan
AU - Zhang, Guojun
AU - Zhao, Yongqing
N1 - Publisher Copyright:
© 2020, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2020/9/1
Y1 - 2020/9/1
N2 - The influence of microstructure on slip irreversibility and crack initiation during high-cycle fatigue of a titanium alloy has been explored. The results indicate that the fatigue strength of lamellar microstructure is higher than the bimodal microstructure. The underlying microstructure and strain partition below the fatigue crack origins have been revealed through electron backscattered diffraction (EBSD). Furthermore, the slip irreversibility and the corresponding accumulative strain to fracture were calculated and compared for these two microstructures. Finally, a critical parameter about (8.1 ± 2) × 10–4·μm−2 for fatigue crack initiation was achieved with the present titanium alloy, which was found to be independent of microstructural types.
AB - The influence of microstructure on slip irreversibility and crack initiation during high-cycle fatigue of a titanium alloy has been explored. The results indicate that the fatigue strength of lamellar microstructure is higher than the bimodal microstructure. The underlying microstructure and strain partition below the fatigue crack origins have been revealed through electron backscattered diffraction (EBSD). Furthermore, the slip irreversibility and the corresponding accumulative strain to fracture were calculated and compared for these two microstructures. Finally, a critical parameter about (8.1 ± 2) × 10–4·μm−2 for fatigue crack initiation was achieved with the present titanium alloy, which was found to be independent of microstructural types.
UR - https://www.scopus.com/pages/publications/85085358964
U2 - 10.1007/s10853-020-04845-7
DO - 10.1007/s10853-020-04845-7
M3 - 文章
AN - SCOPUS:85085358964
SN - 0022-2461
VL - 55
SP - 12476
EP - 12487
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 26
ER -