Cryogenic springback of 2219-W aluminum alloy sheet through V-shaped bending

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China Pub Date : 2024-10-01 DOI:10.1016/S1003-6326(24)66601-X

Xiao-bo FAN , Qi-liang WANG , Fang-xing WU , Xu-gang WANG

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Abstract

A V-shaped bending device was established to evaluate the effects of temperature and bending fillet radius on springback behavior of 2219-W aluminum alloy at cryogenic temperatures. The cryogenic springback mechanism was elucidated through mechanical analyses and numerical simulations. The results indicated that the springback angle at cryogenic temperatures was greater than that at room temperature. The springback angle increased further as the temperature returned to ambient conditions, attributed to the combined effects of the “dual enhancement effect” and thermal expansion. Notably, a critical fillet radius made the springback angle zero for 90° V-shaped bending. The critical fillet radius at cryogenic temperatures was smaller than that at room temperature, owing to the influence of temperature variations on the bending moment ratio between the forward bending section at the fillet and the reverse bending section of the straight arm.

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通过 V 形弯曲实现 2219-W 铝合金板材的低温回弹

建立了一个 V 形弯曲装置，以评估温度和弯曲圆角半径对 2219-W 铝合金在低温下的回弹行为的影响。通过力学分析和数值模拟阐明了低温回弹机理。结果表明，低温下的回弹角大于室温下的回弹角。当温度恢复到环境温度时，回弹角进一步增大，这是由于 "双重增强效应 "和热膨胀的共同作用。值得注意的是，临界圆角半径使得 90° V 形弯曲时的回弹角为零。低温下的临界圆角半径小于室温下的临界圆角半径，这是由于温度变化对圆角处的正向弯曲部分和直臂反向弯曲部分之间的弯矩比产生了影响。

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

Transactions of Nonferrous Metals Society of China 工程技术-冶金工程

CiteScore

7.40

自引率

17.80%

发文量

8456

审稿时长

3.6 months

期刊介绍： The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.