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Corrosion–microstructure interrelations in new low-lead and lead-free brass alloys
RISE - Research Institutes of Sweden, Materials and Production, KIMAB.
RISE - Research Institutes of Sweden, Materials and Production, KIMAB.
RISE - Research Institutes of Sweden, Materials and Production, KIMAB.
RISE - Research Institutes of Sweden, Materials and Production, KIMAB.
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2018 (English)In: Materials Science and Technology, ISSN 0267-0836, E-ISSN 1743-2847Article in journal (Refereed) In press
Abstract [en]

Stress-relieving heat treatment has been reported to deplete the corrosion resistance of new low-lead and lead-free brass alloys. How the heat treatment, processing and material composition relates to the microstructure and corrosion performance is not well understood. The present study aims to fill this knowledge gap by mapping stress-relieving annealing conditions and different standardised compositions to their respective microstructures and dezincification performance. It was found that loss of corrosion resistance was only the most severe for alloys with higher aluminium and iron content. These alloys displayed significant precipitation of intermetallic aluminium arsenide particles on grain boundaries, twins and lead particles, as well as the formation of β-phase along grain boundaries. © Swerea KIMAB 2018

Place, publisher, year, edition, pages
2018.
Keywords [en]
aluminium, arsenic, beta-phase, Brass, corrosion resistance, lead, particles, simulation, Aluminum, Aluminum arsenide, Aluminum corrosion, Corrosion resistant alloys, Dealloying, Elementary particles, Grain boundaries, Heat resistance, Heat treatment, III-V semiconductors, Iron alloys, Microstructure, Residual stresses, Annealing condition, Corrosion performance, Dezincification, Knowledge gaps, Lead-free brass, Material compositions, Precipitation (chemical)
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Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-34509DOI: 10.1080/02670836.2018.1489619Scopus ID: 2-s2.0-85049209207OAI: oai:DiVA.org:ri-34509DiVA, id: diva2:1237570
Available from: 2018-08-09 Created: 2018-08-09 Last updated: 2019-07-02Bibliographically approved

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