TY - JOUR
T1 - Deformation behavior of metastable β-type Ti-25Nb-2Mo-4Sn alloy for biomedical applications
AU - Guo, S.
AU - Meng, Q. K.
AU - Cheng, X. N.
AU - Zhao, X. Q.
PY - 2014/10
Y1 - 2014/10
N2 - The deformation behavior of metastable β-type Ti-25Nb-2Mo-4Sn (wt%) alloy subjected to different thermo-mechanical treatments was discussed by the combining results from transmission electron microscope, tensile test and in-situ synchrotron X-ray diffraction. Visible "double yielding" behavior, which is characterized by the presence of stress-plateau, was observed in the solution treated specimen. Upon a cold rolling treatment, the Ti-25Nb-2Mo-4Sn alloy performs nonlinear deformation because of the combined effects of elastic deformation and stress-induced α″ martensitic transformation. After the subsequent annealing, the β phase is completely stabilized and no stress-induced martensitic transformation takes place on loading due to the inhibitory effect of grain boundaries and dislocations on martensitic transformation. As a result, the annealed specimen exhibits linear elastic deformation.
AB - The deformation behavior of metastable β-type Ti-25Nb-2Mo-4Sn (wt%) alloy subjected to different thermo-mechanical treatments was discussed by the combining results from transmission electron microscope, tensile test and in-situ synchrotron X-ray diffraction. Visible "double yielding" behavior, which is characterized by the presence of stress-plateau, was observed in the solution treated specimen. Upon a cold rolling treatment, the Ti-25Nb-2Mo-4Sn alloy performs nonlinear deformation because of the combined effects of elastic deformation and stress-induced α″ martensitic transformation. After the subsequent annealing, the β phase is completely stabilized and no stress-induced martensitic transformation takes place on loading due to the inhibitory effect of grain boundaries and dislocations on martensitic transformation. As a result, the annealed specimen exhibits linear elastic deformation.
KW - Deformation behavior
KW - In-situ synchrotron X-ray diffraction
KW - Martensitic transformation
KW - Metastable β Ti alloy
UR - https://www.scopus.com/pages/publications/84903894144
U2 - 10.1016/j.jmbbm.2014.06.006
DO - 10.1016/j.jmbbm.2014.06.006
M3 - 文章
C2 - 25011015
AN - SCOPUS:84903894144
SN - 1751-6161
VL - 38
SP - 26
EP - 32
JO - Journal of the Mechanical Behavior of Biomedical Materials
JF - Journal of the Mechanical Behavior of Biomedical Materials
ER -