Nano-size carbide-reinforced Ni matrix composite prepared by selective laser melting
Nano-size carbide-reinforced Ni matrix composite prepared by selective laser melting
复制标题
选区激光熔化制备纳米碳化物增强镍基复合材料
DOI：
10.1016/j.nanoms.2019.11.003
复制
发表时间：
2020-12-01
影响因子：
9.9
通讯作者：
Sun, Baode
中科院分区：
文献类型：
--
作者：
Wang, Rui;Zhu, Guoliang;Sun, Baode
热稳定的纳米陶瓷颗粒可以改善合金的显微组织稳定性和高温性能，是高温合金的首选增强材料。采用选择性激光熔化法制备了致密无裂纹的碳化物增强GTD222（镍基高温合金）复合材料。TiC纳米颗粒在SLMed TiC/GTD222复合材料中的分布呈三维网络结构。力学试验表明，与SLMed GTD222高温合金相比，SLMed TiC/GTD222复合材料具有更高的强度（UTS 1/4 1320 MPa, YS 1/4 1100 MPa）。讨论了纳米碳化物增强GTD22合金独特的显微组织及其优异的力学性能。
Thermally stable nano-size ceramic particles are the preferred reinforcements for superalloys as they improve the alloys' microstructural stability and high-temperature properties. In this work, very dense and crack-free carbidereinforced GTD222 (nickel-based superalloy) composites were prepared via selective laser melting (SLM). The distribution of TiC nanoparticles presents a three-dimensional (3D) network structure in the SLMed TiC/GTD222 composite. Mechanical testing revealed that the SLMed TiC/GTD222 composite has superior strength (UTS 1/4 1320 MPa, YS 1/4 1100 MPa) compared to the SLMed GTD222 superalloy. The GTD22 alloy reinforced with carbide nanoparticles' distinctive microstructure and its excellent mechanical properties for is discussed.