TY - GEN
T1 - Fabrication of a high performance Ti alloy implant for an artificial hip joint
AU - Jung, Taek Kyun
AU - Abumiya, Tadasu
AU - Masahashi, Noya
AU - Kim, Mok Soon
AU - Hanada, Shuji
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2009
Y1 - 2009
N2 - A new fabrication process of a stem for an artificial hip joint has been investigated to improve mechanical properties and to reduce both the fabrication cost and consumption of expensive Ti alloys by swaging and die-forging into near-net-shape at room temperature, followed by local heat treatment and precise machining. In this study metastable β Ti-Nb-Sn alloys consisting of non-cytotoxic elements (biocompatible Ti alloys) were used for biomedical applications. It is found that swaging at both ends of a rod before die-forging saves material consumption by approximately 50% in comparison with turning, and enhances subsequent age-hardening. In addition the cold die-forging enables the fabrication costs to decrease. It is suggested that high strength of higher than 1100 MPa in the proximal part connected to a stem head and low Young's modulus of less than 60 GPa in the distal part implanted in a femur can be obtained simultaneously in advanced Ti alloy stems.
AB - A new fabrication process of a stem for an artificial hip joint has been investigated to improve mechanical properties and to reduce both the fabrication cost and consumption of expensive Ti alloys by swaging and die-forging into near-net-shape at room temperature, followed by local heat treatment and precise machining. In this study metastable β Ti-Nb-Sn alloys consisting of non-cytotoxic elements (biocompatible Ti alloys) were used for biomedical applications. It is found that swaging at both ends of a rod before die-forging saves material consumption by approximately 50% in comparison with turning, and enhances subsequent age-hardening. In addition the cold die-forging enables the fabrication costs to decrease. It is suggested that high strength of higher than 1100 MPa in the proximal part connected to a stem head and low Young's modulus of less than 60 GPa in the distal part implanted in a femur can be obtained simultaneously in advanced Ti alloy stems.
KW - Artificial hip joint
KW - Biocompatible titanium alloy
KW - Cold dieforging
KW - Strength
KW - Young's modulus
UR - http://www.scopus.com/inward/record.url?scp=70349413298&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349413298&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.620-622.591
DO - 10.4028/www.scientific.net/MSF.620-622.591
M3 - Conference contribution
AN - SCOPUS:70349413298
SN - 0878493271
SN - 9780878493272
T3 - Materials Science Forum
SP - 591
EP - 594
BT - 10th International Symposium on Eco-Materials Processing and Design, ISEPD 2009
PB - Trans Tech Publications Ltd
T2 - 10th International Symposium on Eco-Materials Processing and Design, ISEPD 2009
Y2 - 13 January 2009 through 15 January 2009
ER -