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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:Najib Ahmad Muhammad,Chuansong Wu,Girish Kumar Padhy.Review: Progress and Trends in Ultrasonic Vibration Assisted Friction Stir Welding[J].Journal of Harbin Institute Of Technology(New Series),2018,25(3):16-42.DOI:10.11916/j.issn.1005-9113.17105.
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Review: Progress and Trends in Ultrasonic Vibration Assisted Friction Stir Welding
Author NameAffiliation
Najib Ahmad Muhammad Institute of Materials Joining, Shandong University, Ji’nan 250061, China 
Chuansong Wu Institute of Materials Joining, Shandong University, Ji’nan 250061, China 
Girish Kumar Padhy Institute of Materials Joining, Shandong University, Ji’nan 250061, China 
Abstract:
This paper aims to review the state-of-the-art of ultrasonic vibration assisted friction stir welding (UVAFSW) process. Particular attention has been paid on the modes of ultrasonic exertion, experimental results and effects of ultrasonic vibrations on process effectiveness and joint quality. The trends of various aspects with and without ultrasonic vibrations in FSW process are studied and presented. The influence of ultrasonic vibrations on welding loads, temperature history, weld morphology, material flow, weld microstructure and mechanical properties are revisited. Ultrasonic assisted FSW offers numerous advantages over the conventional FSW process. The superimposing of high-frequency vibrations improves various phenomena of the process and the physical, metallurgical, mechanical and tribological properties of the welded joint. The ultrasonic assisted FSW process has a potential to benefit the industry sector. A checklist listing the materials and process parameters used in the documented studies has been presented for quick reference.
Key words:  friction stir welding  ultrasonic vibration assisted FSW  acoustic softening  welding load  thermal history  material flow  microstructure  mechanical properties
DOI:10.11916/j.issn.1005-9113.17105
Clc Number:TG456.9
Fund:
Descriptions in Chinese:
  

综述:超声振动辅助搅拌摩擦焊接的研究进展与发展动向

Najib Ahmad Muhammad, 武传松, Girish Kumar Padhy

(山东大学 材料连接技术研究所,济南 250061)

创新点说明:

搅拌摩擦焊作为一种新型的固相连接技术,具有焊接质量高、成本低、环境友好等许多优点,已经应用于航空、航天、造船、高速列车等领域。由于这种焊接技术依靠搅拌头与材料的摩擦产热和材料塑性变形时的粘性耗散产热来软化焊接区材料形成连接,因此,焊接时需要很大的转矩、轴向压力和水平进给力。有研究者通过辅加热能来解决这一问题,但也受到了各种因素的局限。而超声振动能量作为机械能,在辅助搅拌摩擦焊接、解决上述问题方面有很大优势。

本文评述了当前超声振动辅助搅拌摩擦焊工艺的研究进展,介绍了国内外近期研发的超声振动施加方式及相应的实施效果。作者课题组直接将超声振动通过工具头施加在搅拌头前方待焊工件上,研发出超声振动强化搅拌摩擦焊UVeFSW新工艺。实验研究发现,UVeFSW能改善焊缝成形、减少缺陷尺寸、降低焊接载荷、提高焊接速度、细化焊核区和热力影响区的晶粒组织。该文分析了各种超声施加方式的优缺点,为超声振动辅助搅拌摩擦焊的进一步研发提供参考。

关键词:搅拌摩擦焊;超声振动辅助搅拌摩擦焊;声致软化效应;焊接载荷;加热历程;材料流;微观结构;机械性能

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