Gravity-Assisted SHS Metallurgy of Cast High-Entropy Mo–Nb–Ta–(Cr,V,Zr,Hf) Alloys

IF 0.5 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2025-01-20 DOI:10.3103/S1061386224700298

V. N. Sanin, D. M. Ikornikov, A. O. Sivakova, D. Yu. Kovalev, O. A. Golosova

引用次数: 0

Abstract

Cast Mo–Nb–Ta–(Cr,V,Zr,Hf) refractory high-entropy alloys were first prepared via gravity-assisted SHS metallurgy. It was shown that the ingots crystallize from the liquid state, in which a homogeneous distribution of constituting elements is provided. The phase composition of synthesized RHEA ingots was revealed to be doped component dependent. Combined reduction of metals of V (Nb, Ta, V) and VI (Cr, Mo) groups formed single-phase alloys with a bcc crystal structure. MoNbTaCr alloys doped with Zr or Hf having hexagonal crystal structure were found to consist of fcc and hcp phases in addition to bcc solid solution.

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重力辅助SHS冶金铸造高熵Mo-Nb-Ta - （Cr，V,Zr,Hf）合金

采用重力辅助SHS法首次制备了Mo-Nb-Ta - （Cr，V,Zr,Hf）难熔高熵合金。结果表明，钢锭是由液态结晶而成，在液态中组成元素分布均匀。结果表明，合成的RHEA锭的相组成与掺杂组分有关。V族（Nb, Ta， V）和VI族（Cr, Mo）复合还原形成具有bcc晶体结构的单相合金。经Zr或Hf掺杂的MoNbTaCr合金具有六方晶型结构，除bcc固溶体外，还含有fcc相和hcp相。

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来源期刊

International Journal of Self-Propagating High-Temperature Synthesis MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

33.30%

发文量

期刊介绍： International Journal of Self-Propagating High-Temperature Synthesis is an international journal covering a wide range of topics concerned with self-propagating high-temperature synthesis (SHS), the process for the production of advanced materials based on solid-state combustion utilizing internally generated chemical energy. Subjects range from the fundamentals of SHS processes, chemistry and technology of SHS products and advanced materials to problems concerned with related fields, such as the kinetics and thermodynamics of high-temperature chemical reactions, combustion theory, macroscopic kinetics of nonisothermic processes, etc. The journal is intended to provide a wide-ranging exchange of research results and a better understanding of developmental and innovative trends in SHS science and applications.