MATERIALS SCIENCE · PHYSICAL METALLURGY · PROCESS DEVELOPMENT

Humphrey Wara
Odhiambo, Ph.D.

I develop high-performance metallic materials by connecting processing, microstructure, and mechanical performance.

Professional portrait of Humphrey Wara Odhiambo, Ph.D.
Research focus

Thermomechanical processing of Al–Ce-based alloys for elevated-temperature applications

Alloy design · Casting · Extrusion · Rolling · Rapid solidification · Advanced characterization

MY STORY

From mechanical engineering to advanced metallic materials.

My research path spans mechanical engineering, computational fluid–structure interaction, and materials science. I completed my Ph.D. in Materials Science and Engineering at Iowa State University, where I focused on rare-earth-containing aluminum alloys and their performance in demanding thermal environments.

Today, my work centers on designing processing routes that control microstructure and unlock useful combinations of strength, ductility, toughness, and thermal stability.

B.Sc.Mechanical Engineering
M.Sc.Fluid–Structure Interactions
Ph.D.Materials Science & Engineering
NowAdvanced Materials R&D

EDUCATION CREDENTIAL

Ph.D. in Materials Science & Engineering

Iowa State University · 2025

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DOCTORAL RESEARCH

Making aluminum work at higher temperatures.

Conventional aluminum alloys lose substantial strength as temperature rises. My doctoral research investigated Al–Ce-based alloys, combining composition design with thermomechanical processing to create refined, thermally stable microstructures.

~390 MPaUTS achieved in extruded Al–10Ce–4Mg
~86%strength retention after 300 °C / 100 h exposure
260 MPaUTS after hot rolling Al–10Ce–4Mg
~244 HVhardness of melt-spun Al–7Ce–14Cu–0.5Zr

Ph.D. DISSERTATION · IOWA STATE UNIVERSITY · 2025

Thermomechanical processing of Al-Ce-based alloys and their mechanical properties for elevated temperature applications

Doctoral dissertation in Materials Science and Engineering.

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SELECTED PROJECTS

Research through processing, characterization, and performance.

01 · EXTRUSION

Binary Al–Ce

Investigated extrusion-driven grain refinement and fragmentation of Al₁₁Ce₃, linking texture and microstructural evolution to strength, ductility, toughness, and elevated-temperature stability.

EBSD · XRD · SEM · Tensile · Fracture
02 · ALLOY DEVELOPMENT

Al–Ce–Mg

Combined Mg solid-solution strengthening with thermally stable Ce-rich intermetallics to increase room-temperature strength while retaining mechanical performance after prolonged thermal exposure.

Extrusion · Heat treatment · Mechanical testing
03 · ROLLING

Scalable thermomechanical processing

Designed and evaluated hot-rolling routes for Al–10Ce–4Mg, producing a refined microstructure and substantial improvement over the as-cast condition.

Rolling · SEM · XRD · EBSD · Hardness
04 · RAPID SOLIDIFICATION

Al–Ce–Cu–Zr

Used melt spinning to create a highly refined multicomponent alloy and studied microstructure, phase evolution, strengthening, and hardness retention during 350 °C aging.

Melt spinning · Annealing · XRD · Microhardness
05 · MAGNETIC MATERIALS

NdFeB permanent magnets

Supported development of continuous hot-roll processing for nanograin NdFeB magnets, including powder processing, can welding, hot rolling, grain-boundary diffusion, and magnetic characterization.

Powder processing · Hot rolling · Magnetics
06 · SEMICONDUCTORS

Device fabrication & process integration

Hands-on fabrication experience spanning photolithography, thin films, CVD/MOCVD, oxidation, etching, metallization, sensors, and Ga₂O₃ photodetectors.

Cleanroom · Lithography · Thin films · MOCVD

PUBLICATIONS

Peer-reviewed research on Al–Ce alloy processing and performance.

Selected publications from my doctoral research, spanning extrusion, rolling, alloy development, microstructure, and elevated-temperature stability.

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2026
JOURNAL ARTICLE

Effect of thermomechanical processing on mechanical properties and the microstructure of ternary Al-Ce-Mg alloy

Gaurav Singh, Humphrey Wara Odhiambo, Mohamad Hasan Bin Tasneem, Gaoyuan Ouyang, Monica A. Soare, Min-chul Kang, Lin Zhou, Jun Cui, Ralph E. Napolitano, Catalin R. Picu.

Journal of Materials Science: Metallurgy · DOI 10.1007/s44492-026-00011-3

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2026
JOURNAL ARTICLE · EQUAL CONTRIBUTION

Effect of Rolling on the Microstructure and Properties of Cast Al-10Ce-4Mg Alloy

Gaurav Singh, Humphrey Wara Odhiambo, Mohamad Hasan Bin Tasneem, Monica A. Soare, Jun Cui, Ralph E. Napolitano, Catalin R. Picu, Gaoyuan Ouyang.

Materials 19 (2026), 2993

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2025
CONFERENCE PROCEEDINGS

Al–Ce-Based Alloys: Processing, Mechanical Properties, and High-Temperature Stability

Humphrey Wara Odhiambo, Gaurav Singh, Mohamad Tasneem, Monica A. Soare, Jason Leszczewicz, Jun Cui, Ralph E. Napolitano, Gaoyuan Ouyang, Catalin R. Picu.

Light Metals 2025 · The Minerals, Metals & Materials Society · DOI 10.1007/978-3-031-80676-6_10

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2024
JOURNAL ARTICLE

Effect of thermomechanical processing on mechanical properties and the microstructure of binary Al-Ce alloy

Gaurav Singh, Humphrey Wara Odhiambo, Mohamad Hasan Bin Tasneem, Gaoyuan Ouyang, Monica A. Soare, Jun Cui, Ralph E. Napolitano, Catalin R. Picu.

Materials Science & Engineering A 916 (2024), 147395 · DOI 10.1016/j.msea.2024.147395

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CAPABILITIES

Experimental materials science from melt to microstructure.

Processing

Casting, extrusion, rolling, heat treatment, rapid solidification, sintering, powder processing

Characterization

SEM, EDS, EBSD, XRD, XRF, DSC, optical microscopy, fractography

Mechanical testing

Tensile testing, Vickers microhardness, fracture evaluation, elevated-temperature testing

Engineering

MATLAB, Origin, SolidWorks, Inventor, process development, technical documentation

RECOGNITION

Research with measurable impact.

2025 TMS Light Metals Award

Recognition for contributions to Al–Ce alloy research and processing.

DOE / Ames National Laboratory

International Student Scholarship, 2022–2025.

Research mentorship

Mentored four undergraduate researchers in alloy processing and thermomechanical heat treatment.

LET'S CONNECT

Interested in materials R&D, metallurgy, process development, and postdoctoral research.

dr.hwara@gmail.com · Ames, Iowa · Open to relocation

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