Modeling and optimization of process parameters for friction stir welding of dissimilar aerospace alloys AA2014 and AA7075

IF 0.7 Q3 ENGINEERING, MULTIDISCIPLINARY Engineering Review Pub Date : 2022-01-01 DOI:10.30765/er.1778

R. Kumar, V. Upadhyay, C. Sharma

引用次数: 3

Abstract

Aluminum alloys possess a high strength-to-weight ratio and good corrosion resistance making them suitable for various structural parts and components used in the aerospace industry. However, the principal barrier restricting their use is their weldability. This experimental study addresses the issues in joining of dissimilar aerospace aluminum alloys. In this work, friction stir welding (FSW) of dissimilar high strength alloys AA2014 and AA7075 has been carried out and the effect of welding parameters has been studied to obtain defect-free high strength welds. Detailed statistical analysis was performed and suitable regression models were developed for prediction and optimization. Multi-objective optimization has been carried out by employing the desirability function to determine the optimal condition for defect-free welds with adequate mechanical properties. Microstructure and fracture surface of the optimum weld was also studied and compared with the lowest and highest heat input welded joints.

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异种航空合金AA2014和AA7075搅拌摩擦焊接工艺参数建模与优化

铝合金具有高的强度重量比和良好的耐腐蚀性，适用于航空航天工业中使用的各种结构零件和部件。然而，限制其使用的主要障碍是其可焊性。本实验研究解决了异种航空铝合金的连接问题。本文对不同高强合金AA2014和AA7075进行了搅拌摩擦焊接，研究了焊接参数对无缺陷高强焊缝的影响。进行了详细的统计分析，并建立了合适的回归模型进行预测和优化。采用期望函数进行多目标优化，以确定具有足够力学性能的无缺陷焊缝的最优条件。研究了最佳焊缝的显微组织和断口形貌，并与最低和最高热输入焊接接头进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Engineering Review ENGINEERING, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

0.00%

发文量

期刊介绍： Engineering Review is an international journal designed to foster the exchange of ideas and transfer of knowledge between scientists and engineers involved in various engineering sciences that deal with investigations related to design, materials, technology, maintenance and manufacturing processes. It is not limited to the specific details of science and engineering but is instead devoted to a very wide range of subfields in the engineering sciences. It provides an appropriate resort for publishing the papers covering prior applications – based on the research topics comprising the entire engineering spectrum. Topics of particular interest thus include: mechanical engineering, naval architecture and marine engineering, fundamental engineering sciences, electrical engineering, computer sciences and civil engineering. Manuscripts addressing other issues may also be considered if they relate to engineering oriented subjects. The contributions, which may be analytical, numerical or experimental, should be of significance to the progress of mentioned topics. Papers that are merely illustrations of established principles or procedures generally will not be accepted. Occasionally, the magazine is ready to publish high-quality-selected papers from the conference after being renovated, expanded and written in accordance with the rules of the magazine. The high standard of excellence for any of published papers will be ensured by peer-review procedure. The journal takes into consideration only original scientific papers.