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John E. Morral

Ohio State University

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Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2012

Diffusion Path Theorems for Ternary Diffusion Couples

John E. Morral

A review is given of 17 theorems concerning diffusion paths in ternary diffusion couples published by Kirkaldy and Brown in 1963. An additional 11 theorems are given herein that were taken from work published on diffusion paths after that time. The new theorems are concerned primarily with diffusion paths that result from crossing multiple-phase regions in an interdiffusion zone. The theorems describe a method for classifying microstructural boundaries between the regions and a catalog of diffusion path features that are unique to each type of boundary. In addition, a proposal is given for how to plot diffusion paths in quaternary and higher order systems.

Journal of Phase Equilibria and Diffusion | 2005

An Assessment of Thermodynamic Data for the Liquid Phase in the Al-Rich Corner of the Al-Cu-Si System and Its Application to the Solidification of a 319 Alloy

X. M. Pan; C. Lin; H. D. Brody; John E. Morral

Materials Science and Engineering A-structural Materials Properties Microstructure and Processing | 2007

Measurements for Cu and Si diffusivities in Al–Cu–Si alloys by diffusion couples

Dingfei Zhang; John E. Morral; Harold D. Brody

Journal of Phase Equilibria and Diffusion | 2014

Chemical Diffusivities and Their Hidden Concentration Units

John E. Morral

Journal of Phase Equilibria and Diffusion | 2010

Predicting the Q-Phase in Al-Cu-Mg-Si Alloys

X. Pan; John E. Morral; H. D. Brody

Journal of Phase Equilibria and Diffusion | 2014

Validation of Multicomponent Diffusivities Using One Diffusion Couple

John E. Morral; W. D. Hopfe

Journal of Phase Equilibria and Diffusion | 2016

Uncertainty Analysis of Ternary Diffusivities Obtained from One Versus Two Compact Diffusion Couples

W. D. Hopfe; John E. Morral

Journal of Phase Equilibria and Diffusion | 2017

High Entropy Alloys, Miscibility Gaps and the Rose Geometry

John E. Morral; S.-L. Chen

Journal of Phase Equilibria and Diffusion | 2018

Body-Diagonal Diffusion Couples for High Entropy Alloys

John E. Morral

Journal of Phase Equilibria and Diffusion | 2017

A Regular Solution Model for a Single-Phase High Entropy and Enthalpy Alloy

John E. Morral; Shuanglin Chen

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H. D. Brody

University of Connecticut

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Ji-Cheng Zhao

Ohio State University

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Michael C. Gao

Carnegie Mellon University

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W. D. Hopfe

Ohio State University

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Anna Nakano

United States Department of Energy

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C. Lin

University of Connecticut

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Harold D. Brody

University of Connecticut

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James P. Bennett

United States Department of Energy

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Jinichiro Nakano

Carnegie Mellon University

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Ryan Michael Paul

Ohio State University

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