| 铝合金型材的静轴肩倾斜搅拌摩擦焊接头性能 |
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| 引用本文： | 方远方,张华. 铝合金型材的静轴肩倾斜搅拌摩擦焊接头性能[J]. 中国机械工程, 2021, 32(7): 815-820. DOI: 10.3969/j.issn.1004-132X.2021.07.008 |
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| 作者姓名： | 方远方 张华 |
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| 作者单位： | 1.北京石油化工学院光机电装备技术北京市重点实验室，北京，1026172.北京市安全生产工程技术研究院，北京，102617 |
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| 基金项目： | 国家自然科学基金（51774047）；北京市长城学者培养计划（CIT&TCD20170309） |
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| 摘 要： | 采用静止轴肩搅拌摩擦焊装置对6005A铝合金型材进行焊接,并对焊后接头进行拉伸与弯曲的检测,观测了焊缝与拉伸断口横截面组织,结果表明:静轴肩焊缝表面平整无弧纹;倾斜焊接可避免焊缝表面沟槽;焊接速率1 m/min、转速2100 r/min时,接头的抗拉强度达到母材的73％,屈服强度达到母材的55％;转速1700 r/mi...
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| 关 键 词： | 搅拌摩擦焊 静轴肩 铝合金型材 断裂机制 |
Welding Joint Performance of Inclined Stationary Shoulder Friction Stir Welding for Aluminum Alloy Sections |
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| FANG Yuanfang,ZHANG Hua. Welding Joint Performance of Inclined Stationary Shoulder Friction Stir Welding for Aluminum Alloy Sections[J]. China Mechanical Engineering, 2021, 32(7): 815-820. DOI: 10.3969/j.issn.1004-132X.2021.07.008 |
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| Authors: | FANG Yuanfang ZHANG Hua |
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| Affiliation: | 1.Beijing Key Laboratory of Opto-mechatronic Equipment Technology,Beijing Institute of Petrochemical Technology,Beijing，1026172.Beijing Academy of Safety Engineering and Technology,Beijing，102617 |
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| Abstract: | 6005A commercial aluminum alloy was welded by a FSW device with stationary shoulder. After welding, stretching and bending characteristics of joints were tested, and the cross sectional structures of welds and tensile fracture cross-sections were observed. The results show that surfaces of stationary shoulder FSW are smooth without arc grain; grooves of weld surfaces are disappeared by inclined stationary shoulder FSW. When weld speed is as 1 m/min and rotational speed is as 2100 r/min, the tensile strength of joints is as 73% that of parent metal, and yield strength of joints is as 55% that of parent metal. At the rotational speed of 1700 r/min and 1800r/min, cracks appear in back bending specimen, and the cracks disappear with the increase of rotational speed. S curves appear in cross sections of welds, and the fracture mechanism of the specimen is ductile fracture. With the increase of rotating speed, the degree of tissue refinement and degree of distribution both increase. |
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| Keywords: | friction stir welding(FSW) stationary shoulder aluminum alloy section fracture mechanism |
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