Transformation behavior and superelastic properties of Ti-Ni-Ag scaffolds prepared by sintering of alloy fibers

被引：7
作者：
Li, Shuanglei [1 ,2 ]
Kim, Yeon-wook [3 ]
Nam, Tae-hyun [1 ,2 ]
机构：
[1] Gyeongsang Natl Univ, Sch Mat Sci & Engn, 900 Gazwadong, Jinju 52828, Gyeongnam, South Korea
[2] Gyeongsang Natl Univ, RIGET, 900 Gazwadong, Jinju 52828, Gyeongnam, South Korea
[3] Keimyung Univ, Dept Mat Engn, 1000 Shindang Dong, Daegu 704701, South Korea
来源：
SCRIPTA MATERIALIA | 2018年 / 153卷
基金：
新加坡国家研究基金会;
关键词：
Ti-Ni-Ag alloy; Rapid solidification; Sintering; Porous material; Superelasticity; SHAPE-MEMORY; MECHANICAL-PROPERTIES; NITINOL; SILVER;
D O I：
10.1016/j.scriptamat.2018.02.003
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Ti-503Ni-0.7Ag (at.%) scaffolds were prepared by sintering of rapidly solidified alloy fibers. The sintered scaffolds possessed high porosity of 80% and large pores of 150-600 mu m in size. The yield strength of the scaffold after annealed at 723 K for 3.6 ks was about 2.4 MPa. Ti-Ni-Ag scaffolds had an elastic modulus of 0.8 GPa, similar to that of spongy bone, and exhibited good superelasticity with total recovery strain of 3.4% when 4% pre-strain was loaded at human body temperature. Stable superelastic behavior with complete shape recovery was observed during cyclic deformation in scaffolds. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：23 / 26
页数：4
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