复合轧制氧化铝-铝基复合材料工艺与界面结合机制  

Process and Interface Bonding Mechanism of Alumina Reinforced Aluminum Matrix Composite Board by Sandwich Rolling

作　　者：沈德久[1] 蔡景瑞[1] 吴国瑞 宁博 郑艺[1] 

机构地区：[1]燕山大学亚稳材料制备技术与科学国家重点实验室,秦皇岛066004 [2]中信戴卡股份有限公司,秦皇岛066003

出　　处：《机械工程学报》2013年第22期91-96,共6页Journal of Mechanical Engineering

基　　金：国家自然科学基金(51171167);河北省自然科学基金(A2011203068)资助项目

摘　　要：通过6061铝合金双板复合轧制成功制备内含微弧氧化陶瓷颗粒的新型复合板,为金属基复合材料制备开辟一条新途径。用撕裂法测试复合板的结合强度结果表明:铝板前处理、轧制温度和压下率都对该复合板的结合强度(决定复合材料力学性能的重要指标)有明显的影响,并在本试验温度范围内结合强度出现了极大值。由温度因素研究得知,与裂口机制和镶嵌机制相关的回复再结晶软化、金属原子动能升高和氧化隔离3个次级机制存在于本试验研究条件下,并且由温度因素影响它们的主导作用地位。在轧制过程中微弧氧化铝合金表面陶瓷层破裂形成的陶瓷颗粒,使双板构成镶嵌结合关系。A new type of composite board containing micro-arc oxidation ceramic particles is successfully prepared by sandwich rolling, opening up a new way for preparing metal-matrix composites. By tearing test, it is shown that the aluminum board pretreatment, rolling temperature and reduction ratio are important effect factors on the bonding strength of the composite board, and a maximum bonding strength appeared within the test temperature range. It is known by temperature factor research that three inferior level mechanisms, the reversion-recrystallization softening, metal atomic energy rising and oxidation layer related to fissure and mosaic mechanisms exist in the present experimental conditions, and their dominant role positions are affected by the temperature factor. During the rolling process, the ceramic particles from the fragmentized micro-arc oxidation layer on aluminum alloy surface led to the formation of a mosaic combination relationship between the double plates.

关 键 词：微弧氧化 轧制 结合强度 陶瓷层 复合材料 

分 类 号：TG335[金属学及工艺—金属压力加工]