Grain growth and the Hall–Petch relationship in a high-entropy FeCrNiCoMn alloy
2012; Elsevier BV; Volume: 68; Issue: 7 Linguagem: Inglês
10.1016/j.scriptamat.2012.12.002
ISSN1872-8456
AutoresW.H. Liu, Yuan Wu, Junyang He, T.G. Nieh, Zhaoping Lü,
Tópico(s)Advanced materials and composites
ResumoA 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.
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