凝胶浇注法制备Ti-6Al-4V合金坯体及坯体性能的研究  

Study on preparation of Ti-6Al-4V alloy blank by gelcasting and its mechanical property

作　　者：茹敏朝[1] 郝俊杰[1] 王亚利[1] 郭志猛[1] 李艳[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《粉末冶金技术》2007年第6期453-457,共5页Powder Metallurgy Technology

摘　　要：将凝胶浇注工艺应用于金属Ti-6Al-4V合金粉末的成形,研究了高固相含量的Ti-6Al-4V合金粉末料浆的制备和坯体的抗弯强度。结果表明,料浆固相含量随粉末的松装密度和分散剂的增加而增加。坯体的抗弯强度随气雾化(GA)Ti-6Al-4V含量增加先增大后减小,随着坯体的固相含量增大而减小。当GA-Ti-6Al-4V的质量分数为80%、固相含量为50%(体积分数)时,坯体的抗弯强度最大,为18.5MPa。Gelcasting was applied to shaping of titanium alloy （Ti-6Al-4V） powders. The preparation of titanium alloy powder slurries with high solid loading was investigated. The results show that the solid loading content of slurry increases with the increasing of the powder apparent density and the dispersant in the slurry. Flexural strength of the blank increases firstly and then decreases with the increasing of （GA）Ti-6Al-4V content, and with the increasing of the solid volume loading content. The largest flexural strength is 18.5 MPa for blank with 80wt% （GA）Ti-6Al-4V and 50vol% solid loading.

关 键 词：凝胶浇注成形 钛合金 抗弯强度 

分 类 号：TF123.71[冶金工程—粉末冶金]