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首页> 外文期刊>Journal of Materials Engineering and Performance >Multiphysics Modeling and Simulations of Mil A46100 Armor-Grade Martensitic Steel Gas Metal Arc Welding Process
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Multiphysics Modeling and Simulations of Mil A46100 Armor-Grade Martensitic Steel Gas Metal Arc Welding Process

机译：Mil A46100装甲级马氏体钢气金属电弧焊工艺的多物理场建模与仿真

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摘要

A multiphysics computational model has been developed for the conventional Gas Metal Arc Welding (GMAW) joining process and used to analyze butt-welding of MIL A46100, a prototypical high-hardness armor martensitic steel. The model consists of five distinct modules, each covering a specific aspect of the GMAW process, i.e., (a) dynamics of welding-gun behavior; (b) heat transfer from the electric arc and mass transfer from the electrode to the weld; (c) development of thermal and mechanical fields during the GMAW process; (d) the associated evolution and spatial distribution of the material microstructure throughout the weld region; and (e) the final spatial distribution of the as-welded material properties. To make the newly developed GMAW process model applicable to MIL A46100, the basic physical-metallurgy concepts and principles for this material have to be investigated and properly accounted for/modeled. The newly developed GMAW process model enables establishment of the relationship between the GMAW process parameters (e.g., open circuit voltage, welding current, electrode diameter, electrode-tip/weld distance, filler-metal feed speed, and gun travel speed), workpiece material chemistry, and the spatial distribution of as-welded material microstructure and properties. The predictions of the present GMAW model pertaining to the spatial distribution of the material microstructure and properties within the MIL A46100 weld region are found to be consistent with general expectations and prior observations.
机译：已为常规的气体金属电弧焊（GMAW）焊接工艺开发了多物理场计算模型，该模型用于分析MIL A46100（一种典型的高硬度铠装马氏体钢）的对接焊。该模型由五个不同的模块组成，每个模块涵盖GMAW过程的特定方面，即（a）焊枪行为的动态; （b）电弧的热传递和电极到焊缝的质量传递; （c）在GMAW流程中开发热和机械领域; （d）整个焊接区域中材料微观结构的相关演变和空间分布; （e）焊接材料特性的最终空间分布。为了使新开发的GMAW工艺模型适用于MIL A46100，必须研究该材料的基本物理冶金概念和原理，并对其进行适当说明/建模。新开发的GMAW工艺模型可以建立GMAW工艺参数（例如，开路电压，焊接电流，电极直径，电极尖端/焊接距离，填充金属进给速度和喷枪行进速度），工件材料之间的关系化学，以及焊接材料的微观结构和性能的空间分布。发现当前的GMAW模型关于MIL A46100焊接区域内材料微观结构和性能的空间分布的预测与一般预期和先前的观察结果一致。

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