期刊
MATERIALS LETTERS
卷 296, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2021.129888
关键词
Magnetic materials; High-pressure torsion; MnAl
资金
- Russian Science Foundation [18-73-10219]
- Russian Science Foundation [18-73-10219] Funding Source: Russian Science Foundation
The study demonstrates the impact of high-pressure torsion deformation on the structure of ti-MnAl hard magnetic alloy, showing a nonmonotonical behavior between strain and long-range order parameter. A drastic decrease in the long-range order parameter was observed at a true strain of 4.93, attributed to dislocation accumulation, with partial recovery observed for deformations exceeding 4.93.
The aim of this work was to study the effect of high-pressure torsion deformation method on the structure of ti-MnAl hard magnetic alloy. The long-range order parameter a dependence on strain revealed nonmonotonical behavior with a minimum. A drastic fall in the long-range order parameter occurred due to accumulation of dislocations was detected for all samples deformed up to true strain g = 4.93 where the minimum of a = 0.49 was reached. The alloy undergone deformation g > 4.93 was characterized by partial recovery of a. Possible structural factors for the long-range order parameter behavior are discussed in the article. (c) 2021 Elsevier B.V. All rights reserved.
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