Jin Haoyu, Hu Huie, Chi Junhan, Ma Yunfei, Su Xiaohong
Department of Chemistry and Materials, Naval University of Engineering, Wuhan 430033, China.
State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Materials (Basel). 2023 Jul 25;16(15):5212. doi: 10.3390/ma16155212.
This study investigated the interfacial characteristics of tungsten-particle-reinforced Zr-based bulk-metallic-glass composites (Wp/Zr-BMGs) with varying tungsten-particle sizes. To this end, Wp/Zr-BMGs with three different Wp sizes were fabricated using spark plasma sintering. Subsequently, the microstructures and interfacial structures of the Wp/Zr-BMGs were extensively examined, and the mechanical properties of the microzone at the Wp/Zr-BMG interface were evaluated using a nanoindentation method. The results revealed that the interfaces of Wp/Zr-BMGs, irrespective of the Wp size, exhibited dissolution-diffusion characteristics. Moreover, the thickness of the interface diffusion layer was positively correlated to the size of Wp. The addition of Wp enhanced the elastic modulus and hardness of Zr-BMGs at the interface, as these effects are inversely related to the Wp size. Furthermore, this study established a relationship between the interfacial mechanical properties and the interfacial characteristics of particle-reinforced bulk-metallic-glass composites. Thus, this study can serve as a guide for future research in the field of Wp/Zr-BMGs and similar particle-reinforced composites.
本研究调查了不同钨颗粒尺寸的钨颗粒增强锆基块状金属玻璃复合材料（Wp/Zr-BMGs）的界面特性。为此，使用放电等离子烧结法制备了三种不同钨颗粒尺寸的Wp/Zr-BMGs。随后，对Wp/Zr-BMGs的微观结构和界面结构进行了广泛研究，并使用纳米压痕法评估了Wp/Zr-BMG界面处微区的力学性能。结果表明，无论钨颗粒尺寸如何，Wp/Zr-BMGs的界面均呈现出溶解-扩散特性。此外，界面扩散层的厚度与钨颗粒尺寸呈正相关。钨颗粒的添加提高了Zr-BMGs在界面处的弹性模量和硬度，因为这些效应与钨颗粒尺寸呈反比关系。此外，本研究建立了颗粒增强块状金属玻璃复合材料的界面力学性能与界面特性之间的关系。因此，本研究可为未来Wp/Zr-BMGs及类似颗粒增强复合材料领域的研究提供指导。
