Microstructure impacts on mechanical properties in a high temperature austenitic stainless steel

D. Purdy, P. J. Maziasz, J. Wharry, C. Dolph

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Austenitic and super-austenitic stainless steels are a critical component of the spectrum of high temperature materials. With respect to power generation, alloys such as Super 304H and NF709 span a gap of capability between ferritic and martensitic high chromium steels and nickel-based alloys in boiler tube applications for both conventionally fired boilers and heat-recovery steam generators (HRSG). This research explores a wrought version of a cast austenitic stainless steel, CF8C-Plus or HG1OMNN, which offers promise in creep strength at relatively low cost. Various manufacturing techniques have been employed to explore the impact of wrought processing on nano-scale microstructure and ultimately performance, especially in high temperature creep. Transmission electron microscopy has been used to quantify and characterize the creep-strengthening particles examining the relationship between traditional melting and extrusion as compared to powder metallurgy.

Original languageEnglish (US)
Title of host publicationAdvances in Materials Technology for Fossil Power Plants - Proceedings from the 8th International Conference
EditorsJohn Shingledecker, J. Siefert, Jonathan Parker
PublisherASM International
Pages377-387
Number of pages11
ISBN (Electronic)1627081313, 9781627081313
StatePublished - 2016
Externally publishedYes
Event8th International Conference on Advances in Materials Technology for Fossil Power Plants - Albufeira, Algarve, Portugal
Duration: Oct 11 2016Oct 14 2016

Publication series

NameAdvances in Materials Technology for Fossil Power Plants - Proceedings from the 8th International Conference

Conference

Conference8th International Conference on Advances in Materials Technology for Fossil Power Plants
Country/TerritoryPortugal
CityAlbufeira, Algarve
Period10/11/1610/14/16

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Renewable Energy, Sustainability and the Environment

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