The identification of a silicide phase and its crystallographic orientation to ferrite within a complex stainless steel

David Bowden, David Stewart, Michael Preuss

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Abstract

Recently, a high-hardness intermetallic phase, named π-ferrosilicide, has been identified within a stainless steel alloy intended to replace Co-based hardfacings within pressurised water reactors. The present study explores the evolution and relationship of the π-ferrosilicide and ferrite phases after a hot isostatic pressing cycle, compared to a cast π-ferrosilicide microstructure. Electron backscatter diffraction is used to identify two orientation relationships between the π-ferrosilicide and ferrite phases. Due to variant selection and growth of the interdendritic π-ferrosilicide within the gas-atomised hardfacing alloy powder, a microtexture develops within this phase with potential implications for the mechanical properties of the alloy.
Original languageEnglish
JournalJ. Nucl. Mater.
Publication statusAccepted/In press - 20 Feb 2019

Research Beacons, Institutes and Platforms

  • Dalton Nuclear Institute

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