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Materials 2015, 8(11), 7342-7353; doi:10.3390/ma8115381

Microstructure Investigation of 13Cr-2Mo ODS Steel Components Obtained by High Voltage Electric Discharge Compaction Technique

1
Material Science Department, Moscow Engineering Physics University, Moscow 115409, Russia
2
Department of Nanomaterials and Nanotechnologies, National Research Tomsk Polytechnic University, Tomsk 634050, Russia
3
Department of Mechanical Engineering, San Diego State University, San Diego, CA 92182, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Jai-Sung Lee
Received: 9 October 2015 / Accepted: 27 October 2015 / Published: 2 November 2015
View Full-Text   |   Download PDF [4514 KB, uploaded 2 November 2015]   |  

Abstract

Refractory oxide dispersion strengthened 13Cr-2Mo steel powder was successfully consolidated to near theoretical density using high voltage electric discharge compaction. Cylindrical samples with relative density from 90% to 97% and dimensions of 10 mm in diameter and 10–15 mm in height were obtained. Consolidation conditions such as pressure and voltage were varied in some ranges to determine the optimal compaction regime. Three different concentrations of yttria were used to identify its effect on the properties of the samples. It is shown that the utilized ultra-rapid consolidation process in combination with high transmitted energy allows obtaining high density compacts, retaining the initial structure with minimal grain growth. The experimental results indicate some heterogeneity of the structure which may occur in the external layers of the tested samples due to various thermal and electromagnetic in-processing effects. The choice of the optimal parameters of the consolidation enables obtaining samples of acceptable quality. View Full-Text
Keywords: field-assisted; powder consolidation; steel; oxide dispersion strengthening field-assisted; powder consolidation; steel; oxide dispersion strengthening
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Bogachev, I.; Yudin, A.; Grigoryev, E.; Chernov, I.; Staltsov, M.; Khasanov, O.; Olevsky, E. Microstructure Investigation of 13Cr-2Mo ODS Steel Components Obtained by High Voltage Electric Discharge Compaction Technique. Materials 2015, 8, 7342-7353.

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