Formation of B2 phase and its stability in equiatomic Al-Cu-Fe-Ni-Ti high entropy alloy

被引：0
作者：
Yadav, Yogesh Kumar [1 ]
Shaz, Mohammad Abu [1 ]
Mukhopadhyay, Nilay Krishna [2 ]
Yadav, Thakur Prasad [1 ,3 ]
机构：
[1] Department of Physics, Institute of Science, Banaras Hindu University, Uttar Pradesh, Varanasi
[2] Deptartment of Metallurgical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi
[3] Department of Physics, Faculty of Science, University of Allahabad, Uttar Pradesh, Prayagraj
来源：
Journal of Alloys and Metallurgical Systems | 2024年 / 8卷
关键词：
B2; phase; High energy ball milling; High entropy alloy; Nanocrystalline materials;
D O I：
10.1016/j.jalmes.2024.100137
中图分类号：
学科分类号：
摘要：
In the present investigation, we synthesized a single-phase high-entropy alloy in Al-Cu-Fe-Ni-Ti system by melting of the individual metals using a radiofrequency induction furnace under an argon environment. The as-synthesized alloy showed the formation of a B2-type ordered phase with a lattice parameter of 0.289 nm. The mechanical stability of this single phase high-entropy alloy was investigated under high-energy ball milling. The milling was performed at a speed of 400 rpm for 10, 20, and 40 h under a hexane medium with a ball-to-powder ratio of 40:1. The formation of nano crystallites (∼ 10 nm sizes) body centered cubic (BCC) phase (disordered B2) has been observed after 40 h of ball milling, which has been confirmed by X-ray diffraction and transmission electron microscopic investigation. The equiatomic Al-Cu-Fe-Ni-Ti high entropy alloy structure is observed to be quite stable during mechanical milling up to 40 h; only grain refinements and lattice strain accumulation were observed with milling time. © 2024 The Authors
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