Magneto-Mechanics of Magnetic Shape-Memory Crystals With Micropeened Surfaces

作者

Zane Harbison¹ , Gianella Condor² , Ammon Butler² , John Martin² , Shane Palmer² , Paul Lindquist² , Peter Mullner²

1. Columbia University
2. Boise State University

会议/活动

Idaho Conference of Undergraduate Research, July 2022 (虚拟会议)

海报摘要

Nickel-Manganese-Gallium is a prominent MSM crystal that can be strained to 6% of its length. The alloy degrades and breaks after repeated loading, a behavior called fatigue. Bombarding the surface of the material with minuscule glass beads (micropeening) increases the number of loading cycles thousandfold; however, this decreases the maximum strain. In this project, stress and strain were measured before and after micropeening at different pressures to identify a quantitative relationship between process parameters and the dynamic material properties. Preliminary results show that micropeening at 25 psi preserves a large part of the strain while micropeening at 30 psi suppresses most of the strain.

关键词

MSM material, Nickel-Maganese-Gallium, Micropeening, Fatigue life, Stress, Strain

研究领域

Material Sciences

参考文献

1. S. Fähler, Tutorial G, MRS Fall Symposium 2009, Boston, MA, November 29, 2009.

基金

1. National Science Foundation (No. XC-1950305 and NSF-DMR 1710640)

补充材料

1. Video supplementing the poster content.   Download

附加信息

利益冲突

None declared.

数据可用性声明

The datasets generated during and/or analyzed during the current study are available from the corresponding_author author on reasonable request.

知识共享许可协议

Copyright © 2022 Harbison et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.