PhD in the Area of Dissimilar Laser Beam Welding and Time-Resolved Phase Transformation Analysis

IT-Systemhaus der Bundesagentur für Arbeit; Geesthacht; Vor Ort; EUR 40.000 - 50.000; Vollzeit

Zusammenfassung

A leading research institute in Germany seeks a doctoral candidate for a PhD project focusing on dissimilar laser beam welding and phase transformation analysis using synchrotron X-ray diffraction. The position involves experimental design, execution of laser welding experiments, and collaboration with an international research team. Applicants should have a Master's degree in materials science or a related field, along with relevant skills in laser welding and numerical simulation. Opportunities for professional development and a supportive work environment are offered.

Leistungen

Exciting research environment

Subsidy for public transport

Opportunities for further training

Social benefits according to public service agreements

6 weeks holiday per year

Flexible work arrangements

Family-friendly policies

Qualifikationen

• Master's degree in materials science or a related field is required.
• Experience with laser welding and high-energy X-ray diffraction techniques.
• Strong skills in numerical simulation and microstructural characterization.

Aufgaben

• Design experimental setups for laser beam welding.
• Conduct time-resolved high-energy X-ray diffraction experiments.
• Analyze microstructural and mechanical properties post-welding.
• Develop numerical models for phase transformations and stress evolution.
• Collaborate with international project partners and participate in meetings.
• Prepare scientific publications and present findings.

Kenntnisse

Laser welding techniques

High-energy X-ray diffraction

Numerical simulation

Microstructural characterization

Collaboration and communication

Ausbildung

Master's degree in materials science or related field

Tools

ABAQUS

SEM

EBSD

Jobbeschreibung

PhD in the Area of Dissimilar Laser Beam Welding and Time-Resolved Phase Transformation Analysis

The Institute of Material and Process Design at the Helmholtz-Zentrum Hereon GmbH invites applications for a doctoral candidate in the field of dissimilar laser beam welding with a strong focus on time-resolved phase transformation investigation using high-energy synchrotron X‑ray diffraction.

Within an international research team, you will work on a highly innovative scientific topic aimed at understanding the physical mechanisms governing laser welding of dissimilar metallic materials. Your research will combine advanced laser processing, in-depth materials characterization, and in-situ synchrotron diffraction methods to reveal phase transformations, residual stress evolution, and microstructure development during laser welding. In addition, you will support the development of multi-scale modelling approaches to correlate thermal‑mechanical behaviour with experimentally observed transformation kinetics.

A central part of your work will involve time‑resolved high‑energy X‑ray diffraction experiments at synchrotron facilities, enabling in‑situ tracking of microstructural evolution during welding at millisecond time scales. You will work closely with experimental and simulation specialists to integrate these observations into improved process understanding and predictive modelling strategies.

The position offers the opportunity to pursue a doctoral degree (PhD) within the framework of the research project and provides exposure to an international and interdisciplinary scientific environment.

Equal opportunity is an important part of our personnel policy. We would therefore strongly encourage qualified women to apply for the position. The position is initially for two years.

• Design and development of experimental setups for dissimilar laser beam welding, including the preparation of test specimens with tailored geometries and metallurgical configurations.
• Execution of laser welding experiments using advanced high‑power laser systems, including parameter optimization for joining dissimilar material combinations.
• Time‑resolved high‑energy X‑ray diffraction experiments at synchrotron facilities (e.g., DESY Hamburg) to investigate phase transformation, texture evolution, and strain development during welding. These measurements are a major component of the project and may occasionally require weekend work depending on beamline schedules.
• Post‑weld micro‑structural and mechanical characterization (e.g., SEM, EBSD, hardness, tensile/fatigue testing).
• Residual stress analysis (ex‑situ and in‑situ) and correlation of experimental data with numerical simulation results.
• Development of numerical and multi‑scale simulation models to describe thermal cycles, phase transformations, and stress evolution, using commercial software such as ABAQUS or related tools.
• Collaboration and knowledge exchange with project partners in Germany, participation in project meetings, workshops, and international conferences.
• Preparation of scientific publications in peer‑reviewed journals and presentation of research findings.

We offer:

• an exciting and varied job in a research centre with around 1,000 employees from more than 60 nations
• a well‑connected research campus (public transport) and best networking opportunities, subsidy for the Deutschlandticket if certain conditions are met (job ticket)
• individual opportunities for further training
• social benefits according to the collective agreement of the public service and remuneration up to pay group XX according to TV EntgO Bund
• an excellent technical infrastructure and modern workplace equipment
• 6 weeks holiday per year; company holidays between Christmas and New Year's Day
• very good compatibility of private and professional life; offers of mobile and flexible work
• PhD Buddy Program
• family‑friendly company policy with childcare facilities, e.g. nursery close to the company
• free assistance program for employees (EAP)
• a varied offer in the canteen on campus
• Mentorenprogramm/Coaching
• Firmenevents
• Kantine