Wear Performance of incoloy 800HT and inconel 617 in various surface conditions for high-temperature gas-cooled reactor components

Pauly, Valentin; Kern, Joseph; Clark, Malcolm; Grierson, David S.; Sridharan, Kumar

doi:10.1016/j.triboint.2020.106715

Wear Performance of incoloy 800HT and inconel 617 in various surface conditions for high-temperature gas-cooled reactor components

Journal Article · Fri Oct 16 00:00:00 EDT 2020 · Tribology International

DOI:https://doi.org/10.1016/j.triboint.2020.106715· OSTI ID:1850500

Pauly, Valentin ^[1]; Kern, Joseph ^[2]; Clark, Malcolm ^[2]; Grierson, David S. ^[2]; Sridharan, Kumar ^[2]

Univ. of Wisconsin, Madison, WI (United States); Univ. of Wisconsin, Madison, WI (United States)
Univ. of Wisconsin, Madison, WI (United States)

Incoloy™ 800HT and Inconel™ 617 are primary candidate structural materials for high-temperature gas-cooled reactors (HTGRs). Impurities (e.g., H₂O, CH₄) in the coolant induce corrosion reactions that affect tribological behavior. We investigate the high-temperature tribological performance of the alloys under surface conditions including: conditioned in H₂O-containing helium at elevated temperatures, hardened via the carbon-diffusion Kolsterising® treatment, and conditioned after hardening. Initial friction coefficients and volume removed serve as metrics for wear performance. In this work, we find that wear mechanisms including scuffing, glaze-oxide formation, and oxide-layer wear and break-through are governed by surface hardness, chemistry, and applied load. The formation of a glaze-oxide layer is achieved with an oxide of sufficient mechanical integrity if the oxide-substrate interface is strong and the load is low.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Wisconsin, Madison, WI (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE; USDOE Office of Nuclear Energy (NE)

Grant/Contract Number:: NE0008548

OSTI ID:: 1850500

Alternate ID(s):: OSTI ID: 1809374

Journal Information:: Tribology International, Journal Name: Tribology International Journal Issue: C Vol. 154; ISSN 0301-679X

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

42 ENGINEERING
Engineering
Friction
High temperature
Scuffing
Wear

Wear Performance of incoloy 800HT and inconel 617 in various surface conditions for high-temperature gas-cooled reactor components

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