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Title: Review of Solid State Consolidation Processing Techniques of ODS Steels (Hot Extrusion, Hot Isostatic Pressing, Spark Plasma Sintering, and Stir Friction Consolidation): Resulting Microstructures and Mechanical Properties

Journal Article · · The Journal of The Minerals, Metals & Materials Society
 [1];  [2];  [2]
  1. North Carolina State University, Raleigh, NC (United States); North Carolina State University
  2. North Carolina State University, Raleigh, NC (United States)

This paper reviews the solid-state consolidation processing techniques for Oxide Dispersion Strengthened steels and compares them in terms of the resulting microstructure and reported mechanical properties. Synthesis techniques include hot extrusion, hot isostatic pressing, spark plasma sintering and friction consolidation. The effects of process parameters on the resulting microstructures and performance are discussed for each technique. Average oxide size, average grain size, and porosity are compared across techniques, as well as mechanical strength and ductility. Across consolidation techniques where temperature can be controlled, a low sintering temperature with a high sintering pressure is favorable for keeping oxide sizes, grain sizes, and porosity low. The use of yttrium and titanium for oxide formation has been evidenced to reduce oxide sizes, and tungsten additions have been shown to improve strength. Current literature suggests that the more mature hot extrusion technique produces stronger steel with consistently fine oxides, while other alternative solid-state consolidation, while promising, offer margin for improvement.

Research Organization:
North Carolina State University
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0003996
OSTI ID:
2453862
Journal Information:
The Journal of The Minerals, Metals & Materials Society, Journal Name: The Journal of The Minerals, Metals & Materials Society; ISSN 1047-4838
Country of Publication:
United States
Language:
English

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