Precipitation behavior of carbides in high-carbon martensitic stainless steel
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Qin-tian Zhu
, Jing Li , Cheng-bin Shi , Wen-tao Yu , Chang-min Shi and Ji-hui Li
Abstract
A fundamental study on the precipitation behavior of carbides was carried out. Thermo-calc software, scanning electron microscopy, electron probe microanalysis, transmission electron microscopy, X-ray diffractometry and high-temperature confocal laser scanning microscopy were used to study the precipitation and transformation behaviors of carbides. Carbide precipitation was of a specific order. Primary carbides (M7C3) tended to be generated from liquid steel when the solid fraction reached 84 mol.%. Secondary carbides (M7C3) precipitated from austenite and can hardly transformed into M23C6 carbides with decreasing temperature in air. Primary carbides hardly changed once they were generated, whereas secondary carbides were sensitive to heat treatment and thermal deformation. Carbide precipitation had a certain effect on steel-matrix phase transitions. The segregation ability of carbon in liquid steel was 4.6 times greater that of chromium. A new method for controlling primary carbides is proposed.
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© 2017, Carl Hanser Verlag, München
Articles in the same Issue
- Contents
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- Digital material representation concept applied to investigation of local inhomogeneities during manufacturing of magnesium components for automotive applications
- Austenite to polygonal-ferrite transformation and carbide precipitation in high strength low alloy steel
- Precipitation behavior of carbides in high-carbon martensitic stainless steel
- Enthalpies of mixing in binary liquid alloys of lutetium with 3d metals
- Investigation of the 600 °C isothermal section of the Fe–Al–Ce ternary system
- The effect of high Al content on the microstructure and mechanical properties of Mg-xAl alloys processed by equal channel angular pressing
- Mechanical properties, bond strength and microstructural evolution of AA1060/TiO2 composites fabricated by warm accumulative roll bonding (WARB)
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- Numerical predictions and experimental investigation of the temperature distribution of friction stir welded AA 5059 aluminium alloy joints
- DGM News
- DGM News
Articles in the same Issue
- Contents
- Contents
- Original Contributions
- Digital material representation concept applied to investigation of local inhomogeneities during manufacturing of magnesium components for automotive applications
- Austenite to polygonal-ferrite transformation and carbide precipitation in high strength low alloy steel
- Precipitation behavior of carbides in high-carbon martensitic stainless steel
- Enthalpies of mixing in binary liquid alloys of lutetium with 3d metals
- Investigation of the 600 °C isothermal section of the Fe–Al–Ce ternary system
- The effect of high Al content on the microstructure and mechanical properties of Mg-xAl alloys processed by equal channel angular pressing
- Mechanical properties, bond strength and microstructural evolution of AA1060/TiO2 composites fabricated by warm accumulative roll bonding (WARB)
- Effect of graphite content on the tribological behavior of Al/2SiC/Gr hybrid nano-composites processed via mechanical milling
- Numerical predictions and experimental investigation of the temperature distribution of friction stir welded AA 5059 aluminium alloy joints
- DGM News
- DGM News