俞伟元,吴炜杰,孙学敏.超声辅助电阻钎焊6063铝合金接头显微组织的演变[J].稀有金属材料与工程,2019,48(12):4081.[Yu Weiyuan,Wu Weijie,Sun Xuemin.Microstructure evolution of ultrasonic-assisted electrical resistance brazing joints of 6063 aluminum alloys[J].Rare Metal Materials and Engineering,2019,48(12):4081.]
超声辅助电阻钎焊6063铝合金接头显微组织的演变
投稿时间:2018-10-04  修订日期:2018-11-01
中文关键词:  6063铝合金  超声辅助电阻钎焊  超声功率  电场强度
基金项目:国家自然科学基金资助(项目号51465032)
中文摘要:
      近年来,由于超声波独特的理化效应,在焊接过程中被广泛采用,在电阻钎焊过程中施加超声波能获得优质接头,但对于其机理还鲜有研究。本研究采用超声辅助电阻钎焊方法实现Zn-2Al钎料与6063铝合金的连接,研究了声场及电场对接头微观组织演变的影响。结果表明,钎焊过程中施加超声振动能够有效促进钎料与母材形成有效连接,减少缺陷从而形成良好冶金性结合的钎焊接头,且钎缝层微观组织更加均匀细小。另外,超声功率和电流强度均对钎焊过程的溶蚀有显著影响,随着超声功率,母材的溶蚀加剧,钎缝中Al含量增加,共析α-Al相增多;而随着电流的增大,初晶α-Al相增多。
Microstructure evolution of ultrasonic-assisted electrical resistance brazing joints of 6063 aluminum alloys
英文关键词:6063 aluminim alloy  ultrasonic-assisted electrical resistance brazing  ultrasonic power  current intensity
英文摘要:
      In recent years, due to the unique physical and chemical effects of ultrasonic waves, it has been widely used in the welding process. High-quality joints were obtained with the ultrasonic vibration was applied during the resistance brazing process. To date, however, little studies have been reported on the microstructure evolution mechanism of joints. In the present study, a Zn-Al alloy was used as filler metal to braze 6063 aluminum alloy using ultrasonic-assisted electrical resistance-brazing technology. The effects of ultrasonic field and electric field on the microstructure evolution of the joints were studied, and its mechanism was also analyzed. The results showed that applying ultrasonic vibration to substrate during brazing process could effectively promote the effective connection between the filler metal and base metal, reduce the defects, improved homogeneity and have obtained the joints with good metallurgical bonding. In addition, both ultrasonic power and electrical current intensity have significant effect on the dissolution during the brazing process. With the increment of ultrasonic power, the dissolution of the base metal was intensified, the Al content in the brazing seam increased, and the eutectoid α-Al phase increased. As the electrical current increases, the primary α-Al phase increases.
作者单位E-mail
俞伟元 兰州理工大学 甘肃省有色金属先进加工与再利用国家重点实验室 weiyuanyu2018@163.com 
吴炜杰 兰州理工大学 甘肃省有色金属先进加工与再利用国家重点实验室  
孙学敏 兰州理工大学 甘肃省有色金属先进加工与再利用国家重点实验室  
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