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Author:

Vaithyanathan, Venugopalan

Title:

Phase-field Simulations of Coherent Precipitate Morphologies and Coarsening Kinetics

Graduate Program:

Materials Science and Engineering

Keywords:

phase-field model
3D simulation
first-principles phase-field coupling
coarsening of gamma-prime precipitates
multiscale model
anomalous coarsening

File:

Download thesis.pdf

Committee Members:

Zi Kui Liu, Committee Member
John Richard Hellmann Jr., Committee Member
Long Qing Chen, Committee Chair/Co-Chair
Darrell G Schlom, Committee Member
Qiang Du, Committee Member

Author:

Feng, Weiming

Title:

PHASE-FIELD MODELS OF MICROSTRUCTURE EVOLUTION AND NEW NUMERICAL STRATEGIES

Graduate Program:

Materials Science and Engineering

Keywords:

phase-field
microstructure
moving mesh
anisotropic mobility

File:

Download Dissertation_Weiming_Feng.pdf

Committee Members:

Long Chen, Dissertation Advisor/Co-Advisor
Long Qing Chen, Committee Chair/Co-Chair
Zi Kui Liu, Committee Member
Qiang Du, Committee Member
Padma Raghavan, Committee Member

Author:

Zhang, Wei

Title:

Probing Heat Transfer, Fluid Flow and Microstructural Evolution during Fusion Welding of Alloys

Graduate Program:

Materials Science and Engineering

Keywords:

fusion welding
phase transformation
fluid flow
heat transfer
diffusion
free surface

File:

Download thesis_weizhang.pdf

Committee Members:

Tarasankar Debroy, Committee Chair/Co-Chair
Long Qing Chen, Committee Member
John W Elmer, Committee Member
Panagiotis Michaleris, Committee Member
Judith Todd Copley, Committee Member

Author:

Guan, Xueyong

Title:

ELECTROCHEMICAL STUDY OF CORROSION PROCESSES IN HIGH SUBCRITICAL AND SUPERCRITICAL AQUEOUS SYSTEMS

Graduate Program:

Materials Science and Engineering

Keywords:

supercritical water oxidation
high subcritical and supercritical aqueous systems
electrochemical noise analysis
electrochemical corrosion mechanism
chemical corrosion mechanism
pressure
volume of activation
corrosion rates
energy of activation of corrosion processes

File:

Download Thesis.pdf

Committee Members:

Digby D Macdonald, Committee Chair/Co-Chair
Long Qing Chen, Committee Member
Paul Raymond Howell, Committee Member
Fan Bill B Cheung, Committee Member

Author:

He, Xiuli

Title:

HEAT TRANSFER, FLUID FLOW AND MASS TRANSFER IN LASER WELDING OF STAINLESS STEEL WITH SMALL LENGTH SCALE

Graduate Program:

Materials Science and Engineering

Keywords:

Heat transfer and fluid flow
stainless steel
Laser welding

File:

Download Thesis_Xiuli.pdf

Committee Members:

Tarasankar Debroy, Committee Chair/Co-Chair
Long Qing Chen, Committee Member
Christopher Muhlstein, Committee Member
Stephen M Copley, Committee Member

Author:

Huang, Xiaoming

Title:

DEVELOPMENT AND CHARACTERIZATION OF MEMBRANE ELECTRODE ASSMEBLY OF DIRECT METHANOL FUEL CELLS USING HYDROCARBON MEMBRANES AND SUPPORTED CATALYSTS

Graduate Program:

Materials Science and Engineering

Keywords:

DMFC
electrolyte membrane
supported catalyst

File:

Download All.pdf

Committee Members:

Chao Yang Wang, Dissertation Advisor/Co-Advisor
Chao Yang Wang, Committee Chair/Co-Chair
Long Qing Chen, Committee Member
Elizabeth C Dickey, Committee Member
Michael John Janik, Committee Member

Author:

Li, Xin

Title:

CHARGED POINT DEFECT IN RUTILE TIO2: FROM DEFECT CHARGE DISTRIBUTION TO DEFECT PHONON FREE ENERGY

Graduate Program:

Materials Science and Engineering

Keywords:

TiO2
defect formation energy
phonon free energy
thermodynamics
defect phase diagram

File:

Download PhD_Dissertation.pdf

Committee Members:

Sarah Elizabeth Dickey, Dissertation Advisor/Co-Advisor
Elizabeth C Dickey, Committee Chair/Co-Chair
Long Qing Chen, Committee Member
Clive A Randall, Committee Member
Vincent Henry Crespi, Committee Member
Suzanne E Mohney, Committee Member

Author:

Zhong, Yu

Title:

Investigation in Mg-Al-Ca-Sr-Zn System by Computational Thermodynamics Approach Coupled with First-Principles Energetics and Experiments

Graduate Program:

Materials Science and Engineering

Keywords:

Computational Thermodynamics
Mg Alloy
Creep Resistance
First-Principles

File:

Download The_Pennsylvania_State_University.pdf

Committee Members:

Vincent Henry Crespi, Committee Member
Jorge Osvaldo Sofo, Committee Member
Long Qing Chen, Committee Member
Zi Kui Liu, Committee Chair/Co-Chair

Author:

Chen, Yingzi

Title:

THE OXIDATION AND HYDRIDING OF ZIRCALOY FUEL CLADDING IN HIGH TEMPERATURE AQUEOUS SOLUTIONS

Graduate Program:

Materials Science and Engineering

Keywords:

oxidation/hydriding mechanism
Zircaloy-4
zirconium
passive film
point defect model

File:

Download thesis.pdf

Committee Members:

Digby D Macdonald, Committee Chair/Co-Chair
Mirna Urquidi Macdonald, Committee Chair/Co-Chair
Long Qing Chen, Committee Member
Earle Richard Ryba, Committee Member
W Murray Small, Committee Member

Author:

Mei, Zhigang

Title:

First-principles Thermodynamics of Phase Transition: from Metal to Oxide

Graduate Program:

Materials Science and Engineering

Keywords:

First-principles
thermodynamics
phase transitions
Ti
TiO2
BiFeO3

File:

Download ZhigangMei_Dissertation.pdf

Committee Members:

Zi Kui Liu, Dissertation Advisor/Co-Advisor
Long Qing Chen, Committee Member
Vincent Henry Crespi, Committee Member
Clive A Randall, Committee Member