AlFeCoNiMo0.2高熵合金加工图中流动不稳定性判据的比较研究

IF 1.2 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Philosophical Magazine Letters Pub Date : 2022-10-03 DOI:10.1080/09500839.2022.2129109

Jianlin Li, Jinke Han, Fance Song, Haoyu Zhang, Ge Zhou, Lijia Chen, Xue Cao

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引用次数: 2

摘要

摘要采用Gleeble-3800热模拟试验机对高熵合金进行了热压缩实验研究。根据Prasad、Gegel、Malas和Murty不稳定性标准，分析了AlFeCoNiMo0.2 HEA的热变形行为和相关参数的物理意义。构建了不同条件下不同失稳标准的处理图。温度范围为1070°C–1150°C，应变速率范围为0.001–0.1的区域 s−1和>40%的平均功率耗散率不具有流动不稳定性；因此，该畴适用于AlFeCoNiMo0.2 HEA变形过程。通过微观组织分析，确定最佳成形区的变形机制为动态再结晶。

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A comparative study of flow instability criteria in the processing map of AlFeCoNiMo0.2 high-entropy alloys

ABSTRACT High-entropy alloys (HEAs) were studied via hot compression experiments using a Gleeble-3800 thermal simulation tester. The hot deformation behaviour of an AlFeCoNiMo0.2 HEA and the physical significance of the associated parameters were analyzed according to the Prasad, Gegel, Malas, and Murty instability criteria. Processing maps of different instability criteria under different conditions were constructed. The domain corresponding to a temperature range of 1070°C–1150°C with a strain rate range of 0.001–0.1 s−1 and average power dissipation rates of >40% did not feature flow instability; thus, this domain is appropriate for the AlFeCoNiMo0.2 HEA deformation process. Through microstructure analysis, it was determined that the deformation mechanism in the optimal forming region is dynamic recrystallization.

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来源期刊

Philosophical Magazine Letters 物理-物理：凝聚态物理

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

2.7 months

期刊介绍： Philosophical Magazine Letters is the rapid communications part of the highly respected Philosophical Magazine, which was first published in 1798. Its Editors consider for publication short and timely contributions in the field of condensed matter describing original results, theories and concepts relating to the structure and properties of crystalline materials, ceramics, polymers, glasses, amorphous films, composites and soft matter. Articles emphasizing experimental, theoretical and modelling studies on solids, especially those that interpret behaviour on a microscopic, atomic or electronic scale, are particularly appropriate. Manuscripts are considered on the strict condition that they have been submitted only to Philosophical Magazine Letters , that they have not been published already, and that they are not under consideration for publication elsewhere.