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  On the effect of Ni additions to Fe – Cr – B high modulus steels

Baron, C., & Springer, H. (2019). On the effect of Ni additions to Fe – Cr – B high modulus steels. Materials and Design, 167: 107624. doi:10.1016/j.matdes.2019.107624.

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 Creators:
Baron, Christian1, Author              
Springer, Hauke1, Author              
Affiliations:
1Combinatorial Metallurgy and Processing, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863386              

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Free keywords: Atmospheric corrosion; Balancing; Corrosion resistance; Density (specific gravity); Hot rolled steel; Seawater corrosion; Steel corrosion; Stiffness; Stiffness matrix; Tensile strength, Chemical and physical properties; Corrosive attacks; Lightweight design; Microstructure and properties; Property profiles; Salt spray testing; Systematic study; Ultimate tensile strength, Nickel alloys
 Abstract: We studied the effect of Ni additions up to 15 wt on microstructure and properties of cast and hot-rolled Fe – 24 Cr – 1.8 B (wt) steels. The base alloy without Ni addition reached a stiffness/density ratio of 32.7 GPa g −1 cm 3 , 400 MPa yield strength, 800 MPa ultimate tensile strength and 20 ductility. Increasing the Ni concentration resulted in a change of lattice parameters and the mean average size of the in-situ formed M 2 B type boride particles. It also altered the matrix from a ferritic towards a martensitic and then austenitic constitution, which led to a decrease in the stiffness/density ratio but an increase in strength. Salt spray testing indicated that Fe – Cr – B – Ni alloys can reach a similar performance against wet corrosive attacks as conventional stainless steels. The results of this systematic study provide the basis for balancing the mechanical, chemical and physical properties, and thereby broadening the property profile of this novel alloy design concept for lightweight design. © 2019

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Language(s): eng - English
 Dates: 2019-04-05
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.matdes.2019.107624
 Degree: -

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Title: Materials and Design
  Abbreviation : Mater. Des.
Source Genre: Journal
 Creator(s):
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Publ. Info: Reigate, Surrey, Eng. : Elsevier
Pages: - Volume / Issue: 167 Sequence Number: 107624 Start / End Page: - Identifier: ISSN: 0264-1275
CoNE: https://pure.mpg.de/cone/journals/resource/954926234428