摘要
概述了作者研究组近年来在SiC纤维增强钛基复合材料研究领域开展的工作及取得的进展。采用具有自主知识产权的SiC纤维,研究了PVD先驱丝制备方法和真空热压/热等静压复合材料成形工艺,获得700℃拉伸强度>1500MPa的SiCf/Ti-6Al-4V复合材料,分别制备出长度>400mm和直径>200mm的钛基复合材料棒材和环形件。此外,分别采用粉末布与粉浆涂挂先驱丝两种低成本方法制备出钛基复合材料,确定了新的胶粘剂并优化了相关工艺参数。
The research and development of SiC fibre reinforced titanium matrix composites using proprietary fibre technology in the authors＇ laboratory is summarized in this paper. The physical vapor deposition method was used to prepare the precursor wire, and the SiC fibre reinforced Ti-6Al-4V composite was produced after vacuum hot pressing or hot isostatic pressing. The tensile fracture strength as high as 1500 MPa was obtained at 700℃ for the composites with sufficiently high volume fraction of the fibre. The composite bars with longer than 400 mm and the rings with greater than 200 mm in outer diameter were produced. The optimization of the processing parameters and the problems encountered in the low-cost technology based on the powder-cloth and powder-coated fibre methods were also discussed.
出处
《钛工业进展》
CAS
2005年第5期32-36,共5页
Titanium Industry Progress
