Theses and Dissertations

Date of Award

8-2021

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Manufacturing Engineering

First Advisor

Dr. Jianzhi Li

Second Advisor

Dr. Anil Srivastava

Third Advisor

Dr. Farid Ahmed

Abstract

Primary objective of this research was to study the correlation between energy parameters (temperature, time and pressure) of spark plasma sintering (SPS) and design/structural properties (uniform distribution of elements, sever lattice distortion, density), indirectly proving consolidation of a stable High-entropy alloy (HEA) that consists of minimum of five elements. Therefore, powders of five principal elements (CuCrFeNiTi) and one minor element (Al) in near equimolar ratios were used for HEA consolidation using SPS but without mechanical alloying. Overall results demonstrated that the HEA was not generated using heterogenous solution of CuCrFeNiTiAl using SPS. This suggests that the mechanical alloying of CuCrFeNiTiAl elements was needed for making homogenous solution, before using SPS for HEA consolidation. Although density, energy dispersion spectroscopy and X-Ray diffraction analyses showed the possibility of formation of FCC and BCC structures, further research with replicated trials on the optimization of SPS process using combinations of different energy settings is needed to confirm these findings.

Comments

Copyright 2021 Yash P. Patil. All Rights Reserved.

https://go.openathens.net/redirector/utrgv.edu?url=https://www.proquest.com/dissertations-theses/situ-alloying-cucrfenitial-high-entropy-alloy/docview/2595646608/se-2?accountid=7119

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