2015
DOI: 10.1016/j.intermet.2015.06.021
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An assessment on the future development of high-entropy alloys: Summary from a recent workshop

Abstract: a b s t r a c tThere is increasing interest in both relating the mechanical behavior of high-entropy alloys to their microstructural evolution and in their development for various applications. A special two-day international workshop on the above topic was held in Guiyang, China, in December 2014. The workshop gathered scientists and engineers to exchange information on recent progress in high-entropy alloys, to discuss the scientific issues and challenges to foster international collaborations, and to identi… Show more

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Cited by 385 publications
(145 citation statements)
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“…In recent years, studies have shown that phase formation in a large variety of CCAs is driven by enthalpy considerations; rather than entropy [1,2]. Under the circumstances, several alloy compositions are susceptible to secondary phase formation, thus allowing the design of precipitation-hardenable CCA compositions [3][4][5][6]. In most cases the strengthening precipitate nucleates homogeneously within the parent matrix, where nucleation involves a complex interplay among chemical, elastic (due to misfit strains) and interfacial energies [7,8].…”
Section: Main Textmentioning
confidence: 99%
“…In recent years, studies have shown that phase formation in a large variety of CCAs is driven by enthalpy considerations; rather than entropy [1,2]. Under the circumstances, several alloy compositions are susceptible to secondary phase formation, thus allowing the design of precipitation-hardenable CCA compositions [3][4][5][6]. In most cases the strengthening precipitate nucleates homogeneously within the parent matrix, where nucleation involves a complex interplay among chemical, elastic (due to misfit strains) and interfacial energies [7,8].…”
Section: Main Textmentioning
confidence: 99%
“…The recently emerging high-entropy alloys (HEAs), however, provide a novel alloying strategy that significantly expands the scope of the conventional alloy design. [3][4][5][6][7][8][9][10][11][12] HEAs typically consist of at least four principal metallic elements in near-equiatomic ratios and therefore have a higher configuration entropy than that in conventional alloys. Due to their unique features, including high softening resistance at elevated temperatures, the slow diffusion kinetics, and high oxidation resistance, HEAs naturally possess the advantages to be considered as new types of high-temperature alloys.…”
Section: Introductionmentioning
confidence: 99%
“…Attributed to the high mixing configurational entropy, HEAs always remain as stable crystal structures, such as body-centered cubic (BCC) [3], face-centered cubic (FCC) [4,5], or hexagonal close-packed (HCP) [6], rather than complex intermetallic phases [5,7,8]. The definition and rules governing the phase formation in HEAs are a matter of great interest and debate at present [9,10]. However, the structure of HEA solid solutions are significantly different from those of Hume-Rothery terminal solid solutions, and this offers many potential applications, including tools, molds, and mechanical parts [11].…”
Section: Introductionmentioning
confidence: 99%