Influence of SLM on shape memory and compression behaviour of NiTi scaffolds

被引：134

作者：

Dadbakhsh, Sasan ^{[1
]}

Speirs, Mathew ^{[1
]}

Kruth, Jean-Pierre ^{[1
]}

Van Humbeeck, Jan ^{[2
]}

机构：

[1] Katholieke Univ Leuven, Dept Mech Engn, PMA, Leuven, Belgium

[2] Katholieke Univ Leuven, Dept Mat Engn, Leuven, Belgium

来源：

CIRP ANNALS-MANUFACTURING TECHNOLOGY | 2015年 / 64卷 / 01期

关键词：

Selective laser melting (SLM); Shape memory alloy; Porous structure; PORE GEOMETRY; LASER; IMPLANTS; MICROSTRUCTURE; TRANSFORMATION; PARAMETERS; PARTS;

D O I：

10.1016/j.cirp.2015.04.039

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Octahedron-shaped porous scaffolds made from shape memory nickel-titanium (NiTi) were manufactured with different solid volume fractions using selective laser melting (SLM). Various SLM parameters were selected to affect the mechanical behaviour and shape memory response. It was shown that high laser power with high scanning speed (HP) parameters reduced the martensitic transformation temperatures as compared to low laser power low scanning speed (LP) parameters, resulting in an increased pseudoelastic behaviour (due to presence of austenite at room temperature). HP parameters, however, led to a larger geometrical mismatch with the original design and a higher solid volume fraction. The compression behaviours were also analysed and exhibited in correlation with the volume fractions. (C) 2015 CIRP.

引用

页码：209 / 212

页数：4

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