Thermomechanical Processing of Friction Welded Steel-Aluminum Billets to Improve Joining Zone Properties

authored by: Bernd Arno Behrens, Robert Goldstein, David Guisbert, Deniz Duran
Abstract: Bi-material machine components are fabricated usually by joining two individual components which are already given their near-final or final form. These are then put into operation either directly or upon a finishing process. Contrary to that, researchers of the Collaborative Research Centre "CRC 1153 Tailored Forming" arc investigating novel process chains, in which different materials are joined in the first step and then subjected to further processing, i.e., forming, machining and heat treatment. By this means, the joining zone properties, which are adversely affected due to the joining process, can be treated and improved via thermomechanical processing during forming. On the other hand, process-specific challenges arise especially for workpieces consisting of dissimilar materials, i.e., steel and aluminum. In order to obtain a favorable flow behavior of the materials in the vicinity of the joining zone, a near step-function temperature distribution in the bi-material billet is desirable. Induction heating is viewed as the most promising method to be used for this purpose. At the Heat Treat 2017 conferences, a paper was presented which discussed the strategy for thermomechanical processing and the modeling of the first concept for the induction heating process [1]. The current study builds on the previous paper and presents the modeling of the forming process along with the analysis of the first prototype samples formed using the technology. A metallurgical evaluation of the joining zone properties of the prototype components after thermomechanical processing will be presented. Additional considerations will be given on how to further improve the process and move towards a production capable process.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
External Organisation(s): Fluxtrol Inc.
QA Metallurgical Services, LLC
Type: Conference contribution
Pages: 208-217
No. of pages: 10
Publication date: 2018
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Philosophy, Automotive Engineering, Condensed Matter Physics, Surfaces, Coatings and Films
Electronic version(s): https://fluxtrol.com/inc/pdf/Duran-IFUM-Fluxtrol_TPIM_Conference.pdf (Access: Unknown)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{24d8a76500a84ba1b535df244802fa87,
title = "Thermomechanical Processing of Friction Welded Steel-Aluminum Billets to Improve Joining Zone Properties",
abstract = "Bi-material machine components are fabricated usually by joining two individual components which are already given their near-final or final form. These are then put into operation either directly or upon a finishing process. Contrary to that, researchers of the Collaborative Research Centre {"}CRC 1153 Tailored Forming{"} arc investigating novel process chains, in which different materials are joined in the first step and then subjected to further processing, i.e., forming, machining and heat treatment. By this means, the joining zone properties, which are adversely affected due to the joining process, can be treated and improved via thermomechanical processing during forming. On the other hand, process-specific challenges arise especially for workpieces consisting of dissimilar materials, i.e., steel and aluminum. In order to obtain a favorable flow behavior of the materials in the vicinity of the joining zone, a near step-function temperature distribution in the bi-material billet is desirable. Induction heating is viewed as the most promising method to be used for this purpose. At the Heat Treat 2017 conferences, a paper was presented which discussed the strategy for thermomechanical processing and the modeling of the first concept for the induction heating process [1]. The current study builds on the previous paper and presents the modeling of the forming process along with the analysis of the first prototype samples formed using the technology. A metallurgical evaluation of the joining zone properties of the prototype components after thermomechanical processing will be presented. Additional considerations will be given on how to further improve the process and move towards a production capable process.",
author = "Behrens, {Bernd Arno} and Robert Goldstein and David Guisbert and Deniz Duran",
year = "2018",
language = "English",
series = "Thermal Processing in Motion 2018 - Including the International Conference on Heat Treatment and Surface Engineering in Automotive Applications",
publisher = "ASM International",
pages = "208--217",
editor = "Robert Goldstein and Mackenzie, {D. Scott} and Lesley Frame and Lynn Ferguson and Dave Guisbert",
booktitle = "Thermal Processing in Motion 2018 - Including the International Conference on Heat Treatment and Surface Engineering in Automotive Applications",
address = "United States",
note = "Thermal Processing in Motion 2018 - Including the 4th International Conference on Heat Treatment and Surface Engineering in Automotive Applications ; Conference date: 05-06-2018 Through 07-06-2018",
}