英语翻译
本文以研究增强体体积分数不同的挤压态TiBw/Ti60复合材料的高温力学性能为目的.对增强体体积分数分别为0%,1%,3%,5%,7%的挤压态TiBw/Ti60复合材料进行高温(600°C、650°C、700°C、750°C、800°C)拉伸实验,研究TiBw/Ti60复合材料的高温力学性能.探究热处理工艺对钛基复合材料组织和性能的影响.探讨增强体体积分数与高温力学性能之间的关系.并观察不同温度下拉伸后的断口附近的SEM组织,分析其断裂过程.
观察高温拉伸断口附近的SEM组织发现:随着拉伸实验温度的升高,TiBw/Ti60复合材料主要的断裂形式由增强相的断裂变为界面脱粘,在800°C下拉伸断口附近的组织形貌可以观察到大量的孔洞.
通过高温拉伸实验数据分析得出:由于增强体的加入使TiBw/Ti60复合材料的高温力学性能增加.但并不是增强体体积分数越高,高温力学性能也越好.而是存在着一个高温力学性能最佳的体积分数.实验结果表明:增强体体积分数为5%的TiBw/Ti60复合材料的高温力学性能最好.
High temperature mechanical properties in order to study the reinforcement volume fraction of extruded TiBw/Ti60 composites for different purposes.Theincrease of the volume fraction were 0%,1%,3%,5%,7% of the extruded TiBw/Ti60 composites under high temperature (600 ° C,650 ° C,700 ° C,750 ° C,800 ° C) tensile test,high temperature mechanical properties of TiBw/Ti60 composites.Effect of heat treatment process on the properties and microstructure of titanium matrix composites.To explore the relationship between the volume fraction and high temperature mechanical properties of reinforced.To observe the effects of different temperature and tensile fracture of nearby SEM organization,analysis of the fracture process.
Observed near the elevated temperature tensile fracture surfaces of the SEM organization:with increasing tensile test temperature,the fracture form of TiBw/Ti60 composite material mainly by the enhancement of phase breaking intothe interfacial debonding,the microstructure near 800 ° C under the tensile fracture can be observed that a large number of holes.
Through the high temperature tensile test data analysis:the reinforcement was added to make the high temperature mechanical properties of TiBw/Ti60 composites increase.But not the volume fraction is higher and higher,the high temperature mechanical properties are better.But there is a high temperature mechanical properties of the optimal volume fraction.The experimental results show that:the high temperature mechanical properties of reinforcement volumefraction of TiBw/Ti60 composite 5% best.
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