Research on Ti-Al inter metallic compound matrix FRM

Ti-Al金属间化合物基体FRM的研究

• 批准号: 03452261
• 负责人: ONZAWA Tadao
• 金额: $ 4.22万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-03452261/
• 关键词: FRM; INTERMETALIC COMPOUND; SiC FIBER; ADHESION PROCESS; REACTION PROCESS; COMPUTER SIMULATION; CONDITION SELECTING; MATERIAL SELECTION; チタン; アルミニウム; チタンアルミ; Ti_3Al

Fiber-reinforced inter metallic compounds are promising as structural materials in high temperature environments. The forming condition of the material and the using condition are result in the mechanical properties of the material. In this work, the Fiber-reinforced inter metallic compounds were formed using the hot-pressing and the mechanical properties were investigate. Result is summarized as follows ;1. on the adhesion process between the matrix film and the SiC fiber When the hot pressing is used to formed the materials, the perfect adhesion is required between the matrix film and between the film and the fiber. In order to estimate the necessary condition for the hot-pressing, an deformation model ,which takes account of the plastic and creep deformation mechanism, was proposed. The necessary condition of hot pressing for sufficient adhesion was predicted in many case. The experimental results suggest the applicability of the model.2. on the reaction process Inter facial reaction layer at the matrix-fiber interface became the start point of the fracture. The reaction rate for the composites was calculated by suing a reaction model. The experimental results suggest the applicability of the model.3. on the mechanical properties The fiber-reinforced inter metallic compound was formed by taking the two processes stated above into consideration. The tensile strength and the temperature dependence of it are investigated. It was suggested that the sufficient composite can be formed by using the prediction system of two mechanism stated above.

纤维增强金属间化合物在高温环境下作为结构材料具有广阔的应用前景。材料的成型条件和使用条件决定了材料的力学性能。本文采用热压法制备了纤维增强金属间化合物，并对其力学性能进行了研究。研究结果如下：1.在热压成型时，基膜与碳化硅纤维之间的粘结过程中，基膜与基膜之间以及基膜与纤维之间必须具有良好的粘结性能。为了估算热压的必要条件，提出了一个考虑塑性和蠕变变形机制的变形模型。在许多情况下，预测了热压以获得充分附着力的必要条件。实验结果表明了该模型的适用性。在反应过程中，基体-纤维界面的界面反应层成为断裂的起点。采用反应模型计算了复合材料的反应速率。实验结果表明了该模型的适用性。在力学性能上，综合考虑上述两种工艺，形成了纤维增强金属间化合物。研究了它的抗拉强度和温度依赖性。结果表明，利用上述两种机制的预测系统，可以形成足够的复合材料。