Version 1
: Received: 30 May 2022 / Approved: 31 May 2022 / Online: 31 May 2022 (03:12:34 CEST)
How to cite:
Saha, M. Microstructural Evolution of an Intermetallic Phase in a Complex-Concentrated Alloy: A Brief Case Study. Preprints2022, 2022050405. https://doi.org/10.20944/preprints202205.0405.v1
Saha, M. Microstructural Evolution of an Intermetallic Phase in a Complex-Concentrated Alloy: A Brief Case Study. Preprints 2022, 2022050405. https://doi.org/10.20944/preprints202205.0405.v1
Saha, M. Microstructural Evolution of an Intermetallic Phase in a Complex-Concentrated Alloy: A Brief Case Study. Preprints2022, 2022050405. https://doi.org/10.20944/preprints202205.0405.v1
APA Style
Saha, M. (2022). Microstructural Evolution of an Intermetallic Phase in a Complex-Concentrated Alloy: A Brief Case Study. Preprints. https://doi.org/10.20944/preprints202205.0405.v1
Chicago/Turabian Style
Saha, M. 2022 "Microstructural Evolution of an Intermetallic Phase in a Complex-Concentrated Alloy: A Brief Case Study" Preprints. https://doi.org/10.20944/preprints202205.0405.v1
Abstract
In the perspective of designing complex concentrated alloys (CCAs) for structural applications, sigma (σ) phase is important. It is generally known to be an embrittling phase leading to a degradation in the mechanical properties of CCAs. This necessitates detailed investigations on the evolution of σ phase in these alloys. In the present study, an equiatomic CoCrCuMnNi CCA is chosen, in which σ phase appears at 800°C, as reported in a recent publication [1]. To this end, the present investigation aims at understanding the evolution of this phase so that its presence can be controlled for the purpose of preventing degradation in mechanical properties. In the present work, a vacuum arc melted alloy, after homogenisation (at 400°C for 5h), is heat-treated for different times ranging from 1 to 9h at 800°C followed by water quenching. Extensive characterisation has been carried out using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) techniques to understand the sequence of σ phase precipitation at 800°C.
Keywords
σ phase; high entropy alloy; X-Ray Diffraction; Scanning Electron Microscopy; Transmission Electron Microscopy
Subject
Engineering, Mechanical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
