摘要
随着粉末冶金技术的快速发展,采用氢化钛粉代替钛粉作为主要原料制备钛合金已成为国内外的研究热点。以氢化钛粉和铝钒合金作为原料,使用粉末冶金法直接烧结Ti-6Al-4V合金,在烧结过程中直接脱脂、脱氢,得到Ti-6Al-4V合金烧结体试样,研究烧结温度和保温时间对烧结体试样致密度、硬度及显微组织的影响。结果表明:当烧结温度在1200℃,保温时间为240 min时,致密度达到95.47%;当烧结温度在1220℃,保温时间为270 min时,硬度达到411.30 HV;当烧结温度在1200℃,保温时间为240 min时,试样显微组织晶粒尺寸最细小。
With the rapid development of powder metallurgy technology, the use of hydrogenated titanium powder instead of titanium powder as the main raw material for the preparation of titanium alloy has become a research hotspot at home and abroad. In this paper, titanium hydride powder and aluminum-vanadium alloy were used as raw materials, and Ti-6Al-4V alloy was directly sintered by powder metallurgy prealloying method. Direct degreasing and dehydrogenation during sintering were carried out to obtain Ti-6Al-4V alloy sintered body samples. The sintering temperature and holding time were studied for the sintered body. The density, hardness and microstructure of the sample. The results show that when the sintering temperature is 1200 ℃, the holding time is 240 min, the density reaches 95.47%;when the sintering temperature is 1220 ℃, the holding time is 270 min, the hardness reaches 411.30 HV;when the sintering temperature is 1200℃, the holding time is at 240 min, the microstructure of the sample was the smallest.
作者
朱钰玲
杨绍利
马兰
ZHU Yuling;YANG Shaoli;MA Lan(College of Materials Science and Engineering,Xihua University,Chengdu 610039,Sichuan,China;College of Vanadium and Titanium,Panzhihua University, Panzhihua 617000, Sichuan,China)
出处
《四川冶金》
CAS
2019年第1期28-31,共4页
Sichuan Metallurgy
基金
攀枝花科技产业推进项目(编号:2018CYG3)
攀枝花钒钛资源综合利用科技创新支撑平台建设(编号:2013FZ0095)
关键词
氢化钛粉
TC4合金
烧结温度
保温时间
titanium hydride powder
Ti-6Al-4V alloy
sintering temperature
holding time
