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.]
Mo对NbCr2/ Nb合金组织及性能影响
投稿时间:2018-01-11  修订日期:2018-02-26
中文关键词:  NbCr2/ Nb合金  合金元素Mo  晶体缺陷  性能
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)
中文摘要:
      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。
Effect of Mo on Microstructure and properties of NbCr2/Nb Alloy
英文关键词:NbCr2/Nb alloy  alloying element Mo  crystal defects  properties
英文摘要:
      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.
作者单位E-mail
邓莉萍 南昌航空大学 denglp790331@yahoo.com.cn 
鲁世强 南昌航空大学  
汤斌兵 南昌大学 高等研究院  
雷志立 南昌航空大学  
虞文 南昌航空大学  
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