| Effect of sintering on microstructures and properties of sub-micron Ti （C, N）-based cermets |
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| 引用本文： | 余立新,熊惟皓,郑勇,李国安.Effect of sintering on microstructures and properties of sub-micron Ti （C, N）-based cermets[J].中国有色金属学会会刊,2004,14(3):485-490. |
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| 作者姓名： | 余立新 熊惟皓 郑勇 李国安 |
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| 作者单位： | [1]StateKeyLaboratoryofDie＆MouldTechnology,CollegeofMaterialsScienceandEngineering,HuazhongUniversityofScienceandTechnology,Wuhan430074,China [2]StateKeyLaboratoryofAdvancedTechnologyforMaterialsSynthesisandProcessing,WuhanUniverstyofTechnology,Wuhan430070,China [3]CollegeofMaterialsScienceandEngineering,ChinaThreeGorgesUniversity,Yichang443002,China |
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| 基金项目： | 国家自然科学基金，the Key Science and Technology Development Foundation of Hubei Province;China，国家重点实验室基金 |
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| 摘 要： | The influence of different sintering processes, including vacuum sintering, vacuum sintering followed by HIP and sintering-HIP, on the microstructure and properties of sub-micron Ti(C,N) cermets with various binder contents was studied. Image analysis based on back-scattered electrons image observations was used to determine the morphologic and structural characteristics. Transverse rupture strength(TRS), hardness, fracture toughness were measured and TRS data were treated by Weibull statistics further. It is shown that a very significant improvement in TRS can be obtained by HIP or sintering-HIP treatment for the alloys with lower and middle binder content at the controlled cooling rate, but the effect is not obvious for the alloys with higher binder content. HIP is also helpful for improving the hardness of sub-micron Ti(C,N) cermets, however, but can lower the fracture toughness. The varia-tion of these properties was interpreted in terms of the difference in morphologic and structural characteristics.
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| 关 键 词： | 粉末冶金 碳化钛 氮化钛 金属陶瓷 烧结 显微结构 性能 |
Effect of sintering on microstructures and properties of sub-micron Ti(C,N)-based cermets |
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| YU Li-xin,XIONG Wei-hao.Effect of sintering on microstructures and properties of sub-micron Ti(C,N)-based cermets[J].Transactions of Nonferrous Metals Society of China,2004,14(3):485-490. |
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| Authors: | YU Li-xin XIONG Wei-hao |
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| Affiliation: | YU Li-xin~1,XIONG Wei-hao~ |
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| Abstract: | The influence of different sintering processes, including vacuum sintering, vacuum sintering followed by HIP and sintering-HIP, on the microstructure and properties of sub-micron Ti(C,N) cermets with various binder contents was studied. Image analysis based on back-scattered electrons image observations was used to determine the morphologic and structural characteristics. Transverse rupture strength(TRS), hardness, fracture toughness were measured and TRS data were treated by Weibull statistics further. It is shown that a very significant improvement in TRS can be obtained by HIP or sintering-HIP treatment for the alloys with lower and middle binder content at the controlled cooling rate, but the effect is not obvious for the alloys with higher binder content. HIP is also helpful for improving the hardness of sub-micron Ti(C,N) cermets, however, but can lower the fracture toughness. The variation of these properties was interpreted in terms of the difference in morphologic and structural characteristics. |
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| Keywords: | Ti(C N) cermet sub-micron sintering process HIP |
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