Friction stir spot welding of AA5052 with additional carbon fiber-reinforced polymer composite interlayer

Nanotechnology Reviews

article

Omer Kalaf¹  Tauqir Nasir¹  Mohammed Asmael¹  Babak Safaei¹  Qasim Zeeshan¹  Amir Motallebzadeh²  Ghulam Hussain³ 

[1] Department of Mechanical Engineering, Eastern Mediterranean University;Koç University Surface Science and Technology Center (KUYTAM);Faculty of Mechanical Engineering, GIK Institute of Engineering Sciences and Technology

关键词: friction stir spot welding;    interlayer;    carbon fiber-reinforced polymer composite;    aluminum alloys;    mechanical properties;    microstructure;   

DOI  :  10.1515/ntrev-2021-0017

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

In this study, similar aluminum alloys AA5052 with additional carbon fiber-reinforced polymer composite (CFRP) interlayer were selected to investigate the effect of welding parameters (rotational speed and dwell time) on the mechanical properties, joint efficiency, and microstructure of friction stir spot weld joint. The maximum tensile shear load was 1779.6 N with joint efficiency of 14.6% obtained at rotational speed of 2,000 rpm and 2 s dwell time, which is 39.5% higher than the value at low rotational speed 850 rpm and 2 s dwell time. Meanwhile, the maximum microhardness 58 HV was attained in the keyhole region at rotational speed of 2,000 rpm and dwell time of 5 s, which is 22.4% higher compared to low rotational speed. The SEM-EDS results reveal the presence of intermetallic compounds (Al–Mg–C), which enhance the intermetallic bonding between elements.

【 授权许可】

CC BY