| Aluminum matrix composite reinforced by in-situ formed intermetallic Al3Ti |
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| 引用本文： | 赵玉厚,周敬恩,严文. Aluminum matrix composite reinforced by in-situ formed intermetallic Al3Ti[J]. 中国有色金属学会会刊, 2002, 12(4): 643-648 |
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| 作者姓名： | 赵玉厚 周敬恩 严文 |
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| 作者单位： | 赵玉厚,严文(Department of Materials Science and Engineering, Xi′an Ins titute of Technology, Xi′an 710032, China);周敬恩(School of Materials Science and Engineering, Xi′an Jiaotong University, Xi′ an 710049, China) |
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| 摘 要： | The reinforced phase of in-situ formed intermetallic compound Al3Ti with grain size about 0.5μm in the aluminum matrix composite was achieved by the method of liquied-solid reaction under specific condition.The orientations were also studied.The results show that under T6 heat treatment regime,the tensile strength,hardness,elastic modulus and elongation of Al3Ti/ZL101 in-itu composite are increased by 32.8%,14.4%,19.2% and 14.6% respectively in comparison with those of Zl101,Al3Ti is uniformly distributed in α（Al)matrix with a clear phase interface,and the orientation relationship between Al3Ti and α（Al)is (006)AlTi∥(022^-)Al3Ti∥(022^-)Al,[122^-]Al3Ti∥[110^-]Al.The strengthening mechanisms of Al3Ti/ZL101 in-situ composite is proved to be caused by fine grain size,spreading distribution and dislocation multiplication.
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| 关 键 词： | 铝基复合材料 Al3Ti 高温合金 金属间化合物 显微组织 机械性质 |
Aluminum matrix composite reinforced by in-situ formed intermetallic Al3Ti |
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| Abstract: | The reinforced phase of in-situ formed intermetallic compound Al3Ti with grain size about 0.5μm in the aluminum matrix composite was achieved by the met hod of liquid-solid reaction under specific condition. The orientations were also studied. The results show that under T6 heat treatment regime, the tensile strength, hardness, elastic modulus and elongation of Al3Ti/ZL101 in-situ composite are increased by 32.8%, 14.4%, 19.2% and 14.6% respectively in comparison with those of ZL101. Al3Ti is uniformly distri buted in α(Al) matrix with a clear phase interface, and the orientation relationship between Al3Ti and α(Al) is (006)Al3Ti∥(02-2)Al, [1-22]Al3Ti∥[11- 0]Al. The strengthening mechanisms of Al3Ti/ZL101 in-situ composite is proved to be caused by fine grain size, spreading distribution and dislocation multiplication. |
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| Keywords: | in situ composite microstructure mechanical properties reinforcement mechanism |
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