基于TiH_2粉末制备Ti-13Nb-13Zr合金的微观组织与结构
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摘要
利用TiH_2、ZrH_2的脱氢特性,结合粉末冶金方法,将TiH_2、Nb和ZrH_2粉末经混合球磨、压制成形,真空烧制得到Ti-13Nb-13Zr合金,对样品进行金相显微镜、SEM、XRD分析,结果表明:烧结坯体相对密度达到92.2%,合金主要组织为α+β型片状魏氏组织,且在合金形成过程中β稳定元素的Nb发挥作用,使得钛的β相在降温完成后仍稳定存在;α-Ti及α-Zr为六方密排(hcp)结构,β-Ti、Nb及β-Zr同为体心立方(bcc)结构。
Based on dehydrogenation properties of titanium hydride and zirconium hydride, titanium hydride powder, niobium andzirconium hydride powder were ball milled, die pressed and vacuum sintered combined with a powder metallurgy method, and then Ti-13 Nb-13 Zr alloy was prepared. The sample was investigated by metallographic microscope, SEM and XRD. The result shows thatthrough this process, the relative density of sintered body is 92.2%. SEM result indicates that platelet σ and platelet β exist in the alloy.During the formation of the alloy, due to the β stable element niobium, the β-phase is still in the alloy after cooling. Analysis based onXRD data reveals that the σ-Ti and σ-Zr are hcp structure while the β-Ti, Nb and β-Zr are bcc structure.
Based on dehydrogenation properties of titanium hydride and zirconium hydride, titanium hydride powder, niobium andzirconium hydride powder were ball milled, die pressed and vacuum sintered combined with a powder metallurgy method, and then Ti-13 Nb-13 Zr alloy was prepared. The sample was investigated by metallographic microscope, SEM and XRD. The result shows thatthrough this process, the relative density of sintered body is 92.2%. SEM result indicates that platelet σ and platelet β exist in the alloy.During the formation of the alloy, due to the β stable element niobium, the β-phase is still in the alloy after cooling. Analysis based onXRD data reveals that the σ-Ti and σ-Zr are hcp structure while the β-Ti, Nb and β-Zr are bcc structure.
引文
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[4]Hao Bin(郝斌).Titanium Industry Progress(钛工业进展)[J],1995,12(5):20
[5]Liu Xuehui(刘学晖),Xu Guang(徐广).Powder Metallurgy Industry(粉末冶金工业)[J],2006,10(3):18
[6]Lutjering G,Williams J C.Titanium[M].New York:Springer-Verlag Berlin Heidelberg Press,2003:91
[7]Wan Heli(万贺利),Xu Baoqiang(徐宝强),Dai Yongnian(戴永年)et al.Journal of Functional Materials(功能材料)[J],2012,43(6):700
[8]Wan Heli(万贺利),Xu Baoqiang(徐宝强),Yang Bin(杨斌)et al.Chinese Journal of Vacuum Science and Technology(真空科学与技术学报)[J],2012,32(6):539
[9]Wang Bixia(王碧侠),Lan Xinzhe(兰新哲),Zhao Xicheng(赵西成)et al.Chinese Journal of Rare Metals(稀有金属)[J],2006,30(5):671
[10]Li Jian(李健),Weng Qigang(翁启钢),Wu Haobo(吴浩波)et al.Mining and Metallurgical Engineering(矿冶工程)[J],2012,32(1):107
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[13]Xie Yuanjiang(谢远江).Titanium Industry Progress(钛工业进展)[J],2000(4):12
[14]Lee W S,Kao C H.Materials Science&Engineering A[J],2016,677:230
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[20]Adamane A R,Arnberg L,Fiorese E et al.International Journal of Metal Casting[J],2015,9(1):43
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[22]Gao Hongwu(高洪吾),Liu Shikui(刘士魁),Zhao Yanbo(赵彦波)et al.The Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2005,15(3):363
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[25]Li Xianjun(李献军).Titanium Industry Progress(钛工业进展)[J],2009(3):17
[26]Li Dawu(李大武),Sun Ting(孙挺),Yao Guangchun(姚广春)et al.Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2010,20(1):143
[27]Zhang Heng(张恒),Shen Huasen(沈华森),Che Xiaokui(车小奎)et al.Chinese Journal of Rare Metals(稀有金属)[J],2011,35(3):417
[28]Zhang Jiamin(张家敏),Yi Jianhong(易健宏),Gan Guoyou(甘国友)et al.Journal of Materials Engineering(材料工程)[J],2013(10):70
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