Synthesis of Multi-component Alloys (Co20Cr20Fe20Mn20Ti20and Co20Cr20Fe20Mn20Ti20Ni20) by Mechanical Alloying Route

Autor: Datta, Turin, Manna, Indranil, Majumdar, Jyotsna Dutta
Zdroj: High Entropy Alloys & Materials; March 2024, Vol. 2 Issue: 1 p1-15, 15p
Abstrakt: In this article, equiatomic multicomponent alloys with the compositions of Co20Cr20Fe20Mn20Ti20and Co20Cr20Fe20Mn20Ti20Ni20were synthesized by mechanical alloying with 5, 10 and 15 h of milling. During mechanical alloying, there is refinement of particles up to 10 h of milling following which there is agglomeration of particles till 15 h of milling in Co20Cr20Fe20Mn20Ti20whereas, for Co20Cr20Fe20Mn20Ti20Ni20, the phenomenon of cold-welding predominated up to 10 h of milling following which refinement of particles were observed till 15 h of milling due to fragmentation. X-ray diffraction technique confirmed the presence of body-centered cubic and face-centered cubic phases in both the alloys. There is a considerable decrease in crystallite size and increment in the lattice strain with increase in the milling duration for both the alloys. Both the alloys exhibited nanocrystalline nature after 15 h of milling which was confirmed by high resolution transmission electron microscopy.
Databáze: Supplemental Index