Postdoc -Microstructure Characterization and Mechanical Behavior of Advanced Structural Alloy

We are seeking a Postdoctoral Research Associate to conduct advanced research on the mechanical behavior and microstructure evolution of advanced structural alloys. This position resides in the Multiscale Modeling and Materials by Design (M2MD) Group within the Materials Science and Technology Division (MSTD) at Oak Ridge National Laboratory (ORNL).

About the role

The selected candidate will work in a highly collaborative environment, leveraging state-of-the-art neutron and X-ray characterization facilities to develop a mechanistic understanding of deformation, strengthening, and failure in advanced alloys. The research will focus on integrating microstructure characterization, in situ diffraction techniques, and mechanical testing to uncover processing–microstructure–property relationships. The candidate will have opportunities to interact with multidisciplinary teams and contribute to high-impact publications and collaborative projects.

Responsibilities

• Conduct research on deformation mechanisms and mechanical behavior of advanced structural alloys.
• Perform detailed microstructural characterization using SEM, EBSD, TEM, XRD, and related techniques.
• Conduct in situ neutron or X-ray diffraction experiments to study micromechanical behavior under loading conditions (e.g., tension, compression, creep).
• Design and execute mechanical testing experiments including tensile, fatigue, creep, impact, and nanoindentation testing.
• Analyze lattice strain evolution, phase stress, and defect evolution using advanced data analysis tools.
• Perform alloy fabrication and processing (e.g., arc melting, heat treatment) and relate processing to performance.
• Apply analytical and modeling approaches to interpret experimental results.
• Collaborate with internal and external research teams to define and advance research directions.
• Present research findings and publish results in peer-reviewed journals.
• Align behaviors, priorities, and interactions with ORNL’s core values of Impact, Integrity, Teamwork, Safety, and Service.
• Promote a respectful workplace that fosters equal opportunity.

Requirements

• A PhD in Materials Science & Engineering, Physics, Chemistry, or a related field completed within the last 5 years.
• A minimum of 2 years of post-Ph.D. experience utilizing computational thermodynamic (CALPHAD) software, such as Thermo-Calc, DICTRA, PANDAT, or FactSage.
• Proficiency in materials data analytics, including correlation analysis and machine learning techniques.

Qualifications

• Experience with microstructure characterization techniques (SEM, EBSD, TEM, XRD).
• Experience in mechanical testing (tension, compression, fatigue, creep, nanoindentation) and in situ neutron or synchrotron diffraction techniques.
• Background in advanced structural alloys, including high-entropy alloys or precipitation-strengthened systems.
• Familiarity with diffraction and data analysis tools (e.g., GSAS, GSAS-II, VDRIVE).
• Experience in alloy fabrication and processing (e.g., arc melting, thermomechanical processing, additive manufacturing).
• Knowledge of deformation mechanisms such as dislocation slip, twinning, and precipitation strengthening.
• Excellent written and oral communication skills.
• Motivated self-starter with the ability to work independently and collaboratively in teams.
• Ability to function well in a fast-paced research environment, set priorities, and adapt to changing needs.

Special Requirements

• A Real ID-compliant form of identification will be required for employment at ORNL.
• All employees must obtain and maintain a federal Personal Identity Verification (PIV) card, requiring a favorable post-employment background investigation, including a declaration of illegal drug activities within the last year (marijuana and cannabis derivatives are included, regardless of state laws).
• Foreign national candidates who have not resided in the U.S. for three consecutive years are not eligible for a PIV credential and must obtain a favorable Local Site Specific Only (LSSO) risk determination to maintain employment. After meeting the three-year residency requirement, a PIV credential will be required.
• Applicants cannot have received their Ph.D. more than five years prior to the date of application and must complete all degree requirements before starting their appointment.
• The appointment length will be for up to 24 months with the potential for extension, subject to performance and availability of funding.
• Three letters of recommendation are required when applying for this position.

Benefits

• Medical, dental, and vision plans.
• 401(k) Retirement Plan and Contributory Pension Plan.
• Life insurance and disability benefits.
• Generous vacation, holidays, and parental leave.
• Legal insurance with identity theft protection.
• Employee Assistance Plan.
• Flexible Spending Accounts and Health Savings Accounts.
• Wellness programs and educational assistance.
• Relocation assistance and employee discounts.
• On-site fitness, banking, and cafeteria facilities.
• Flexible work hours to support work-life balance.