| M_2C Precipitate in Isothermal Tempering of High Co-Ni Alloy Steel |
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| 作者单位： | HU Zheng-fei,WU Xing-fang,LI Xiu-qiu(University of Science and Technology Beijing,);WANG Chun-xu(Central Iron Steel Research Institute,);FANG Xin(Fushun Special Steel Co,) |
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| 基金项目： | Item Sponsored by Scientific and Technological Brainstorm Project for Ninth Five-Year Plan of China( 970 60 90 0 ) |
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| 摘 要： | Secondary hardening alloy has been studied fordecades and emphases are focused on the mechanismof secondary hardening and carbides precipitationduring second hardening reaction.It has got to awide common view that alloy carbides replace ce-mentite during the aging time reaction in secondaryhardening alloy steel[1] .Many studies were conduct-ed on the alloy carbide precipitation mechanism[2 ,3]and it is well established that the secondary harden-ing is accomplished by the precipitation of fine …
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M2C Precipitate in Isothermal Tempering of High Co-Ni Alloy Steel |
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| HU Zheng-fei,WU Xing-fang,LI Xiu-qiu,WANG Chun-xu,FANG Xin. M2C Precipitate in Isothermal Tempering of High Co-Ni Alloy Steel[J]. Journal of Iron and Steel Research, 2001, 8(2): 56-58 |
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| Authors: | HU Zheng-fei WU Xing-fang LI Xiu-qiu WANG Chun-xu FANG Xin |
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| Abstract: | The ultra strength alloy steel with high content of Co and Ni is typical tempering martensite steel, and the secondary hardening is accomplished by the precipitation of fine scale alloy carbides with black white contrast until peak hardening. The crystal structure of precipitates was well determined as M 2C with hexagonal by micro beam diffraction. Observing in HREM, M 2C carbides were shown coherent with the ferrite matrix completely and have their own structure. |
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| Keywords: | ultra strength alloy steel carbide precipitation |
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