Effect of free energy on the solid solubility and magnetic behaviour of a mechanically alloyed nanocrystalline Cu–Co–Ti alloy

IF 1.9 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Sumit Chabri, Sayan Samanta, Goutam Roy, Akhtarujjaman Sarkar, Supriya Bera
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Abstract

This study aimed to exploit the potential of the ball-milling method to create a super-saturated solid solution in an immiscible Cu–Co system. The nanocrystalline binary 50Cu–50Co (at%) and ternary 50Cu–40Co–10Ti (at%) alloys produced by ball milling for up to 50 h and afterwards isothermal annealing are examined for microstructure and magnetic characteristics. Ti addition’s effects on solid solubility of Co in Cu morphology and magnetic characteristics of the systems were evaluated using cutting-edge techniques, such as X-ray diffraction, differential thermal analyzer, high-resolution transmission electron microscopy and superconducting quantum interference device. The thermodynamic stability of the solutions was assessed using DTA measurement at temperatures ranging from 450 to 650°C. The magnetic value of the ternary alloy after annealing increased up to 550°C before declining to 650°C.

Abstract Image

Abstract Image

自由能对机械合金化纳米铜-铜-钛合金固溶性和磁性的影响
摘要 本研究旨在利用球磨法的潜力,在不相溶的铜-钴体系中形成超饱和固溶体。通过球磨长达 50 小时,然后进行等温退火,制得了纳米晶二元 50Cu-50Co (at%) 和三元 50Cu-40Co-10Ti (at%) 合金,并对其微观结构和磁性特征进行了研究。利用 X 射线衍射、差热分析仪、高分辨率透射电子显微镜和超导量子干涉装置等尖端技术,评估了 Ti 添加对 Co 在 Cu 中固溶性的影响,以及体系的形态和磁性特征。在 450 至 650°C 的温度范围内,使用 DTA 测量法评估了溶液的热力学稳定性。退火后三元合金的磁性值上升到 550°C,然后下降到 650°C。
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来源期刊
Bulletin of Materials Science
Bulletin of Materials Science 工程技术-材料科学:综合
CiteScore
3.40
自引率
5.60%
发文量
209
审稿时长
11.5 months
期刊介绍: The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.
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