msepostdoc-list Seminar Reminder for Chia-Hsiu Chang's MS Final. Seminar Tuesday, May 29, in ARMS 1021, at 8:30 a.m.; Exam Same day at 9:30, in ARMS 2326

[Son, Rosemary E]

Please consider attending the following:

MATERIALS ENGINEERING
SEMINAR


"Solid-Solution Strengthening in FCC Concentrated Complex Alloys"


By
Chia-Hsiu Chang
Purdue MSE M.S. Final Exam

Advisor: Professor Michael S. Titus



ABSTRACT


Concentrated complex alloys (CCAs) were recently proposed as a novel class of new alloys, and they are defined as alloys composed of four or more alloying elements without a majority concentration or "base" element, for example Co1Fe1Mn1Ni1. Oftentimes, researchers aim to synthesize CCAs exhibiting a single solid-solution phase (e.g. fcc or bcc) because of the significant solid-solution strengthening provided by the high concentration of many solute elements. However, the strengthening mechanisms of CCAs are not clear at present. A new theory for predicting the yield strength of fcc CCAs has recently developed. Our study hypothesizes that CCAs could be treated as pseudo-binary alloys, in which the "solvent" is a given CCA and the solute is the final alloying element, and comparisons between predicted and experimental results based on the new model will be discussed.
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Date: Tuesday, May 29, 2018

Time: 8:30 A.M.
Place: ARMS 1021

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