Friction stir alloying of AZ61 and mild steel with Al-CNT additive

Raja, Sufian and Muhamad, Mohd Ridha and Yusof, Farazila and Jamaludin, Mohd Fadzil and Suga, Tetsuo and Liu, Huihong and Morisada, Yoshiaki and Fujii, Hidetoshi (2022) Friction stir alloying of AZ61 and mild steel with Al-CNT additive. Science and Technology of Welding and Joining, 27 (7). pp. 533-540. ISSN 1362-1718, DOI 0.1080/13621718.2022.2080449.

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The friction stir alloying (FSA) procedure successfully produced dissimilar joints between AZ61 magnesium alloy and mild steel with Al-CNT additions. Before welding, Al-CNT additives were placed in a gap between the AZ61 and steel specimens. The experimentation was performed using different welding speeds while tool rotational speed was kept constant for varying weight percentages of carbon nanotubes (CNT) in Al powder. The influence of additives and welding speed on tensile strength and characterisation across the welding interface was studied. Tensile strength of joint with 3% CNT improved up to 222 MPa. Al-rich intermetallic compounds were found at the welding contact, while the formation of Al2MgC2 carbide was detected, which contributed to CNT strengthening effects all to improved welding strength.

Item Type: Article
Funders: Fundamental Research Grant Scheme (Grant No: FRGS/1/2018/TK10/UM/02/2), Ministry of Education, Malaysia
Uncontrolled Keywords: Friction stir alloying; CNT; Dissimilar joint; Magnesium alloy; SPHC steel; Aluminium
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering > Department of Mechanical Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 26 Oct 2023 06:04
Last Modified: 26 Oct 2023 06:04

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