|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location Specific, Processing-Microstructure-Property-Relationships III
||A-12: Enhancement of Density and Pseudoelasticity of a Cu-Al-Ni-Mn Shape-memory Alloy Produced by Selective Laser (Re)Melting
||Tobias Gustmann, Holger Schwab, Uta Kühn, Simon Pauly
|On-Site Speaker (Planned)
There is a major interest in Cu-based shape-memory alloys mainly due to their low cost and promising shape-memory properties.Yet,the applicability of these alloys is limited by their inherent brittleness in the coarse-grained polycrystalline state.Here,selective laser melting (SLM) was used to tailor the microstructure of the shape-memory alloy Cu-Al-Ni-Mn.The SLM process is capable of producing fully martensitic samples with a reduced grain size and a relative density of about 99%.The focus of the present work is to optimize the density through a remelting step.Every powder layer processed by SLM was remelted and the relative density increases to values of about 99.5%.The microstructure,martensitic transformation and mechanical properties strongly correlate with the energy introduced into the material. The remelting procedure proves to be an efficient tool not only to prepare samples with an increased density and enhanced deformability but also to tailor the grain size and with it the strain recovery.
||Planned: Supplemental Proceedings volume