(哈尔滨工业大学 材料科学与工程学院，哈尔滨 150001)
摘 要: 采用真空热压烧结法制备了致密度为98.5%的20Wf/30ZrCp/W复合材料，分析测试了复合材料的相组成、微观组织结构和力学性能。结果表明：W丝在复合材料中分布较均匀，且基本平行于热压面；W与ZrC在界面处发生互扩散，形成了(Zr,W)C固溶体；W丝与基体间的界面结合强度过高，并发生明显的再结晶现象；加入W丝未能起到强韧化作用。复合材料的抗弯强度和断裂韧性分别为504 MPa和9.48 MPa·m1/2。
关键字: 钨基复合材料； 钨丝； 组织结构； 力学性能
20Wf/30ZrCp/W composite
（School of Materials Science and Engineering,
Harbin Institute of Technology, Harbin 150001, P.R.China）
Abstract:The composition, microstructure and mechanical properties of 20Wf/30ZrCp/W composite produced using hot pressing technique were investigated. Results show that the relative density reaches 98.5%. The tungsten wires are well distributed within the ZrCp/W matrix with preferred orientation. There is an interdiffusion of Zr and W in ZrCp/W interface, which results in (Zr, W)C solid solution forming and a strong bond between ZrC particle and tungsten wire or tungsten. The tungsten wires are recrystallized and have no strengthening and toughening effects on ZrCp/W matrix. The strength and fracture toughness of 20Wf/30ZrCp/W composite are 504 Pa and 9.48 MPa·m1/2, respectively.
Key words: tungsten matrix composite; tungsten wire; microstructure; mechanical properties
