| Effect of vanadium and chromium on the microstructural features of V–Cr–Mn–Ni spheroidal carbide cast irons |
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| 作者姓名： | V.G.Efremenko ;K.Shimizu ;A.P.Cheiliakh ;T.V.Kozarevskaya ;K.Kusumoto ;K.Yamamoto |
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| 作者单位： | [1]Department of Metal Science and Heat Treatment of Metals, Pryazovskyi State Technical University, Mariupol, 87500, Ukraine; [2]Manufacturing and Engineering Design Center, Muroran Institute of Technology, Muroran, 050-8585, Japan |
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| 摘 要： | The objective of this investigation is to study the influence of vanadium（5.0wt%–10.0wt%） and chromium（0–9.0wt%） on the microstructure and hardness of Cr-V-Mn-Ni white cast irons with spheroidal vanadium carbides. The alloys＇ microstructural features are presented and discussed with regard to the distribution of phase elements. The structural constituents of the alloys are spheroidal VC, proeutectoid cementite, ledeburite eutectic, rosette-shaped carbide eutectic（based on M7C3）, pearlite, martensite, and austenite. Their combinations and area fraction（AF） ratios are reported to be influenced by the alloys＇ chemical composition. Spheroidized VC particles are found to be sites for the nucleation of carbide eutectics. Cr and V are shown to substitute each other in the VC and M7C3 carbides, respectively. Chromium alloying leads to the formation of a eutectic（γ-Fe ＋ М7С3）, preventing the appearance of proeutectoid cementite in the structure. Vanadium and chromium are revealed to increase the total carbide fraction and the amount of austenite in the matrix. Cr is observed to play a key role in controlling the metallic matrix microstructure.
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| 关 键 词： | 微观结构特征 铬合金化 钒碳化物 球状碳化物 球墨铸铁 清除率 CNI 共晶碳化物 |
Effect of vanadium and chromium on the microstructural features of V-Cr-Mn-Ni spheroidal carbide cast irons |
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| V.G.Efremenko,;K.Shimizu,;A.P.Cheiliakh,;T.V.Kozarevskaya,;K.Kusumoto,;K.Yamamoto.Effect of vanadium and chromium on the microstructural features of V-Cr-Mn-Ni spheroidal carbide cast irons[J].Journal of University of Science and Technology Beijing,2014(11):1096-1108. |
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| Authors: | VG Efremenko K Shimizu AP Cheiliakh TV Kozarevskaya K Kusumoto K Yamamoto |
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| Affiliation: | 1. Department of Metal Science and Heat Treatment of Metals, Pryazovskyi State Technical University, Mariupol, 87500, Ukraine
2. Manufacturing and Engineering Design Center, Muroran Institute of Technology, Muroran, 050-8585, Japan |
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| Abstract: | cast irons carbides microstructure vanadium chromium austenite pearlite |
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| Keywords: | cast irons carbides microstructure vanadium chromium austenite pearlite |
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