单辊法制备快速凝固7A09铝合金  

Production of rapid solidifying 7A09 aluminum alloy by single roll

作　　者：夏龙[1] 刘洪伟[1] 

机构地区：[1]哈尔滨工业大学(威海)材料科学与工程学院,山东威海264209

出　　处：《轻合金加工技术》2010年第12期43-46,共4页Light Alloy Fabrication Technology

摘　　要：用单辊法制备快速凝固7A09铝合金条带,通过X射线衍射、扫描电镜、硬度测试等分析手段研究快速凝固7A09铝合金条带的显微组织与性能。结果表明,辊轮转速是影响成带能力的重要因素,当辊轮转速为1 500 r/min时制成的条带质量最好,随着冷却速度的增加,快速凝固7A09铝合金条带的显微组织细化程度及硬度得到了明显提高。Rapid solidification ribbon of 7A09 aluminum alloy has been produced by single roll method.The microstructure and properties of the rapid solidification ribbon are studied by X-ray diffraction（XRD）,scan electron microscope（SEM） and Vickers sclerometer.The results show that the rotate speed of the roller is the main parameter to affect the ability of ribbon formation,the ribbon can get the best quality while the roller rotating speed is 1500 rpm,the crystal dimension decreases and the hardness increases with increasing of rolling speed.

关 键 词：单辊法 7A09铝合金 快速凝固 

分 类 号：TG146.21[一般工业技术—材料科学与工程]