Ti deficiency and its effect on synthesizing all-d-metal Heusler alloy powders via mechanical alloying

IF 4.8 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization Pub Date : 2025-04-17 DOI:10.1016/j.matchar.2025.115059

Hongguo Zhang , Jinhao Shi , Zhentao Zhang , Xiangming Wang , Ming Yue

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Abstract

This study proposes and realizes the synthesis of powder and bulk Ni-Co-Mn-Ti-based all-d-metal Heusler alloys through mechanical alloying and powder metallurgy. Ti deficiency was found and recognized as a critical factor for the phase formation in similar compounds. By adjusting the Ti content, alloying and heat treatment process, L1₀, B2, and 5 M martensitic phases can be obtained. Martensitic phase transformation temperatures can also be adjusted through various factors involved in the process. The absence of a metamagnetic transition up to 3 T was observed in the bulk samples, which is related to the small magnetization difference during the phase transformation. A maximum magnetic entropy change comparable to alloys produced via rapid quenching was achieved. The present method is an effective and flexible route to fabricating powders of all-d-metal alloys with tailored structural and magnetic properties. It can serve as a pre-process for advanced manufacturing and provide new phase control choices in related systems.

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Ti缺乏及其对机械合金化合成全金属Heusler合金粉末的影响

本研究提出并实现了通过机械合金化和粉末冶金法制备粉状和块状ni - co - mn - ti基全金属Heusler合金。Ti缺乏被发现并被认为是类似化合物相形成的关键因素。通过调整Ti含量、合金化和热处理工艺，可获得L10、B2和5m马氏体相。马氏体相变温度也可以通过过程中涉及的各种因素来调节。在整体样品中没有观察到高达3t的超磁转变，这与相变过程中较小的磁化差有关。实现了与快速淬火合金相媲美的最大磁熵变化。该方法是一种有效而灵活的制备具有定制结构和磁性能的全金属合金粉末的方法。它可以作为先进制造的预处理过程，并为相关系统提供新的相位控制选择。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.