Simulation of the rolling process of a laminated composite AMg3/D16/AMg3

IF 0.4 Q4 METALLURGY & METALLURGICAL ENGINEERING Obrabotka Metallov-Metal Working and Material Science Pub Date : 2023-09-15 DOI:10.17212/1994-6309-2023-25.3-6-18
Denis Salikhyanov, Nikolay Michurov
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Abstract

Introduction. Over the past decades, laminated composites based on aluminum alloys have been increasingly used in the aerospace and automotive industries. Laminated composites are usually produced by accumulative roll bonding, which results in the metallurgical bonding of initially prepared sheets. Hence, the main task of accumulative roll bonding is to obtain a reliable bond between materials. However, at present, the process of joining similar or dissimilar materials by plastic deformation is still a poorly understood phenomenon. In this regard, in recent years, methods of finite element modeling of the processes of joining materials have begun to develop intensively. The purpose of the work is to establish a relationship between stress-strain state parameters and the formation of a stable bond between aluminum alloys of different compositions. To achieve this goal, the following tasks are formulated: 1. Simulation of the laminated composite “AMg3/D16/AMg3” rolling process using data corresponding to physical experiments carried out at the Institute of Engineering Science of the Ural Branch of the Russian Academy of Sciences; 2. Selection and analysis of the most important stress-strain state parameters of the laminated composite “AMg3/D16/AMg3” rolling process. Research methods. Process simulation system Deform-3D was chosen as the main research tool. Results and Discussion. An analysis of the coordinate grid distortion and velocity vectors of material flow of layers revealed that the deformation is distributed inhomogeneously in the cross section after rolling: the outer layers flow more intensively compared to the middle layer. The maximum scatter of strain intensity ei in the cross section, observed at a maximum reduction ratio of 75%, is 12%. This allows one to accept for analytical calculations in the first approximation the assumption of deformation uniformity. A relationship is established between the beginning of the formation of a bond between composite layers and the threshold expansion of the contact surface and normal pressure at the interlayer boundary. In the final part of the study, future directions for improving the approaches of simulation the laminated composites rolling processes are proposed.
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层合复合材料AMg3/D16/AMg3轧制过程模拟
介绍。在过去的几十年中,基于铝合金的层压复合材料在航空航天和汽车工业中得到了越来越多的应用。层压复合材料通常是通过累积轧制结合生产的,这导致了初始制备的板材的冶金结合。因此,累积辊粘合的主要任务是在材料之间获得可靠的粘合。然而,目前,通过塑性变形连接相似或不同材料的过程仍然是一个知之甚少的现象。在这方面,近年来,材料连接过程的有限元建模方法开始得到大力发展。本工作的目的是建立应力-应变状态参数与不同成分铝合金之间形成稳定结合之间的关系。为实现这一目标,制定了以下任务:利用俄罗斯科学院乌拉尔分院工程科学研究所的物理实验数据,对层压复合材料“AMg3/D16/AMg3”轧制过程进行了模拟;2. 层压复合材料“AMg3/D16/AMg3”轧制过程中最重要应力-应变状态参数的选择与分析研究方法。选择过程仿真系统Deform-3D作为主要研究工具。结果和讨论。通过对各层物料流动坐标网格畸变和速度矢量的分析,发现轧制后物料在截面上的变形分布不均匀,外层物料的流动强度大于中间层。当最大折减比为75%时,截面应变强度ei的最大散射值为12%。这就允许人们在第一次近似中接受变形均匀性假设的解析计算。建立了复合材料层间键合的开始与接触面的阈值膨胀和层间边界的法向压力之间的关系。最后,对层合复合材料轧制过程模拟方法的改进方向进行了展望。
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来源期刊
Obrabotka Metallov-Metal Working and Material Science
Obrabotka Metallov-Metal Working and Material Science METALLURGY & METALLURGICAL ENGINEERING-
CiteScore
1.10
自引率
50.00%
发文量
26
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