Short-Pulse Resistance Spot Welding of Aluminum Alloy 6016-T4 - Part 1

IF 2.2 3区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING
E. Schulz, Matthias Wagner, H. Schubert, Wenqi Zhang, B. Balasubramanian, L. Brewer
{"title":"Short-Pulse Resistance Spot Welding of Aluminum Alloy 6016-T4 - Part 1","authors":"E. Schulz, Matthias Wagner, H. Schubert, Wenqi Zhang, B. Balasubramanian, L. Brewer","doi":"10.29391/2021.100.004","DOIUrl":null,"url":null,"abstract":"Short-pulse welding parameters for resistance spot welding (RSW) of aluminum alloy AA6016-T4 using mediumfrequency direct current (MFDC) systems were developed to reduce the heat input required for nugget formation. Optimization of current and time parameters is critical during RSW of aluminum alloys for reducing energy requirements and avoiding weld imperfections, such as solidification cracking and expulsion, while maintaining weld quality, particularly given the high electrical and thermal conductivities of the materials. The welding time and the applied current level of the current pulse were varied systematically for thin sheets (1 mm or 0.04 in.) of AA6016-T4. The quality of the welds was evaluated by pull-out testing, ultrasound testing, and metallography techniques. Simulations of the same welding processes were performed with the finite element-based SORPAS® software. The results showed short-pulse MFDC RSW can reduce the energy required for sound welds in this alloy without requiring an increase in welding current. The simulations and experiments also showed the welding process had distinct weld nugget nucleation and growth phases.","PeriodicalId":23681,"journal":{"name":"Welding Journal","volume":"100 1","pages":"41-51"},"PeriodicalIF":2.2000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Welding Journal","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.29391/2021.100.004","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 7

Abstract

Short-pulse welding parameters for resistance spot welding (RSW) of aluminum alloy AA6016-T4 using mediumfrequency direct current (MFDC) systems were developed to reduce the heat input required for nugget formation. Optimization of current and time parameters is critical during RSW of aluminum alloys for reducing energy requirements and avoiding weld imperfections, such as solidification cracking and expulsion, while maintaining weld quality, particularly given the high electrical and thermal conductivities of the materials. The welding time and the applied current level of the current pulse were varied systematically for thin sheets (1 mm or 0.04 in.) of AA6016-T4. The quality of the welds was evaluated by pull-out testing, ultrasound testing, and metallography techniques. Simulations of the same welding processes were performed with the finite element-based SORPAS® software. The results showed short-pulse MFDC RSW can reduce the energy required for sound welds in this alloy without requiring an increase in welding current. The simulations and experiments also showed the welding process had distinct weld nugget nucleation and growth phases.
6016-T4铝合金短脉冲电阻点焊。第1部分
研究了采用中频直流(MFDC)系统进行AA6016-T4铝合金电阻点焊(RSW)的短脉冲焊接参数,以减少形成熔核所需的热输入。在铝合金的RSW过程中,优化电流和时间参数对于降低能量需求和避免焊接缺陷(如凝固开裂和排出)至关重要,同时保持焊接质量,特别是考虑到材料的高导电性和导热性。对于AA6016-T4薄板(1 mm或0.04 in.),焊接时间和施加电流脉冲的电流水平有系统地变化。通过拉拔试验、超声试验和金相技术对焊缝质量进行了评价。利用SORPAS®有限元软件对相同的焊接过程进行了模拟。结果表明,在不增加焊接电流的情况下,短脉冲MFDC RSW可以降低焊接所需的能量。模拟和实验还表明,焊接过程中存在明显的焊缝核形核和长大阶段。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Welding Journal
Welding Journal 工程技术-冶金工程
CiteScore
3.00
自引率
0.00%
发文量
23
审稿时长
3 months
期刊介绍: The Welding Journal has been published continually since 1922 — an unmatched link to all issues and advancements concerning metal fabrication and construction. Each month the Welding Journal delivers news of the welding and metal fabricating industry. Stay informed on the latest products, trends, technology and events via in-depth articles, full-color photos and illustrations, and timely, cost-saving advice. Also featured are articles and supplements on related activities, such as testing and inspection, maintenance and repair, design, training, personal safety, and brazing and soldering.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信