Abstract Self-diffusion in ordered pseudo-binary multicomponent aluminides is investigated. Equiatomic substitution of transition metal sublattice in aluminides is performed to produce multicomponent alloys Al(CoNi), Al(FeNi), Al(CoFe), Al(CoFeNi), Al(CoFeMnNi) and Al(CoCuFeMnNi). X-ray diffraction and electron microscopy confirm the presence of single phase ordered BCC structure for all the alloys. Radioactive isotopes of 57Co, 59Fe, 54Mn, 63Ni and 65Zn are used to measure the tracer diffusion coefficients in all the alloys at 1273 K. The influence of multi-principal element alloying of the transition metal sublattice on self-diffusion is mapped to its impact on the defect structure in these ordered alloys.

中文翻译：

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有序伪二元多组分铝化物中的示踪剂扩散

摘要 研究了有序伪二元多组分铝化物中的自扩散。在铝化物中进行过渡金属亚晶格的等原子取代以生产多组分合金 Al(CoNi)、Al(FeNi)、Al(CoFe)、Al(CoFeNi)、Al(CoFeMnNi) 和 Al(CoCuFeMnNi)。X 射线衍射和电子显微镜证实所有合金都存在单相有序 BCC 结构。57Co、59Fe、54Mn、63Ni 和 65Zn 的放射性同位素用于测量所有合金在 1273 K 下的示踪扩散系数。过渡金属亚晶格的多主要元素合金化对自扩散的影响映射到其影响关于这些有序合金中的缺陷结构。