DataVXEmerging Materials ResearchPaper
journal article·2026-07-28

Design, preparation and printability of Ni-Co-Mn-Al-Y shape memory alloy powder for LAM

Wuming Jia, Jialu Chen, Enyu Yang, Xiuyan Chen, Guangrui Zhang, Suiyuan Chen

Emerging Materials Research
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Source abstract

Abstract

Laser additive manufacturing (LAM) is a new and effective method to prepare magnetic shape memory alloys (MSMAs) with complex structures, but magnetic shape memory alloy powders suitable for LAM need to be developed. In this study, a new Ni-Co-Mn-Al-Y alloy composition was developed, and the alloy powder was prepared by vacuum induction melting gas atomization, and the alloy samples were prepared by LAM. The results showed that the best comprehensive characteristic of Ni-Co-Mn-Al-Y alloy powder was obtained at the final melting temperature of 1898 K and the atomization pressure of 11.0 MPa, with a particle size range of 1–120 μm, 98.9 ± 0.1% sphericity, 1.8% hollow sphere rate, flowability of 26.2 ± 0.4 s/50 g, and apparent density of 4.1 ± 0.01 g/cm3. The influence of atomization pressure on powder morphology is mainly due to the atomization pressure on the collision of droplets and the interaction between droplets and airflow. The Ni-Co-Mn-Al-Y alloy prepared by LAM underwent a reversible martensitic transformation after heat treatment, exhibiting an adiabatic temperature change of −1.7 K at a high temperature of 400 K. The alloy compositions, powdering process, and forming process can be used as a reference for the preparation of high-performance MSMAs by LAM.
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Research context

Metals & alloysMaterials processing

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Northeastern University Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Key Laboratory for Laser Application Technology of Liaoning Province. School of Materials and Engineering, , Shenyang, ; School of Physical Science and Technology, Shenyang Normal University, Shenyang, China; Shi-changxu Innovation Center for Advanced Materials, Superalloys Division, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China

Northeastern University Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Key Laboratory for Laser Application Technology of Liaoning Province. School of Materials and Engineering, , Shenyang, ; Experimental Center, Shenyang Institute of Science and Technology, Shenyang, China

Shenyang Normal University School of Physical Science and Technology, , Shenyang,

Chinese Academy of Sciences Shi-changxu Innovation Center for Advanced Materials, Superalloys Division, Institute of Metal Research, , Shenyang,

Northeastern University Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Key Laboratory for Laser Application Technology of Liaoning Province. School of Materials and Engineering, , Shenyang,

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