PSI - Issue 33

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Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000 ScienceDirect

www.elsevier.com/locate/procedia

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Procedia Structural Integrity 33 (2021) 171–180

IGF26 - 26th International Conference on Fracture and Structural Integrity A review porosity in aluminum welding Rizki Dwi Ardika, Teguh Triyono, Nurul Muhayat, Triyono* Department of Mechanical Engineering, Sebelas Maret University, Surakarta 57126, Central Java, Indonesia IGF26 - 26th International Conference on Fracture and Structural Integrity A review porosity in aluminum welding Rizki Dwi Ardika, Teguh Triyono, Nurul Muhayat, Triyono* Department of Mechanical Engineering, Sebelas Maret University, Surakarta 57126, Central Java, Indonesia

© 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the IGF ExCo © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo bstract Aluminum is a material that is often used in the transportation industry because it has a low density, high strength, and good corrosion resistance. The transport structure requires connection to achieve a form as designed. The joint process usually uses a welding process because welding has good metallurgical properties, superior mechanical properties, and low cost. Aluminum welding generally has disadvantages. One of these weaknesses is the formation of porosity, which will affect the welded joint's mechanical properties, so the discussion of porosity in aluminum welded joints is critical. This paper attempts to provide an overview of the for ation mechanisms and types of porosity defects in aluminum alloys' welding method. A brief description of the effect of the environment on porosity defects, the causes of porosity formation, the impact of porosity, and how to reduce porosity in aluminum welding will be discussed. In conclusion, the formation of porosity in the welding process is due to dissolved hydrogen in the weld metal, air/bubbles from the welding process, filler/filler wire, and the environment welding influence. The impact of porosity can cause cracks in welded joints, decreased ductility, and failure of fatigue. This study's results can be used as a basis for analyzing the relationship between the welding environmental parameters and the welding defect porosity. © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo Abstract Aluminum is a material that is often used in the transportation industry because it has a low density, high strength, and good corrosion resistance. The transport structure requires connection to achieve a form as designed. The joint process usually uses a welding process because welding has good metallurgical properties, superior mechanical properties, and low cost. Aluminum welding generally has disadvantages. One of these weaknesses is the formation of porosity, which will affect the welded joint's mechanical properties, so the discussion of porosity in aluminum welded joints is critical. This paper attempts to provide an overview of the formation mechanisms and types of porosity defects in aluminum alloys' welding method. A brief description of the effect of the environment on porosity defects, the causes of porosity formation, the impact of porosity, and how to reduce porosity in aluminum welding will be discussed. In conclusion, the formation of porosity in the welding process is due to dissolved hydrogen in the weld metal, air/bubbles from the welding process, filler/filler wire, and the environment welding influence. The impact of porosity can cause cracks in welded joints, decreased ductility, and failure of fatigue. This study's results can be used as a basis for analyzing the relationship between the welding environmental parameters and the welding defect porosity.

Keywords: Welding, porosity, environment influence on porosity, aluminum alloy, mechanical properties

* Corresponding author. Tel.: +62-122-628-486; fax: +62-122-628-486 E-mail address: triyono74@staff.uns.ac.id

2452-3216 © 2021 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo 2452-3216 © 2021 The Authors. Publish d by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review Statement: Peer-review under responsibility of the scientific committee of the IGF ExCo * Corresponding author. Tel.: +62-122-628-486; fax: +62-122-628-486 E-mail address: triyono74@staff.uns.ac.id

2452-3216 © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the IGF ExCo 10.1016/j.prostr.2021.10.021

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