通过选择性激光熔化制造的铜铝锰形状记忆合金的微观结构、相变行为和形状记忆响应的改变

IF 4.8 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Materials Characterization Pub Date : 2024-09-21 DOI:10.1016/j.matchar.2024.114398

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引用次数: 0

摘要

本文采用选择性激光熔化（SLM）技术成功制备了几乎无缺陷的铜铝锰 SMA。显微组织结果表明，在制备的试样中只检测到一种热诱导马氏体，而工艺参数对相变行为起着至关重要的作用。该合金的极限拉伸强度为 820 兆帕，伸长率为 11.5%。此外，在抗压应变不超过 8 % 的情况下，该合金具有较高的形状记忆响应，即形状恢复率为 91.4 %-99.6 %，形状记忆应变为 2.59 %-5.46 %。

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Altered microstructure, phase transformation behaviors and shape memory response of CuAlMn shape memory alloys fabricated by selective laser melting

In this paper, nearly defect-free CuAlMn SMAs were successfully fabricated by selected laser melting (SLM). The result of microstructure show that only one type of thermal-induced martensite was detected in the prepared specimens, and the process parameters play a vital role in phase transformation behaviors. The alloy shows excellent ultimate tensile strength of 820 MPa and elongation of 11.5 %. Furthermore, the high shape memory response, i.e. shape recovery rate of 91.4 %–99.6 %, shape memory strain of 2.59 %–5.46 %, was presented under compressive strain not exceeding 8 %.

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来源期刊

Materials Characterization 工程技术-材料科学：表征与测试

CiteScore

7.60

自引率

8.50%

发文量

746

审稿时长

36 days

期刊介绍： Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials. The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal. The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include: Metals & Alloys Ceramics Nanomaterials Biomedical materials Optical materials Composites Natural Materials.