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 and zirconium hydride powder were ball milled,die pressed and vacuum sintered combined with a powder metallurgy method,and then Ti-13Nb-13Zr alloy was prepared.The sample was investigated by metallographic microscope,SEM and XRD.The result shows that through 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 on XRD data reveals that the σ-Ti and σ-Zr are hcp structure while the β-Ti,Nb and β-Zr are bcc structure.
作者
王静哲
张家敏
易健宏
甘国友
刘意春
Wang Jingzhe;Zhang Jiamin;Yi Jianhong;Gan Guoyou;Liu Yichun(Kunming University of Science and Technology,Kunming 650093,China;Key Laboratory of Advanced Materials in Rare & Precious and Nonferrous Metals,Ministry of Education,Kunming 650093,China;Key Laboratory of Advanced Materials of Yunnan Province,Kunming 650093,China;Kunming Key Laboratory of Advanced Materials in Rare & Precious and Nonferrous Metals,Kunming 650093,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2019年第1期152-158,共7页
Rare Metal Materials and Engineering
基金
国家自然科学基金(51464027)
