| Use of electron microscopy on microstructure characterization of high chromium cast irons |
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| 引用本文： | J.T.H. Pearce,T. Chairuangsri,A. Wiengmoon,N. Poolthong,H. Nomura. Use of electron microscopy on microstructure characterization of high chromium cast irons[J]. 中国铸造, 2007, 4(1): 38-43 |
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| 作者姓名： | J.T.H. Pearce T. Chairuangsri A. Wiengmoon N. Poolthong H. Nomura |
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| 作者单位： | MTEC-National Metals and Materials Technology Centre，Department of Industrial Chemistry Chiang Mai University，Department of Physics Naresuan University，Division of Materials Technology King Mongkut's University of Technology Thonburi，Department of Materials Nagoya University，114 Paholyothin Rd Klong 1 Klong Luang Pathumthani 12120 Thailand Chiang Mai 50200 Thailand，Phitsanulok 65000 Thailand，Bangkok 10140 Thailand，464-8603 Japan |
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| 摘 要： | The physical metallurgy underlying the development of cast microstructures in abrasion resistant high chromium cast irons, and their structural modification by thermal treatments is relatively complex. Structural characterisation via electron microscopy therefore has a key role to play in furthering our understanding of the phase transformations that control the microstructures and hence the service performances of these irons as wear parts. This paper shows how both scanning and especially transmission electron microscopy can provide valuable information on the nature of eutectic and secondary carbides and on the matrix structures in these irons. Particular attention is given to current characterisation research on conventionally cast 30%Cr irons that are used for applications involving corrosive wear e.g. slurry pumps and on a semi-solid cast 27%Cr iron that has a potential for applications in industry.
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| 关 键 词： | 高铬铸铁 电子显微镜 显微结构 耐磨性 |
Use of electron microscopy on microstructure characterization of high chromium cast irons |
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| J.T.H. Pearce,T. Chairuangsri,A. Wiengmoon,N. Poolthong,H. Nomura. Use of electron microscopy on microstructure characterization of high chromium cast irons[J]. China Foundry, 2007, 4(1): 38-43 |
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| Authors: | J.T.H. Pearce T. Chairuangsri A. Wiengmoon N. Poolthong H. Nomura |
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| Abstract: | The physical metallurgy underlying the development of cast microstructures in abrasion resistant high chromium cast irons, and their structural modification by thermal treatments is relatively complex. Structural characterisation via electron microscopy therefore has a key role to play in furthering our understanding of the phase transformations that control the microstructures and hence the service performances of these irons as wear parts. This paper shows how both scanning and especially transmission electron microscopy can provide valuable information on the nature of eutectic and secondary carbides and on the matrix structures in these irons. Particular attention is given to current characterisation research on conventionally cast 30%Cr irons that are used for applications involving corrosive wear e.g. slurry pumps and on a semi-solid cast 27%Cr iron that has a potential for applications in industry. |
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| Keywords: | high chromium cast iron electron microscopy microstructure characterization |
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