TY - GEN
T1 - Young's modulus changeable titanium alloys for orthopaedic applications
AU - Nakai, Masaaki
AU - Niinomi, Mitsuo
AU - Zhao, Xiaoli
AU - Zhao, Xingfeng
PY - 2012/1/1
Y1 - 2012/1/1
N2 - A novel biomedical titanium alloy with the ability to undergo self adjustment in its Young's modulus was developed. In spinal fixation devices, the Young's modulus of the metallic implant rod should be sufficiently high to suppress springback for the surgeon, but should also be sufficiently low to prevent stress shielding for the patient. Therefore, deformation-induced ? phase transformation was introduced into β-type titanium alloys so that the Young's modulus of only the deformed part would increase during operation, while that of the non-deformed part would remain low. The increase in the Young's modulus due to cold rolling was investigated for a binary Ti-12Cr alloy (mass%). Microstructural observation and Young's modulus measurement reveal that the Ti-12Cr alloy undergoes deformation-induced ? phase transformation and exhibits the increase in the Young's modulus by deformation.
AB - A novel biomedical titanium alloy with the ability to undergo self adjustment in its Young's modulus was developed. In spinal fixation devices, the Young's modulus of the metallic implant rod should be sufficiently high to suppress springback for the surgeon, but should also be sufficiently low to prevent stress shielding for the patient. Therefore, deformation-induced ? phase transformation was introduced into β-type titanium alloys so that the Young's modulus of only the deformed part would increase during operation, while that of the non-deformed part would remain low. The increase in the Young's modulus due to cold rolling was investigated for a binary Ti-12Cr alloy (mass%). Microstructural observation and Young's modulus measurement reveal that the Ti-12Cr alloy undergoes deformation-induced ? phase transformation and exhibits the increase in the Young's modulus by deformation.
KW - Beta-type titanium alloy
KW - Biomaterial
KW - Deformation-induced phase transformation.
KW - Omega phase
KW - Young's modulus
UR - http://www.scopus.com/inward/record.url?scp=84862943595&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84862943595&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.706-709.557
DO - 10.4028/www.scientific.net/MSF.706-709.557
M3 - Conference contribution
AN - SCOPUS:84862943595
SN - 9783037853030
T3 - Materials Science Forum
SP - 557
EP - 560
BT - THERMEC 2011
PB - Trans Tech Publications Ltd
T2 - 7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
Y2 - 1 August 2011 through 5 August 2011
ER -