Al/FeCrAl双金属复合材料的制备及试验研究  

Experimental Research and Preparation of Al/FeCrAl Bimetal Composite

作　　者：曾利奎[1] 杨平[1] 王亚军[2] 周燕 ZENG Likui;YANG Ping;WANG Yajun;ZHOU Yan(School of Intelligent Manufacturing and Automobile, Chongqing Technology and Business College, Chongqing 401520, China;School of Material Science and Engineering, Chongqing University, Chongqing 400030, China)

机构地区：[1]重庆工商职业学院智能制造与汽车学院,重庆401520 [2]重庆大学材料科学与工程学院,重庆400030

出　　处：《热加工工艺》2018年第8期87-89,共3页Hot Working Technology

基　　金：2017年重庆工商职业学院科学研究科研项目(YB2017-13)

摘　　要：采用固-液双金属复合铸造法对Al/FeCrAl进行复合,并通过此方法成功制备了Al/FeCrAl双金属复合材料。采用光学显微镜、扫描电镜、热处理试验和显微硬度计对材料界面组织和相组成进行了分析。结果表明：Al/FeCrAl双金属复合材料界面以冶金结合方式进行结合;热处理温度在500℃及以上时,Al元素向表面或者过渡层急速扩散并在过渡层产生氧化反应形成大量的Al2O3;复合材料显微硬度从喷涂层到基体层逐渐递减。The composite of Al and FeCrAl was prepared by solid-liquid bimetallic composite casting, and the Al/FeCrAl bimetallic composite was successfully prepared by this method. The microstructure and phase composition of the interface were analyzed by optical microscope, scanning electron microscope, heat treatment test and microhardness meter. The test results show that, the interface of Al/FeCrAl bimetallic composites is bonded by metallurgical bonding. When the heat treatment temperature is 500 ℃ and above, Al element diffuses rapidly to the surface or the transition layer and a large amount of Al2O3 is formed in the transition layer by oxidation reaction. The microhardness of the composites decreases gradually from spray coating to substrate layer.

关 键 词：Al/FeCrAl 双金属 复合材料 显微组织 

分 类 号：TB331[一般工业技术—材料科学与工程]