| 放电等离子烧结的钛铝合金组织及氧化性能研究 |
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| 引用本文： | 陈华,薛涛.放电等离子烧结的钛铝合金组织及氧化性能研究[J].材料热处理学报,2008,29(1):58-61. |
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| 作者姓名： | 陈华 薛涛 |
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| 作者单位： | 长春工业大学材料学院,吉林,长春,130012 |
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| 摘 要： | 研究了TiH2-45Al-0.2Si-5Nb未球磨和球磨两种粉末的放电等离子烧结组织特征以及经1000℃、100h高温氧化后的氧化性能.结果表明,未经球磨粉末的烧结组织由层片状TiAl和Ti3Al相组成,而经球磨粉末的烧结组织由细小的颗粒状TiAJ和Ti3Al相组成.球磨粉末的烧结组织氧化速度低于未球磨粉末的烧结组织,形成了连续的Al2O3和TiO2混合氧化物层,具有良好的高温抗氧化性.
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| 关 键 词： | TiAl合金 放电等离子烧结 微观组织 高温抗氧化性 |
| 文章编号： | 1009-6264（2008）01-0058-04 |
| 收稿时间： | 2007-01-31 |
| 修稿时间： | 2007-06-18 |
Study on microstructure and oxidation characteristics of TiAl alloy prepared by spark plasma sintering |
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| CHEN Hua,XUE Tao.Study on microstructure and oxidation characteristics of TiAl alloy prepared by spark plasma sintering[J].Transactions of Materials and Heat Treatment,2008,29(1):58-61. |
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| Authors: | CHEN Hua XUE Tao |
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| Abstract: | The microstructure and high temperature oxidation behavior at 1000% for 100h for TiH2-45Al-0. 2Si-5Nb alloy prepared by spark plasma sintering using milled and un-milled powders were investigated. The results show that the microstructure of the alloy sintered using unmilled powder consists of lamellar TiAl and Ti3 Al phases, and that for milled powder is composed of finer nodular TiAl and Ti3 Al phases. The latter exhibits a lower oxidation rate due to the formation of the oxide layer composed of Al2O3 and TiO2 phase at high temperature. |
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| Keywords: | TiAl alloy spark plasma sintering microstructure high temperature oxidation resistance |
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