主要参数对原位反应的影响分析  

Effect of Main Parameters on In-situ Reaction

作　　者：格日乐[1] 田芳[2] 

机构地区：[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

出　　处：《热加工工艺》2011年第18期98-100,共3页Hot Working Technology

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。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.

关 键 词：复合材料 原位反应 液相线铸造 

分 类 号：TG115.213.1[金属学及工艺—物理冶金]