Transactions of Materials and Heat Treatment

Title：Finite element analysis on microstructure in portholes-equal channel angular pressing spread extrusion for aluminium alloy

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ClassificationCode：TG376.2

year,vol(issue):pagenumber：2025,50(8):131-138

Abstract：

In order to understand the microstructure evolution law of portholes-equal channel angular pressing spread extrusion aluminum alloy, for 6005A aluminum alloy, based on the mathematical model of recrystallization equation YADA, the micro deformation characteristics were studied by combining finite element analysis and experimental research. The accuracy of the model was verified by metallographic analysis, and the recrystallization volume fraction, recrystallized grain size and final grain size during the extrusion process were obtained.The research results reveal the grain refinement phenomenon of 6005A aluminum alloy during the hot extrusion process and determine the evolution law of characteristic points. Finally, the sheet with the recrystallization volume fraction of 100% and the grain size of 15.75-19.92 μm are extruded sucessfully, which lays the foundation for the microstructural prediction of portholes-equal channel congular pressing spread extrusion.

Funds：

河南省科技攻关项目（242102230066，242102231017，242102230047）

作者简介：石磊（1980-），男，博士，副教授 E-mail：shilei207207@163.com 通信作者：卢志文（1966-），男，博士，教授 E-mail：1796879656@qq.com

Reference：

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