主要参数对原位反应的影响分析
Effect of Main Parameters on In-situ Reaction
格日乐1, 田 芳2
点击：3577次 下载：0次
作者单位：1. 呼伦贝尔学院 工程技术学院, 内蒙古 呼伦贝尔 021008; 2. 包头职业技术学院 材料成型技术系, 内蒙古 包头014030)
中文关键字：复合材料； 原位反应； 液相线铸造
英文关键字：composite; in-situ reaction; liquidus casting
中文摘要：采用原位反应液相线铸造法制备Al2O3(P)/Al-Cu复合材料，并对反应进行了热力学分析。结果表明，熔体温度升高时，反应的诱导时间缩短；适量的引发剂能使反应诱导时间缩短；加大稀释剂量，反应诱导时间延长；原位Al2O3颗粒对该复合材料组织有细化和均匀化作用，当原位Al2O3颗粒含量达到5.3%时可得到细小均匀的蔷薇状组织；原位反应液相线铸造Al2O3(P)/Al-Cu复合材料的抗拉强度是纯铝的近2倍，但伸长率降低。
英文摘要：Al2O3(P) /Al-Cu composite was prepared by in-situ reactive liquidus casting method. The thermo-dynamic of the composite was analyzed. The results show that with the increase of melting temperature, the induction time of in-situ reactive gets shorter, and the induction time can be shorted by proper initiator; on the contrary, it can be prolonged when the diluent content exceeds; the granule of in-situ Al2O3 can be refined and the uniform microstructure of the composite is obtained. When the content of Al2O3 is 5.3%, the material microstructure is in rosette, tiny and uniform; the tensile strength of Al2O3(P) / Al-Cu composite is two times higher than pure aluminum, but the brinell hardness does not change significantly, and the elongation rate reduces.