期刊
SCRIPTA MATERIALIA
卷 68, 期 7, 页码 526-529出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2012.12.002
关键词
High-entropy alloy; Grain growth; Grain boundary migration; Hall-Petch effect
类别
资金
- National Natural Science Foundation of China [51010001, 51001009]
- 111 Project [B07003]
- Program for Changjiang Scholars and Innovative Research Team in University
- Fundamental Research Funds for the Central Universities
- US-National Science Foundation [DMR-0905979]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0905979] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [GRANTS:13724234] Funding Source: National Science Foundation
A high-entropy FeCoNiCrMn alloy with a single face-centered cubic phase was synthesized and subsequently annealed at different temperatures to systematically investigate the grain growth behavior. It was observed that the growth kinetics could be described by a power law of 3 and the activation energy for growth was about 321.7 kJ mol(-1). The hardness of the alloys was measured as a function of grain size, and the result was found to follow the classical Hall-Petch strengthening, though with a relatively high hardening coefficient. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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