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首页> 外文会议>International Conference on Mechanical Science and Engineering >Preparation and Thermal Shock Properties of Al_2O_3p/40Cr Functionally Graded Composites Materials
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Preparation and Thermal Shock Properties of Al_2O_3p/40Cr Functionally Graded Composites Materials

机译：Al_2O_3P / 40CR功能梯度复合材料材料的制备和热休克特性

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摘要

Al_2O_3p/40Cr graded composite was prepared by the squeeze casting method, and the as-cast structure, hardness, thermal shock properties of the composites were preliminary tested. The results show that the microstructure is compact and the grains of the matrix is small in the composite layer. Al_2O_3 particles well-distributed in the 40Cr matrix in continuous trend. The Macro-interface of 40Cr substrate and composites layer transits naturally and has good continuity, moreover the micro-interface of Al_2O_3 particles and the matrix is dense without any cavities. While the macrohardness decreases with the Al_2O_3 content reduced gradually. At the 20°C～650°C condition of the cold and heat cycle, graded composites has superior thermal shock properties than uniform composite.
机译：通过挤压铸造方法制备Al_2O_3P / 40CR梯度复合材料，并且促进复合材料的抛光结构，硬度，热冲击性能进行初步测试。结果表明，微观结构紧凑，复合层中的基质颗粒很小。 Al_2O_3颗粒在连续趋势中在40cr矩阵中分布得很好。 40Cr基板和复合材料层的宏观接口自然地运转并且具有良好的连续性，而且al_2O_3颗粒的微界面和基质的致密界面而没有任何腔。虽然宏后度随着AL_2O_3内容逐渐减少而降低。在冷热循环的20°C〜650°C条件下，梯度复合材料具有比均匀的复合材料更高的热冲击性能。

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