Master Thesis: The effect of carbon gradients on processing response in AH

Publiceringsdatum: 2024-09-09

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Jobbannons

We want to be more! The research institute Swerim conducts needs-based industrial research and development concerning metals and their route from raw material to finished product. Swerim has 200 co-workers in two locations in Sweden - Luleå and Stockholm. Our vision is a fossil-free and circular industry.

Summary

The goal of the study is to determine the possibility to create a carbon gradient material by casting two different compositions on top of each other, followed by homogenizing and standard thermomechanical processing. The master’s thesis will involve practical laboratory and thermomechanical processing work, as well as the modelling of carbon diffusion during various heat treatments. The results will be verified based on chemical and dilatometry experiments, complemented by metallography.

Introduction

Gradient materials are characterized by variance in structure, composition and properties over the volume of the material, designed to answer specific research questions or application needs. In casting and thermomechanical processing the manufacturing process must involve the diffusional movement of alloying components (atoms) across an interface during high-temperature processing operations such as homogenizing. Modelling tools are available for predicting these phenomena, but it would be highly useful to have an economical and robust method to validate and calibrate the modelling results. Modification of the rapid prototyping route at Swerim could provide such a validation tool, at the same time as the prototype gradient material itself would be created.

Goals

The goal of the study is to create a validation and calibration tool for the prediction of long-distance diffusion during homogenizing to create gradient material. At the same time, the rapid prototyping route at Swerim will be modified to create these materials.

The study will be conducted in Kista (Stockholm). In practice, a starting composition and gradient targets will be decided with the student. The material will then be cast, homogenized, hot and cold rolled and characterized by chemical, dilatometry, hardness and microstructure measurements.

The results and conclusions of the work will be presented to the research partners of the Consortium for Low-alloy and Stainless Steels (CLASS) in one or more of the consortium meetings.

Required qualifications

Student in material science, physics, chemistry, or related area. The work should be initiated as soon as possible. The master student performing the work will gain a large industry network.

Further information

Swerim rewards the student with 50 000 SEK for an approved master thesis (30hp).  

The work will be initiated as soon as possible.

Contact

You are welcome to contact Tuomo Nyyssönen, tuomo.nyyssonen@swerim.se, if you have any questions about the project.

Application

Apply by using the application function below. Please note that we fill the thesis as soon as we find a suitable applicant, which means we can fill the position before the deadline. You will receive a confirmation that Swerim has received your application. Please note that we fill the position as soon as we find a suitable applicant, which means we can fill the position before the deadline.