A new concept of hip joint stem and its fabrication using metastable TiNbSn alloy

被引：20

作者：

Jung, Taek-Kyun ^{[1
]}

Lee, Hyo-Soo ^{[1
]}

Semboshi, Satoshi ^{[2
]}

Masahashi, Naoya ^{[2
]}

Abumiya, Tadasu ^{[2
]}

Hanada, Shuji ^{[2
]}

机构：

[1] Korea Inst Ind Technol, Inchon 406840, South Korea

[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2012年 / 536卷

关键词：

TiNbSn alloys; Cold groove rolling; Cold swaging; Local heating; Young's modulus; Tensile strength; LOW YOUNGS MODULUS; MECHANICAL-PROPERTIES; TITANIUM-ALLOYS;

D O I：

10.1016/j.jallcom.2011.12.077

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cold worked (Ti-35%Nb)-4%Sn alloy rods were locally heated to investigate the gradation of mechanical properties and develop an advanced Ti alloy stem for application as an artificial hip joint. Cold groove rolling was found to decrease Young's modulus, but subsequent cold swaging increased Young's modulus and tensile strength. Heating one edge of the cold worked rods resulted in the tensile strength and Young's modulus increasing significantly in the heated zone; the increase varied depending on the distance from the heated zone. The increase in tensile strength was attributed to the omega precipitation and the additional microstructure refinement by reverse transformation of alpha '' to beta. We could successfully fabricate an advanced hip joint stem with a tensile strength of 1.3 GPa in the proximal portion and Young's modulus of 43 GPa in the distal portion. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：S582 / S585

页数：4

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