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  A combinatorial study of the effect of Al and Cr additions on the mechanical, physical and corrosion properties of Fe

Springer, H., Baron, C., Tanure, L., & Rohwerder, M. (2021). A combinatorial study of the effect of Al and Cr additions on the mechanical, physical and corrosion properties of Fe. Materials Today Communications, 29: 102947. doi:10.1016/j.mtcomm.2021.102947.

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 Creators:
Springer, Hauke1, 2, 3, Author              
Baron, Christian3, Author              
Tanure, L.4, Author              
Rohwerder, Michael5, Author              
Affiliations:
1Sustainable Materials Science and Technology, Partner Group with RWTH Aachen University, Interdepartmental and Partner Groups, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_3289785              
2Institut für Bildsame Formgebung, RWTH Aachen University, Intzestr. 10, 52072 Aachen, Germany, ou_persistent22              
3Combinatorial Metallurgy and Processing, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863386              
4RWTH Aachen University, Institut für Bildsame Formgebung, Intzestrasse 10, 52072 Aachen, Germany, ou_persistent22              
5Corrosion, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_2074315              

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Free keywords: Aluminum alloys; Aluminum corrosion; Atmospheric corrosion; Corrosion resistant alloys; Corrosive effects; Elastic moduli; Scanning electron microscopy; Seawater corrosion; Stainless steel; Steel corrosion; Tensile testing; X ray photoelectron spectroscopy, Al additions; Combinatorial approach; Combinatorial studies; Combinatorics; Corrosion property; Cr addition; Density; Lightweight design; Mechanical; Mechanical/physical properties, Corrosion resistance
 Abstract: The effects of Al and Cr additions on the mechanical, physical and corrosion resistance of Fe were investigated in a combinatorial approach on a total of 42 alloys with compositions ranging from 0 to 10 wt of Al together with 0–12 wt of Cr (in increments of 2 wt). All alloys were subjected to hardness, tensile, density, Young's modulus and salt-spray testing, along with structural analysis using x-ray diffraction. Selected alloys were additionally analysed with scanning electron microscopy (microstructure) and x-ray photoelectron spectroscopy (corroded surface). Increasing Al additions linearly reduced both density and stiffness, and led to a sudden strengthening above 2 wt and embrittlement above 8 wt. Cr additions counteracted the effects of Al on the mechanical and physical properties, and about 4–8 wt of Cr could be substituted by 8–10 wt Al for similar protective effects against wet corrosion. A decrease in Cr and increase in Al concentration in the bulk material results in a similar trend within the passive layer, preserving a significant degree of passivity. Evaluation of the comprehensive data by desirability functions allowed to identify most relevant compositions as the basis for the design of lightweight corrosion resistant steels. © 2021 Elsevier Ltd

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Language(s): eng - English
 Dates: 2021-10-302021-12
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.mtcomm.2021.102947
 Degree: -

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Title: Materials Today Communications
  Abbreviation : Mater. Today Commun.
Source Genre: Journal
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Publ. Info: Amsterdam [u.a.] : Elsevier
Pages: - Volume / Issue: 29 Sequence Number: 102947 Start / End Page: - Identifier: ISSN: 2352-4928
CoNE: https://pure.mpg.de/cone/journals/resource/2352-4928