置氢量对烧结制备Ti-6Al-4V合金的显微组织演变的影响  

Effect of Hydrogen Concentration on Microstructure Evolution of Ti-6Al-4V Alloy Prepared by Sintering

作　　者：程新龙 权小勤[1] 王俊昌[2] 王培和 秦越 CHENG Xinlong;QUAN Xiaoqin;WANG Junchang;WANG Peihe;QIN Yue(Institute of Automobile,Anyang Vocational and Technical College,Anyang 455000 China;School of Mechanical Engineering,Anyang Institute of Technology,Anyang 455000,China;Aviation Industry Jinan Special Structure Institute,Ji＇nan 250000,China)

机构地区：[1]安阳职业技术学院汽车学院,河南安阳455000 [2]安阳工学院机械工程学院,河南安阳455000 [3]航空工业济南特种结构研究所,山东济南250000

出　　处：《热加工工艺》2018年第16期74-76,共3页Hot Working Technology

基　　金：河南省高等职业教育创新发展行动计划(XM-2)

摘　　要：通过将Ti H和和Al-V粉末按一定比例配置对Ti-6Al-4V合金进行置氢烧结。利用SEM、XRD研究了合金组织结构与置氢量之间的关系。结果表明：未添加氢下Ti-6Al-4V合金基体中形成了粗大的片层状α相与α＋β相片层束结构;置氢烧结明显提高了Ti、V、Al原子的扩散能力,加快了晶粒粗化现象,形成网状组织结构。当试样中的置氢量上升后,基体中含有的α相比例逐渐降低,而β相比例持续增大,基体中的α相与β相形态也发生了更加显著的变化,β相逐渐变为板状,α相则变得更加细小并间断性地分布在β相边缘部位。当置氢量增大后,α相对应的衍射峰强度降低,β相对应的衍射峰强度则发生了明显增加;在置氢量等于0.4%时,合金中生成了δ氢化物组织。The hydrogen sintering of Ti-6 Al-4 V alloy was carried out by using a certain proportion of Ti H and Al-V powder, and the relationship between the structure of the alloy and the amount of hydrogen was studied by SEM and XRD.The results show that thick layered α phase in α＋β beam structure form in Ti-6 Al-4 V alloy without adding hydrogen. During hydrogen sintering, the diffusion ability of Ti, V and Al atoms improve, which can accelerate the grain coarsening phenomenon, and then a network structure forms. When the amount of hydrogen in the sample increases, the proportion of αphase in the matrix gradually decreases, while the proportion of β phase continues to increase. In the matrix, there are more significant changes in the α phase and β phase, and the β phase gradually changes into the plate, and the α phase becomes smaller and distributes in intergranular of β phase. When the hydrogen content increases, the diffraction peak intensity corresponding to α phase decreases, and the diffraction peak intensity corresponding to β phase increases obviously. When the hydrogen content is equal to 0.4%, the δ hydride microstructure appears in the alloy.

关 键 词：置氢烧结 TI-6AL-4V合金 显微组织 

分 类 号：TG379[金属学及工艺—金属压力加工] TG146.23[一般工业技术—材料科学与工程]