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Effect of copper additions to Hercules<sup>TM</sup> and Type 316 stainless steel

Abstract

Copper additions of approximately 20 wt% were added to Mintek’s cost effective low nickel austenitic stainless steel Hercules TM alloy, as well as to an anti-pathogen stainless steel of Lui et al. The alloys were produced using the plasma-melting feature of an Amazmet rePowder system, and characterised in the as-cast condition. The compositions of the alloys were confirmed using spark emission spectrometry and x-ray fluorescence spectrometry. The commercial Type 316SS and HerculesTM alloys showed fully austenitic microstructures. The Cu modified alloys contained copper-coloured precipitates within and austenitic matrix. The copper additions had a detrimental effect on the corrosion performance of the alloys, as would be expected.

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DOI: 10.1051/matecconf/202440603010

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