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Mo对NbCr2/ Nb合金组织及性能影响
作者:
作者单位:

1.南昌航空大学;2.南昌大学 高等研究院

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)


Effect of Mo on Microstructure and properties of NbCr2/Nb Alloy
Author:
Affiliation:

1.Nanchang Hongkong University;2.Nanchang University

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    摘要:

    采用机械合金化+热压工艺制备了NbCr2/Nb-XMo(X=0,2.5,5.0,7.5,10at.%)合金，研究了合金元素Mo对NbCr2/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NbCr2组成； Mo的添加使得NbCr2/Nb的相界面处应力增加,使得NbCr2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NbCr2/Nb合金在保持高强度的同时,具有良好的塑性和韧性。

    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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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.[Deng Li-ping, Lu Shi-qiang, Tang Bin-bing, Lei Zhi-li, Gao Jun. Effect of Mo on Microstructure and properties of NbCr2/Nb Alloy[J]. Rare Metal Materials and Engineering,2019,48(5):1476~1480.]
DOI：10.12442/j. issn.1002-185X.20180042

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  • 收稿日期:2018-01-11
  • 最后修改日期:2018-02-26
  • 录用日期:2018-03-12
  • 在线发布日期: 2019-06-04

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