中国激光, 2018, 45 (6): 0602002, 网络出版: 2018-07-05
TiC添加量对激光增材制造MC碳化物增强Inconel625复合材料组织及性能的影响 下载: 867次
Effect of TiC Addition on Microstructures and Properties of MC Carbide Reinforced Inconel625 composites by Laser Additive Manufacturing
激光技术 激光增材制造 镍基复合材料 原位生成 MC碳化物 laser technique laser additive manufacturing nickel-base composites in-situ reaction MC carbide
摘要
利用激光增材制造技术制备了MC碳化物增强Inconel625复合材料,研究了TiC添加量对复合材料显微组织、显微硬度和摩擦磨损性能的影响。结果表明,添加TiC的复合材料的显微组织由枝晶状γ基体与枝晶间呈弥散分布的增强体组成。随着TiC添加量的增大,复合材料中一次枝晶间距逐渐减小,而枝晶间碳化物含量和显微硬度逐渐增大,抗磨损性能比Inconel625合金提高80%以上。当TiC的质量分数为1%时,复合材料的屈服强度和抗拉强度比Inconel625合金分别提高了21.9%和27.5%,但延伸率减小。
Abstract
The MC carbide reinforced Inconel625 composites are prepared by the laser additive manufacturing technology, and the effects of TiC addition mass on the microstructures, micro-hardness and wear properties of the composites are investigated. The results show that the microstructure of composite with the addition of TiC is composed of dendritic γ matrix and interdendritic reinforcements with a dispersive distribution. With the increase of TiC addition, the primary dendritic spacing of the composites decreases, while the content of MC carbide as well as the micro-hardness increases gradually. The wear resistance properties of all the composites are improved by over 80%. When the TiC has a mass fraction of 1%, the yield strength and tensile strength of the composites are increased by 21.9% and 27.5%, respectively, but their elongation is reduced.
王舒, 程序, 田象军, 张纪奎. TiC添加量对激光增材制造MC碳化物增强Inconel625复合材料组织及性能的影响[J]. 中国激光, 2018, 45(6): 0602002. Shu Wang, Xu Cheng, Xiangjun Tian, Jikui Zhang. Effect of TiC Addition on Microstructures and Properties of MC Carbide Reinforced Inconel625 composites by Laser Additive Manufacturing[J]. Chinese Journal of Lasers, 2018, 45(6): 0602002.