Three-dimensional modeling of effect of surface intermetallic phase on surface defects of Al-Fe-Si aluminum foils during twin-roll casting  

双辊铸轧法制备Al-Fe-Si合金铝箔过程中第二相对表面亮条影响的3D模拟(英文)

作　　者：朱远志[1,2] 万强[3] 李丙亮[2] 周峰[2] 张雅峰[1] 

机构地区：[1]北方工业大学机电学院,北京100144 [2]武汉科技大学材料与冶金学院,武汉430081 [3]中国工程物理研究院,绵阳621900

出　　处：《Transactions of Nonferrous Metals Society of China》2014年第2期477-483,共7页中国有色金属学报（英文版）

基　　金：Project(51074117)supported by the National Natural Science Foundation of China;Project(2009CDA044)supported by the Foundation for Distinguished Young Scientists of Hubei Province,China;Projects(201104493,20100471161)supported by the China Postdoctoral Science Foundation

摘　　要：Scanning electron microscopy and X-ray energy dispersive spectrum analysis show that the clusters of intermetallic AlFeSi particle are distributed on or near the aluminum foil stock surfaces heterogeneously. 3D finite element modeling shows that these clusters of hard particles induce the fracture of the nano-scale lubricant oil film at first and further lead to severe deformation in the nearby aluminum foil substrate along the rolling direction. Consequently, the optical property in this region differs from that in the surroundings, resulting in surface defects.利用扫描电子显微镜、能谱分析以及3D有限元模拟等手段研究族聚第二相与表面亮条形成之间的关系。研究表明:铸轧铝箔毛料中的AlFeSi粒子呈族状分布在毛料表面或近表面。硬质团族粒子与冷轧时的纳米油膜相互作用,会使粒子附近的润滑油膜破裂,导致粒子与破裂区域的铝膜基体发生严重变形,与周边产生色差,形成表面亮条。

关 键 词：Al-Fe-Si alloy precipitated phase aluminum foils lubricant oil film twin-roll cast 3D modeling 

分 类 号：TG339[金属学及工艺—金属压力加工]