粉末冶金技术2026，Vol.44Issue(3)：404-410,7.DOI:10.19591/j.cnki.cn11-1974/tf.2025080005
烧结温度对多孔Ti600合金孔隙结构及力学性能的影响
Effect of sintering temperature on pore characteristics and mechanical properties of porousTi600 alloys
于宗锐 1王耀奇 2赵志勇 1牛勇3
作者信息
- 1. 山东大学机电与信息工程学院,威海 264209
- 2. 中国航空制造技术研究院,北京 100023
- 3. 太原科技大学机械工程学院,太原 030024
- 折叠
摘要
Abstract
Using Ti600 high-temperature titanium alloy powders(Ti-6.0Al-2.8Sn-4.0Zr-0.5Mo-0.4Si-0.1Y)as the matrix and urea as the space holder,the porous titanium materials were fabricated via powder metallurgy.The effects of sintering temperature on the structural characteristics and mechanical properties of porous titanium materials were systematically investigated by optical metallographic microscope,scanning electron microscope(SEM),and universal mechanical testing machine.The results show that with the increase of sintering temperature,the pore walls of porous titanium gradually densify,and both the porosity and pore size exhibit the decreasing trend,the porosity decreases from 67.61％to 61.31％,and the average pore size reduces from 1.233 mm to 1.194 mm.The compressive strength rises continuously with temperature,reaching a peak of 82.08 MPa at 1300 ℃,then dropping to 78.20 MPa at 1400℃.The Young's modulus reaches the optimal value of 1.735 GPa at 1300℃,and decreases to 1.719 GPa at 1400℃ due to grain coarsening.The energy absorption efficiency peaks at 28.131 MJ/m3 at 1300℃.Comprehensively considering the structural characteristics and performance,the optimal sintering temperature is determined as 1300℃.The pore walls are fully densified with the uniform pore distribution at 1300℃,and the porous titanium simultaneously achieves the highest compressive strength and optimal energy absorption capacity.关键词
Ti600合金/多孔钛/粉末冶金法/烧结工艺/孔结构/力学性能Key words
Ti600 alloys/porous titanium/powder metallurgy process/sintering process/pore structure/mechanical properties分类
矿业与冶金引用本文复制引用
于宗锐,王耀奇,赵志勇,牛勇..烧结温度对多孔Ti600合金孔隙结构及力学性能的影响[J].粉末冶金技术,2026,44(3):404-410,7.
