التفاصيل البيبلوغرافية
| العنوان: |
2024-T42铝合金点焊接头性能研究. (Chinese) |
| Alternate Title: |
Research on performance of 2024-T42 aluminum alloy spot welded joints[JP]. (English) |
| المؤلفون: |
王会霞, 董松浩, 王军, 张亮, 吴大勇 |
| المصدر: |
Journal of Hebei University of Science & Technology; Feb2022, Vol. 43 Issue 1, p70-79, 10p |
| مصطلحات موضوعية: |
SPOT welding, FRICTION stir welding, WELDING equipment, DUCTILE fractures, MICROHARDNESS testing, ALUMINUM alloys |
| Abstract (English): |
In order to improve the connection performance and welding quality of high-strength aluminum alloy joints,the performance of three different connection joints,namely 2024-T42 aluminum alloy refilled friction stirring spot welding (RFSSW),resistance spot welding and riveting,was characterized and analyzed by microstructure observation tests,tensile tests,tensile shear tests and microhardness tests.The results show that the mechanical properties of the RFSSW joint are the best,and the tensile shear property is 7.23 kN,which is 115.82% higher than riveting property and 37.45% higher than resistance spot welded joint;the pull-off mechanical property is 3.09 kN,which is 3.69% higher than riveting and 137.69% higher than resistance spot welded joint;the microhardness of RFSSW joint is the highest,which is close to the base metal,while the microhardness of resistance spot welded joint is the lowest,which is only 50% of the base metal.The fracture morphology of RFSSW and resistance spot weld joints are ductile fracture and mixed fracture,respectively.Using RFSSW method can improve the joint performance of aluminum alloy spot welding,which provides a theoretical and technical basis for the application of aluminum alloy structural spot welding. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
为改善高强铝合金接头连接性能，提高焊接质量，研究了2024-T42铝合金回填式搅拌摩擦点焊（RFSSW）、电阻点焊和铆接3种不同接头的连接性能，采用显微组织观察试验、拉伸试验、拉剪试验和显微硬度试验等方法，对接头组织和性能进行表征与分析。结果表明：RFSSW接头的力学性能最优，拉剪性能达到7.23 kN，较铆接和电阻点焊分别提高了115.82%和37.45%；RFSSW接头的拉脱性能达到3.09 kN，较铆接和电阻点焊分别提高了3.69%和137.69%；RFSSW接头显微硬度最高，接近母材，而电阻点焊接头的显微硬度最低，仅为母材的50%；RFSSW与电阻点焊接头断裂方式分别属于韧性断裂和混合型断裂。采用RFSSW方法可以改善铝合金电焊的接头性能，为高强铝合金结构件焊接与连接工艺的应用提供理论和技术参考。 [ABSTRACT FROM AUTHOR] |
|
Copyright of Journal of Hebei University of Science & Technology is the property of Hebei University of Science & Technology, Journal of Hebei University of Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |