(1. 西北工业大学 凝固技术国家重点实验室，西安 710072,2. 河南科技大学 材料科学与工程学院，洛阳 471003)
摘 要:
关键字: 钨丝；Zr基非晶合金复合材料；动态性能；动态断裂；断口形貌
（1.State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China;2. School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471003, China）
Abstract:Tungsten fiber reinforced ZrTiCuNiBe metallic glass composites were fabricated by melt infiltrating casting method. The samples are 6 mm in diameter with aspect ratio of 1. They were tested by using Hopkinson pressure bar, SEM and XRD. The experimental results show that the dynamic compressive strength increases both with increasing volume fraction of W fiber and decreasing tungsten fiber diameter. The dynamic compressive strength of the composites is 2 600 MPa when the tungsten fibers are 60% in volume fraction and 0.25 mm in diameter. The failure mode is a mixed fracture mode consisting of share and splitting. The delamination of tungsten fibers are also found in the matrix. The typical melt and thermal-softening characteristic of Zr-based metallic glass matrix are found in the dynamic compressive process.
Key words: Tungsten fiber; Zr-based metallic glass matrix composites; dynamic mechanical properties; dynamic fracture; fracture surface
