| Mo对NbCr2/ Nb合金组织及性能影响 |
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| 引用本文： | 邓莉萍,鲁世强,汤斌兵,雷志立,虞文.Mo对NbCr2/ Nb合金组织及性能影响[J].稀有金属材料与工程,2019,48(5):1476-1480. |
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| 作者姓名： | 邓莉萍 鲁世强 汤斌兵 雷志立 虞文 |
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| 作者单位： | 南昌航空大学;南京航空航天大学;南昌大学 |
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| 基金项目： | 国家自然科学基金(51074092),江西省自然科学基金(20161BAB206113),江西省教育厅落地计划项目(KJLD14056),江西省教育厅科技计划(GJJ160677) |
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| 摘 要： | 采用机械合金化+热压工艺制备了NbCr_2/Nb-XMo (X=0,2.5,5.0,7.5,10, at%)合金,研究了合金元素Mo对NbCr_2/Nb合金组织及性能的影响。结果表明:合金元素Mo主要存在于Nb基体中,对合金的物相不产生明显影响,合金仍由Nb固溶体和NbCr_2组成;Mo的添加使得NbCr_2/Nb的相界面处应力增加,导致NbCr_2颗粒中的层错/孪晶的密度增加,并促进了Nb基体中位错的运动,从而使得NbCr_2/Nb合金在保持高强度的同时,具有良好的塑性和韧性。
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| 关 键 词： | NbCr2/ Nb合金 合金元素Mo 晶体缺陷 性能 |
| 收稿时间： | 2018/1/11 0:00:00 |
| 修稿时间： | 2018/2/26 0:00:00 |
Effect of Mo on Microstructure and properties of NbCr2/Nb Alloy |
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| Deng Li-ping,Lu Shi-qiang,Tang Bin-bing,Lei Zhi-li and Gao Jun.Effect of Mo on Microstructure and properties of NbCr2/Nb Alloy[J].Rare Metal Materials and Engineering,2019,48(5):1476-1480. |
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| Authors: | Deng Li-ping Lu Shi-qiang Tang Bin-bing Lei Zhi-li and Gao Jun |
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| Affiliation: | Nanchang Hongkong University,Nanchang Hongkong University,Nanchang University,Nanchang Hongkong University,Nanchang Hongkong University |
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| Abstract: | NbCr2/Nb-XMo (X=0, 2.5, 5.0, 7.5, 10at.%) alloys have been prepared by mechanical alloying and hot pressing. The effects of Mo on microstructures and properties of the NbCr2/Nb alloy have been studied. The results show that the additions of Mo element do not change the phase components of the NbCr2/Nb alloy, which are composed of Nb solid solution and NbCr2. Adding alloying element Mo can increase the stress at the NbCr2 / Nb phase interfaces, which promotes the increase of stacking fault /twinning in the NbCr2 particles and the movement of dislocations in the Nb matrix. The NbCr2 / Nb alloy adding with appropriate amount of alloying element Mo can maintain good plasticity and toughness as well as higher strength. |
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| Keywords: | NbCr2/Nb alloy alloying element Mo crystal defects properties |
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