| Effect of N on microstructure and mechanical properties of as-cast Ti-6Al alloy |
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| 作者姓名： | 王宏伟 米国发 朱兆军 曾松岩 |
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| 作者单位： | School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001，China，Dept. of Mechanical Engineering Henan Polytechnic University Jiaozuo 454150，China，School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001，China，School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001，China |
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| 摘 要： | Duetotheirhighspecificstrength,goodcorrosionresistance,goodhightemperatureproperties,titanium andtitaniumalloysareconsideredidealmaterialsforspace,oil,chemicalandmedicalindustries1-3].They alsohavepotentialapplicationintheautomobileindus try4-7].Titaniu…
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| 关 键 词： | 钛铝合金 铸造微观结构 机械性能 氮化物 |
| 文章编号： | 1005-9113（2006）01-0065-05 |
| 收稿时间： | 2004-11-18 |
Effect of N on microstructure and mechanical properties of as-cast Ti-6Al alloy |
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| WANG Hong-wei,MI Guo-fa,ZHU Zhao-jun,ZENG Songyan.Effect of N on microstructure and mechanical properties of as-cast Ti-6Al alloy[J].Journal of Harbin Institute of Technology,2006,13(1):65-69. |
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| Authors: | WANG Hong-wei MI Guo-fa ZHU Zhao-jun ZENG Songyan |
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| Abstract: | In-situ titanium matrix composites with N content of 0. 045-0. 27 wt% have been produced by a casting method. The microstructure and mechanical properties of as-cast materials have been observed and tested.The results show that when N content in Ti-6Al alloy is between 0. 045 wt% and 0. 27 wt%, the reinforcement is a compound of Ti, Al and N, and volume fraction of reinforcements increases with an increase of N content.The hardness, compressive strength and elastic modulus are all higher than that of the matrix alloy. With the increase of N content, the compressive strength, the hardness and the elastic modulus increase. Fracture surface analysis has also shown that the matrix alloy fractures in a ductile model and the composites fracture in a cleavage brittle model with characteristics of dimple and cleavage surface. |
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| Keywords: | Ti-6Al alloy Nitride as-cast microstructure mechanical properties |
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