TY - JOUR
T1 - Alloy designs of high-entropy crystalline and bulk glassy alloys by evaluating mixing enthalpy and delta parameter for quinary to decimal equi-atomic alloys
AU - Takeuchi, Akira
AU - Amiya, Kenji
AU - Wada, Takeshi
AU - Yubuta, Kunio
AU - Zhang, Wei
AU - Makino, Akihiro
PY - 2014
Y1 - 2014
N2 - The values of mixing enthalpy (ΔHmix) and Delta parameter (δ) were calculated with 73 elements from Miedema's model for multicomponent equi-atomic alloys to investigate the possibilities of the alloys to be formed into high-entropy (H-E) alloys or high-entropy bulk metallic glasses (HE-BMGs). The equi-atomic alloys from about 15 million (73C5) quinary to 621 billion (73C10) decimal systems were evaluated by referring to a ΔHmixδ diagram for zones S and B's for H-E alloys with disordered solid solutions and BMGs, respectively, reported by Zhang et al. The results revealed that the number of quinary equi-atomic alloys plotted in zone S is 28405 (∼0.19% in 73C5), whereas those in zones B1 and B2 for conventional and Cu- and Mg-based BMGs, respectively, were 1036385 and 21518 (∼6.90 and ∼0.14%), respectively. This kind of statistical approach using ΔHmixδ diagram will lead to finding out unprecedented H-E alloys and HE-BMGs.
AB - The values of mixing enthalpy (ΔHmix) and Delta parameter (δ) were calculated with 73 elements from Miedema's model for multicomponent equi-atomic alloys to investigate the possibilities of the alloys to be formed into high-entropy (H-E) alloys or high-entropy bulk metallic glasses (HE-BMGs). The equi-atomic alloys from about 15 million (73C5) quinary to 621 billion (73C10) decimal systems were evaluated by referring to a ΔHmixδ diagram for zones S and B's for H-E alloys with disordered solid solutions and BMGs, respectively, reported by Zhang et al. The results revealed that the number of quinary equi-atomic alloys plotted in zone S is 28405 (∼0.19% in 73C5), whereas those in zones B1 and B2 for conventional and Cu- and Mg-based BMGs, respectively, were 1036385 and 21518 (∼6.90 and ∼0.14%), respectively. This kind of statistical approach using ΔHmixδ diagram will lead to finding out unprecedented H-E alloys and HE-BMGs.
KW - Alloy Design
KW - Atomic size difference
KW - Bulk metallic glass
KW - Configurational entropy
KW - High-entropy alloy
KW - Mismatch entropy
KW - Mixing enthalpy
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U2 - 10.2320/matertrans.M2013352
DO - 10.2320/matertrans.M2013352
M3 - Article
AN - SCOPUS:84892615791
VL - 55
SP - 165
EP - 170
JO - Materials Transactions
JF - Materials Transactions
SN - 1345-9678
IS - 1
ER -