Ultrasonic vibration-assisted tube extrusion shear expansion (UVaTESE): A novel process to manipulate the texture of AZ31 magnesium alloy

IF 6.7 2区 材料科学 Q1 ENGINEERING, INDUSTRIAL Journal of Materials Processing Technology Pub Date : 2024-10-12 DOI:10.1016/j.jmatprotec.2024.118634
Jianxing Zhao , Chaowei Zeng , Ting Yuan , Wenyu Du , Yujiang Liu , Yan Wang , Hongjun Hu , Zhuoran Zeng
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Abstract

AZ31 magnesium (Mg) alloy prepared via the extrusion process forms an immensely strong {0001} basal texture, therefore there is a necessity to improve the existing extrusion process to achieve a weakening of the {0001} basal texture of the AZ31 Mg alloy. In this study, a novel process called UVaTESE is proposed. The Mg alloy texture and slip system activation at four ultrasonic vibration (UV) frequencies have been simulated via ABAQUS-VUMAT and VPSC, individually. The simulation results indicate that UV is capable of diffusing the {0001} basal texture of the Mg alloy along the extrusion direction (ED) and transverse direction (TD) and significantly improves the activation of pyramidal slip <c+a>. The simulations are verified experimentally, and the {0001} basal texture of AZ31 Mg alloy has the identical tendency to disperse along ED and TD. Prismatic slip <a> and pyramidal slip <c+a> jointly lead to diffusion of the grain basal texture along the TD, while grains with basal texture diffused along the ED are controlled by both basal slip <a> and pyramidal slip <c+a>. UV has a positive effect on the grain refinement as well as on the homogeneity of AZ31 Mg alloy. The proportion of dynamic recrystallization (DRX) of AZ31 Mg alloy is proportional to the frequency of UV, and it is noteworthy that the mechanism of DRX behavior is not affected by UV. This novel process provides a fundamentally innovative approach to the preparation of Mg alloys and magnesium-aluminum (Mg-Al) composite tubes via extrusion.
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超声波振动辅助管挤压剪切膨胀(UVaTESE):操纵 AZ31 镁合金质地的新工艺
通过挤压工艺制备的 AZ31 镁(Mg)合金会形成非常坚固的 {0001} 基底纹理,因此有必要改进现有的挤压工艺,以减弱 AZ31 镁合金的 {0001} 基底纹理。本研究提出了一种名为 UVaTESE 的新工艺。通过 ABAQUS-VUMAT 和 VPSC 分别模拟了四种超声波振动(UV)频率下的镁合金纹理和滑移系统激活。模拟结果表明,超声波能够沿挤压方向(ED)和横向方向(TD)扩散镁合金的{0001}基底纹理,并显著改善金字塔滑移的激活<c+a>。实验验证了模拟结果,AZ31 镁合金的{0001}基底纹理沿 ED 和 TD 方向具有相同的分散趋势。棱柱滑移<a>和金字塔滑移<c+a>共同导致晶粒基底纹理沿 TD 扩散,而基底纹理沿 ED 扩散的晶粒则同时受基底滑移<a>和金字塔滑移<c+a>的控制。紫外线对 AZ31 镁合金的晶粒细化和均匀性有积极影响。AZ31 Mg 合金的动态再结晶(DRX)比例与紫外线频率成正比,值得注意的是,DRX 行为的机理不受紫外线的影响。这种新型工艺为通过挤压法制备镁合金和镁铝(Mg-Al)复合管提供了一种根本性的创新方法。
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来源期刊
Journal of Materials Processing Technology
Journal of Materials Processing Technology 工程技术-材料科学:综合
CiteScore
12.60
自引率
4.80%
发文量
403
审稿时长
29 days
期刊介绍: The Journal of Materials Processing Technology covers the processing techniques used in manufacturing components from metals and other materials. The journal aims to publish full research papers of original, significant and rigorous work and so to contribute to increased production efficiency and improved component performance. Areas of interest to the journal include: • Casting, forming and machining • Additive processing and joining technologies • The evolution of material properties under the specific conditions met in manufacturing processes • Surface engineering when it relates specifically to a manufacturing process • Design and behavior of equipment and tools.
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