Additive manufacturing of shape memory alloys: A review with emphasis on powder bed systems

By Alireza Alagha, Shahadat Hussain, W. Zaki. 2021

146 citations recorded by the source corpus.

Abstract The ability of shape memory alloys (SMAs) to recover inelastic strains larger than any other metallic alloy has prompted their use in a wide range of applications. However, for the most common SMAs, including NiTi and Cu-based systems, fabrication using conventional means raises important challenges, including poor workability and potentially high tool wear. Additive manufacturing offers a direct answer to these challenges by eliminating the need for tooling and allowing the production of samples of complex geometries directly from computer-aided designs. The present work provides a comprehensive review of additive manufacturing applied to various SMA systems, with focus on the influence of process parameters and heat-treatment on the microstructure, printability, and the structural and functional behavior of additively fabricated samples.

Subfields: Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/cedcd7f0ec4f69a17edca4bde9ce535327774a07

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In Mechanical Engineering

1. Jinliang Zhang
2. B. Song
3. Yusheng Shi

Citations in the corpus

• Laser powder bed fusion additive manufacturing of NiTi shape memory alloys: a review (2023, background): “The SE process is as follows: When the temperature is higher than Af, the austenite phase transforms into detwins martensite (B2-B19′) at a certain stress level, and the martensite transforms back to austenite (B19′-B2) after unloading, resulting in shape recovery ultimately [8, 52, 74, 75].”