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Mechanical Properties of ARMCO® Iron after Large and Severe Plastic Deformation : Application Potential for Precursors to Ultrafine Grained Microstructures

Bruder, Enrico (2018)
Mechanical Properties of ARMCO® Iron after Large and Severe Plastic Deformation : Application Potential for Precursors to Ultrafine Grained Microstructures.
In: Metals, 2018, (3)
Article, Secondary publication

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Item Type: Article
Type of entry: Secondary publication
Title: Mechanical Properties of ARMCO® Iron after Large and Severe Plastic Deformation : Application Potential for Precursors to Ultrafine Grained Microstructures
Language: English
Date: 19 March 2018
Place of Publication: Darmstadt
Year of primary publication: 2018
Publisher: MDPI
Journal or Publication Title: Metals
Issue Number: 3
Series Volume: 8
Corresponding Links:
Origin: Secondary publication via sponsored Golden Open Access
Abstract:

Ultrafine grained (UFG) metals processed by severe plastic deformation (SPD) are well known for their outstanding mechanical properties, yet, current applications are very limited mostly due to the elaborate processing. The present work investigates the microstructures and mechanical properties of precursors to UFG microstructures that evolve at strains below the levels required for UFG microstructures, which implies less processing effort. ARMCO® iron is subjected to a single pass of equal channel angular pressing (ECAP), cold rolling, as well as a combination of both processes and compared to strain–free samples and a UFG reference condition subjected to five ECAP passes. All conditions are characterized regarding their microstructures and mechanical properties using electron backscatter diffraction, tensile tests, and rotating bending fatigue test. The precursor states show intermediate properties in between those of the strain-free and the UFG reference condition. Compared to the processing effort, the difference in properties between precursors and UFG reference is relatively small. Especially a combination of a single ECAP pass followed by cold rolling is a good compromise in terms of processing effort and mechanical properties with an endurance limit being less than 10% lower as compared to the UFG reference condition.

URN: urn:nbn:de:tuda-tuprints-73020
Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy
Date Deposited: 19 Mar 2018 12:31
Last Modified: 19 Sep 2023 18:01
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/7302
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