1. Phase Formation, Thermal Stability and Mechanical Properties of a Cu-Al-Ni-Mn Shape Memory Alloy Prepared by Selective Laser Melting
- Author
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Piter Gargarella, Cláudio Shyinti Kiminami, Eric Marchezini Mazzer, Régis Daniel Cava, Leonardo Albuquerque Basilio, Claudemiro Bolfarini, Walter José Botta, Jürgen Eckert, Tobias Gustmann, and Simon Pauly
- Subjects
selective laser melting ,shape memory alloys ,Cu-based alloys ,additive manufacturing ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
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.
- Published
- 2015
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