利用灰色关系分析法对 AZ80A - AZ31B 镁合金 FSW 过程中的参数进行多目标优化

IF 1.5 4区 工程技术 Q3 ENGINEERING, MECHANICAL
J. Gunasekaran, P. Sevvel, I. John Solomon, J. Vasanthe Roy
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引用次数: 0

摘要

我们试图优化 AZ80A - AZ31B 镁合金搅拌摩擦焊接过程中的工艺参数,以提高焊接接头的机械性能。我们采用了基于响应面法的灰色关系分析,使用了三个因素和三个不同的层次。利用灰色关系分析技术制定了基于中心复合设计的多目标数值模型,以优化与工具相关的参数,即工具的旋转速度、移动速度和销钉的几何形状。灰色关系等级适用于所有响应:拉伸强度和伸长率。采用方差分析获得灰色关系等级,以确定 FSW 过程中影响最大的参数。结果表明,工具销钉的几何形状对确定制造的镁合金接头的质量影响更大,具有锥形圆柱销钉几何形状的工具显示出更大的灰色关系等级值。根据获得的灰度等级值,优化的工艺参数设置为:转速 1100 转/分钟,移动速度 1.5 毫米/秒,刀具为锥形圆柱销几何形状。在使用优化参数组合期间进行的确认调查运行验证了预期值,结果显示与调查运行值完全一致,确认接头的抗拉强度为 260.42 兆帕,伸长率为 6.53%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Multi objective optimization of parameters during FSW of AZ80A - AZ31B Mg alloys using grey relational analysis

We attempted to optimize the process-based parameters during friction stir welding of AZ80A - AZ31B Mg alloys with the objective of enhancing the mechanical properties of the fabricated joints. A response surface method based grey relational analysis was employed using three factors and three distinctive levels. A central composite design based multi-objective numerical model using the technique of grey relational analysis was formulated for optimizing the tool dependent parameters, namely tool’s rotational speed, its speed of traverse and geometry of the pin. Grey relational grade was determined for all the responses: tensile strength and elongation percentage. Analysis of variance was employed for attaining grey relational grade to determine the most influential parameter of the FSW process. It was observed that the geometry of the tool pin had a greater impact in ascertaining the quality of the fabricated Mg alloy joints, and the tool possessing tapered cylindrical pin geometry exhibited larger values of grey relational grade. Optimized process parameter settings based on the attained GRG values were recorded to be 1100 rpm rotational speed, speed of traverse of 1.5 mm/sec and a tool with taper cylindrical pin geometry. The anticipated values were validated through confirmation investigational runs performed during employment of optimized parameter combinations, which exhibited a perfect agreement with the investigational run values and the confirmatory joint exhibited a tensile strength of 260.42 MPa and elongation percentage of 6.53.

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来源期刊
Journal of Mechanical Science and Technology
Journal of Mechanical Science and Technology 工程技术-工程:机械
CiteScore
2.90
自引率
6.20%
发文量
517
审稿时长
7.7 months
期刊介绍: The aim of the Journal of Mechanical Science and Technology is to provide an international forum for the publication and dissemination of original work that contributes to the understanding of the main and related disciplines of mechanical engineering, either empirical or theoretical. The Journal covers the whole spectrum of mechanical engineering, which includes, but is not limited to, Materials and Design Engineering, Production Engineering and Fusion Technology, Dynamics, Vibration and Control, Thermal Engineering and Fluids Engineering. Manuscripts may fall into several categories including full articles, solicited reviews or commentary, and unsolicited reviews or commentary related to the core of mechanical engineering.
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