Forming Complex Graded and Homogeneous Components by Joining Simple Presintered Parts of TRIP-Matrix Composite through Powder Forging

The ability to fabricate complex graded structures would be a significant step towards the manufacturing of material systems with properties tailored to individual applications. While powder metallurgy has had some success in this regard, it requires that the semi-finished products be exactly simila...

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Main Authors: Markus Kirschner, Stefan Martin, Sergey Guk, Ulrich Prahl, Rudolf Kawalla
Format: Article
Language:English
Published: MDPI AG 2020-04-01
Series:Metals
Subjects:
Online Access:https://www.mdpi.com/2075-4701/10/4/543
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spelling doaj-3bd256b340904c3883f330006f04d2f62020-11-25T02:28:22ZengMDPI AGMetals2075-47012020-04-011054354310.3390/met10040543Forming Complex Graded and Homogeneous Components by Joining Simple Presintered Parts of TRIP-Matrix Composite through Powder ForgingMarkus Kirschner0Stefan Martin1Sergey Guk2Ulrich Prahl3Rudolf Kawalla4Institute of Metal Forming, Technische Universität Bergakademie Freiberg, 09599 Freiberg, GermanyInstitute of Materials Science, Technische Universität Bergakademie Freiberg, 09599 Freiberg, GermanyInstitute of Metal Forming, Technische Universität Bergakademie Freiberg, 09599 Freiberg, GermanyInstitute of Metal Forming, Technische Universität Bergakademie Freiberg, 09599 Freiberg, GermanyInstitute of Metal Forming, Technische Universität Bergakademie Freiberg, 09599 Freiberg, GermanyThe ability to fabricate complex graded structures would be a significant step towards the manufacturing of material systems with properties tailored to individual applications. While powder metallurgy has had some success in this regard, it requires that the semi-finished products be exactly similar to the final component. However, it is significantly cheaper to produce simple, semi-finished products and then join them to form complex components with the desired graded structure through powder forging and simultaneous compaction. It is also essential that the graded structure of the semi-finished products is retained during the forming process. In this study, pre-sintered cylindrical semi-finished products consisting of identical homogeneous layers as well as graded components consisting of non-identical homogeneous layers were joined using powder forging at 1100 °C. The microstructures and densities as well as the mechanical properties of the final components were investigated. It was observed that, upon compaction, the components formed solid structures, in which the reinforcing ZrO<sub>2</sub> particles were completely integrated within the transformation-induced plasticity steel matrix. Finally, it was confirmed that the graded structure of the semi-finished products was retained in the final components.https://www.mdpi.com/2075-4701/10/4/543powder forgingTRIP-matrix compositeforminggraded structurehomogeneous structure
collection DOAJ
language English
format Article
sources DOAJ
author Markus Kirschner
Stefan Martin
Sergey Guk
Ulrich Prahl
Rudolf Kawalla
spellingShingle Markus Kirschner
Stefan Martin
Sergey Guk
Ulrich Prahl
Rudolf Kawalla
Forming Complex Graded and Homogeneous Components by Joining Simple Presintered Parts of TRIP-Matrix Composite through Powder Forging
Metals
powder forging
TRIP-matrix composite
forming
graded structure
homogeneous structure
author_facet Markus Kirschner
Stefan Martin
Sergey Guk
Ulrich Prahl
Rudolf Kawalla
author_sort Markus Kirschner
title Forming Complex Graded and Homogeneous Components by Joining Simple Presintered Parts of TRIP-Matrix Composite through Powder Forging
title_short Forming Complex Graded and Homogeneous Components by Joining Simple Presintered Parts of TRIP-Matrix Composite through Powder Forging
title_full Forming Complex Graded and Homogeneous Components by Joining Simple Presintered Parts of TRIP-Matrix Composite through Powder Forging
title_fullStr Forming Complex Graded and Homogeneous Components by Joining Simple Presintered Parts of TRIP-Matrix Composite through Powder Forging
title_full_unstemmed Forming Complex Graded and Homogeneous Components by Joining Simple Presintered Parts of TRIP-Matrix Composite through Powder Forging
title_sort forming complex graded and homogeneous components by joining simple presintered parts of trip-matrix composite through powder forging
publisher MDPI AG
series Metals
issn 2075-4701
publishDate 2020-04-01
description The ability to fabricate complex graded structures would be a significant step towards the manufacturing of material systems with properties tailored to individual applications. While powder metallurgy has had some success in this regard, it requires that the semi-finished products be exactly similar to the final component. However, it is significantly cheaper to produce simple, semi-finished products and then join them to form complex components with the desired graded structure through powder forging and simultaneous compaction. It is also essential that the graded structure of the semi-finished products is retained during the forming process. In this study, pre-sintered cylindrical semi-finished products consisting of identical homogeneous layers as well as graded components consisting of non-identical homogeneous layers were joined using powder forging at 1100 °C. The microstructures and densities as well as the mechanical properties of the final components were investigated. It was observed that, upon compaction, the components formed solid structures, in which the reinforcing ZrO<sub>2</sub> particles were completely integrated within the transformation-induced plasticity steel matrix. Finally, it was confirmed that the graded structure of the semi-finished products was retained in the final components.
topic powder forging
TRIP-matrix composite
forming
graded structure
homogeneous structure
url https://www.mdpi.com/2075-4701/10/4/543
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