烧结温度对Ti-TiC/Ti层状复合材料组织与性能的影响
Effect of sintering temperature on microstructure and properties of Ti-TiC/Ti laminated composites
蒋梦玲 1龙文元 1季松 1陆一鸣 1于春鑫1
作者信息
- 1. 南昌航空大学航空制造工程学院,江西南昌 330063
- 折叠
摘要
向钛合金中引入均匀分布的增强相可以提高其强度和刚度,但是不可避免地会引起塑性和韧性的下降.受自然界珍珠贝壳结构和组分的启发,以纯钛片作为金属层材料,钛粉与碳粉作为强性层材料,采用放电等离子烧结法成功制备出Ti-TiC/Ti层状复合材料,并探索了烧结温度对Ti-TiC/Ti层状复合材料力学性能的影响.结果表明:当强性层中的混料摩尔比为Ti∶C=1.1时,烧结温度不易控制;当混料摩尔比为Ti∶C=1.2,烧结温度为1100℃时,制备出的Ti-TiC/Ti层状复合材料组织均匀,层状结构保持良好,抗弯强度性能最佳,达到819.8 MPa,且强性层中的硬度分布均匀.烧结温度为1150℃时,复合材料的抗弯强度下降.
Abstract
The addition of uniformly distributed reinforcing phases into titanium alloys can improve their strength and stiffness,but inevitably leads to a decrease in plasticity and toughness.Taking inspiration from the structure and composition of natural pearl shells,pure titanium sheets were used as the metal layer material,titanium powder and carbon powder were used as the enhancement layer material,Ti-TiC/Ti laminated composites were successfully prepared by spark plasma sintering method,and the influence of sintering temperature on mechanical properties of the Ti-TiC/Ti laminated composites was investigated.The results show that when the molar ratio of the mixed material in the enhancement layer is Ti∶C=1.1,the sintering temperature is difficult to control.When the molar ratio of Ti∶C=1.2 and the sintering temperature is 1100 ℃,the Ti-TiC/Ti laminated composites have a uniform microstructure,good layered structure,and the best bending strength performance,reaching 819.8 MPa.The hardness distribution in the enhancement layer is also uniform.When the sintering temperature is 1150 ℃,the bending strength of the composites decreases.
关键词
层状材料/原位反应/放电等离子烧结Key words
laminated material/in-situ reaction/spark plasma sintering引用本文复制引用
基金项目
2022年研究生创新专项资金项目(YC2022-019)
出版年
2024
NETL
NSTL
万方数据