TC4钛合金凝胶注模成形技术研究
Research on gelcasting technology of TC4 titanium alloy
冯钊红 1李馨 1邵艳茹 2郝俊杰 2何新波 1郭志猛 2杨芳1
作者信息
- 1. 北京科技大学新材料技术研究院,北京 100083;北京科技大学顺德创新学院,广东佛山 528399
- 2. 北京科技大学新材料技术研究院,北京 100083
- 折叠
摘要
凝胶注模技术作为一种低成本的近净成形的粉末冶金方法,解决了传统钛合金熔炼技术复杂,加工难度大,成本高等问题.本文以等比例的TC4钛合金氢化脱氢粉和球形粉为原料,采用低氧MBAM-HEMA粘结剂体系,配制出固含量55％,HEMA单体浓度30％,油酸含量0.60％的具有良好的流动性和高固相含量的浆料,经成形、脱脂、烧结,制备出相对密度99.5％,抗拉强度1 002 MPa,屈服强度933 MPa,伸长率8.3％的TC4钛合金,能够满足大部分钛零件实际使用需求.
Abstract
Gelcasting technology,as a low-cost near net shape powder metallurgy method,addresses the complexi-ties,processing difficulties,and high costs associated with traditional titanium alloy smelting techniques.In this ar-ticle,equal proportions of TC4 titanium alloy hydrogenated dehydrogenation powder and spherical powder are used as raw materials,employing a low oxygen MBAM-HEMA binder system to formulate a slurry with good flowability and high solid content.This slurry has a solid volume fraction of 55％,a HEMA monomer concentra-tion of 30％,and an oleic acid mass fraction of 0.60％.Following forming,degreasing,and sintering,TC4 titanium alloy with a relative density of 99.5％,tensile strength of 1 002 MPa,yield strength of 933 MPa,and elongation of 8.3％is produced.This alloy meets the practical needs of most titanium parts and holds significant potential for applications in titanium structural and decorative components.
关键词
粉末冶金/钛合金/凝胶注模/氢化脱氢/低成本Key words
powder metallurgy/titanium alloy/gelcasting/hydrogenation dehydrogenation/low-cost引用本文复制引用
出版年
2024
NETL
NSTL
万方数据