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Post-processing tool for in-situ diffraction studies of phase transformations in metallic materials

Reference number
Coordinator Swerim AB - Swerim AB, Kista
Funding from Vinnova SEK 298 238
Project duration July 2019 - February 2020
Status Completed
Venture Research infrastructure - utilisation and collaboration
Call Industrial pilot projects for utilisation of neutron- and photon based techniques at large scale infrastructures - spring 2019
End-of-project report 2019-02588_Outokumpu_AlfaLaval.docx.pdf (pdf, 243 kB)

Purpose and goal

Time-resolved diffraction experiments offer a unique opportunity to study phase transformations related to both production processes and the use of engineering materials. Post-processing and understanding a large set of data set after such experiments, however, is usually time-consuming and requires a level of manual adjustment of parameters and crystallographic knowledge which can be a drawback for industrial users. The aim of this project was to develop a simple fast post-processing tool to visualize and analyze time-resolved diffraction data from metallic materials.

Expected results and effects

Phase transformation of metallic materials during industrial processes is of a great importance for both material users and producers. The project has used the collaboration between a material producer (Outokumpu), an end-user (Alfa Laval) and a metal research institute (Swerim) to develop a user-friendly program to handles large sets of diffraction data. The results of this project will pave the way and make the use of in-situ experiments a simple routine for developing new alloys or new heat treatment processes and/or studying the behavior of materials under different conditions.

Planned approach and implementation

We have developed a toolbox to identify present phases within the structure, give a quantitative fraction of each phase, calculate lattice parameters, and provide information about the strain/stress within the lattice. The program can model thousands of diffraction patterns in only a few minutes and the use of it does not require crystallographic knowledge. We have used the program to analyze time-resolved diffraction data collected during heating and cooling cycles for duplex stainless steels, and also to calculate residual stress within steel materials.

The project description has been provided by the project members themselves and the text has not been looked at by our editors.

Last updated 2 July 2020

Reference number 2019-02588

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