Phase Formation, Thermal Stability and Mechanical Properties of a Cu-Al-Ni-Mn Shape Memory Alloy Prepared by Selective Laser Melting

Materials Research

Piter Gargarella¹  Cláudio Shyinti Kiminami¹  Eric Marchezini Mazzer¹  Régis Daniel Cava¹  Leonardo Albuquerque Basilio¹  Claudemiro Bolfarini¹  Walter José Botta¹  Jürgen Eckert¹  Tobias Gustmann¹  Simon Pauly¹ 

关键词: selective laser melting;    shape memory alloys;    Cu-based alloys;    additive manufacturing;   

DOI  :  10.1590/1516-1439.338914

来源: SciELO

【 摘 要 】

Selective laser melting (SLM) is an additive manufacturing process used to produce parts with complex geometries layer by layer. This rapid solidification method allows fabricating samples in a non-equilibrium state and with refined microstructure. In this work, this method is used to fabricate 3 mm diameter rods of a Cu-based shape memory alloy. The phase formation, thermal stability and mechanical properties were investigated and correlated. Samples with a relative density higher than 92% and without cracks were obtained. A single monoclinic martensitic phase was formed with average grain size ranging between 28 to 36 μm. The samples exhibit a reverse martensitic transformation temperature around 106 ± 2 °C and a large plasticity in compression (around 15±1%) with a typical “double-yielding” behaviour.

【 授权许可】

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