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

Materials

Oleg Khasanov¹  Igor Bogachev²  Eugene Olevsky²  Artem Yudin²  Maxim Staltsov²  Evgeniy Grigoryev²  Ivan Chernov² 

[1] Department of Nanomaterials and Nanotechnologies, National Research Tomsk Polytechnic University, Tomsk 634050, Russia;Material Science Department, Moscow Engineering Physics University, Moscow 115409, Russia;

关键词: field-assisted;    powder consolidation;    steel;    oxide dispersion strengthening;   

DOI  :  10.3390/ma8115381

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown