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The effect of structural matching of crystalline lattices in the formation of nanocrystals in the amorphous phase
Materials Letters ( IF 3 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.matlet.2020.127431
N. Volkov , G. Abrosimova , A. Aronin

Abstract The dependence of nanocrystal formation in the amorphous phase on the crystal structure of alloying components is studied. The formation of α-phase nanocrystals was found to depend on the concentration of alloying elements with the bcc lattice, and in some cases, the presence of two elements with this structure is necessary. The fraction of the nanocrystalline phase depends on the chemical composition of the alloy. It is found that in the alloys studied, at least 7 at.% Fe and more than 1 at% Nb are necessary for the formation of bcc nanocrystals. When niobium is replaced with titanium, the formation of the bcc phase is possible only at high Fe content. The formation of nanocrystals with the bcc lattice can depend on both the presence of a component with the same lattice and the presence of an element that contributes to the expansion of the region of α phase existence in the phase equilibrium diagram.

中文翻译:

晶格结构匹配对非晶相纳米晶形成的影响

摘要 研究了非晶相中纳米晶形成对合金成分晶体结构的依赖性。发现 α 相纳米晶体的形成取决于具有 bcc 晶格的合金元素的浓度,并且在某些情况下,具有这种结构的两种元素的存在是必要的。纳米晶相的比例取决于合金的化学成分。发现在所研究的合金中,至少 7 at.% Fe 和超过 1 at% Nb 是形成 bcc 纳米晶体所必需的。当铌被钛取代时,只有在高铁含量下才有可能形成体心立方相。
更新日期:2020-04-01
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