Microstructural Evolution and Functional Properties of Fe-Mn-Al-Ni Shape Memory Alloy Processed by Selective Laser Melting

In the current study, a Fe-Mn-Al-Ni shape memory alloy is processed by additive manufacturing for the first time. Microstructural evolution upon processing is strongly affected by thermal gradients and solidification velocity and, thus, by processing parameters and the actual specimen geometry. By s...

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Bibliographic Details
Published inMetallurgical and materials transactions. A, Physical metallurgy and materials science Vol. 47; no. 6; pp. 2569 - 2573
Main Authors Niendorf, Thomas, Brenne, Florian, Krooß, Philipp, Vollmer, Malte, Günther, Johannes, Schwarze, Dieter, Biermann, Horst
Format Journal Article
LanguageEnglish
Published New York Springer US 01.06.2016
Springer Nature B.V
Subjects
Alloys
Characterization and Evaluation of Materials
Chemistry and Materials Science
Communication
Materials Science
Mechanical properties
Metallic Materials
Metallurgy
Microstructure
Nanotechnology
Structural Materials
Surfaces and Interfaces
Thin Films
Abnormal Grain Growth
Shape Memory Property
Shape Memory Alloy
Selective Laser Melting
Selective Laser Melting Processing
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Summary:In the current study, a Fe-Mn-Al-Ni shape memory alloy is processed by additive manufacturing for the first time. Microstructural evolution upon processing is strongly affected by thermal gradients and solidification velocity and, thus, by processing parameters and the actual specimen geometry. By single-step solutionizing heat treatment pronounced grain growth is initiated leading to microstructures showing good reversibility. The compressive stress–strain response revealed maximum reversible pseudo-elastic strain of about 7.5 pct. Critical steps toward further optimization of additively manufactured Fe-Mn-Al-Ni shape memory alloys are discussed.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-016-3412-z