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Microscopic Study of Carbide Precipitation during Heat Treatment of 35Cr–4C High Chromium Cast Iron.
- Source :
- Transactions of the Indian Institute of Metals; Dec2022, Vol. 75 Issue 12, p3017-3028, 12p
- Publication Year :
- 2022
-
Abstract
- The carbide precipitation behavior of 35 wt%Cr–4 wt%C (35Cr–4C) Hypereutectic High Chromium Cast Iron (HHCCI) during heat treatment was investigated by means of scanning electron microscope and transmission electron microscope, and the effect of rare earth magnesium (RE-Mg) modification on the microstructure evolution and wear resistance of 35Cr–4C cast iron was also studied. The as-cast structure of 35Cr–4C HHCCI is mainly composed of primary carbides, eutectic carbides and austenite matrix. After quenching, there are secondary carbides M<subscript>7</subscript>C<subscript>3</subscript> and M<subscript>23</subscript>C<subscript>6</subscript> precipitation in the martensite matrix. After tempering, more secondary carbides will be formed and the main precipitate phase is M<subscript>23</subscript>C<subscript>6</subscript>. After heat treatment of RE-Mg modified HHCCI, more secondary carbides are precipitated, and the distribution in the matrix is more uniform, and the wear resistance is higher than that of unmodified HHCCI. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09722815
- Volume :
- 75
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Transactions of the Indian Institute of Metals
- Publication Type :
- Academic Journal
- Accession number :
- 160202184
- Full Text :
- https://doi.org/10.1007/s12666-022-02690-7