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All Journal Rotasi Jurnal Rekayasa Mesin Manutech : Jurnal Teknologi Manufaktur JURNAL CRANKSHAFT Piston: Journal of Technical Engineering Jurnal Engine: Energi, Manufaktur, dan Material SIGMA TEKNIKA Jurnal Ekologi, Masyarakat dan Sains Sylva: Jurnal Ilmu-ilmu Kehutanan International Journal of Mechanics, Energy Engineering and Applied Science (IJMEAS)
Deni Mulyana
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Journal : Piston: Journal of Technical Engineering

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The Analysis of Current Variations on Mechanical Properties and Microstructure of ASS 316L Welded Joints by TIG Welding Riswanda; Wahyudin, Faris Khoiri; Azmy, Ilham; Mulyana, Deni; Saragih, Albert Daniel
Piston: Journal of Technical Engineering Vol. 8 No. 2 (2025)
Publisher : Program Studi Teknik Mesin Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/pjte.v8i2.48941

Abstract

Stainless steel 316L pipe welding joints are widely used in industry, especially in the Bio-Medical field. In order to develop research on this field, the Gas Tungsten Arc Welding (GTAW) process was carried out on the butt joint of ASS 316L. In this study, the ASS 316L pipe of 89 mm (3.5 inches), a thickness of 2.6 mm, and a length of 100 mm was investigated. The effect of current variations of 30, 40, and 50A with shielding gas and Argon backing gas were analyzed. ER316L have been selected as filler metal for GTAW process. The results of microstructural observations for all currents showed the formation of dendritic and widmanstanten structures in the weld metal and austenitic phases in the base metal. The mechanical tests has been conducted to find out the ultimate tensile strength and and hardness as well as observations of the macro structure in the weld metal (WM), heat affected zone (HAZ), and base metal (BM) areas. Visual observation of the 40A current showed more stable surface and penetration results compared to the 30 and 50A currents. Observations of the macro structure were correlated with the results of visual observations of the 40A current, indicating good fusion and no defects exceeding the standard. The highest tensile strength test results were obtained in specimens with a current of 50A of 659 MPa, followed by a current of 40A of 651 MPa, and a current of 30A of 649.3 MPa. However, the highest elongation was found in specimens with a current of 40A, which was 45.3%, while specimens with currents of 30A and 50A had the same elongation value of 39.3%. The general distribution of hardness in the weld metal area was greater than in the heat affected zone and base metal areas.
Co-Authors Aluyah, Cik Bintoro, Waluyo M. Bintoro, Waluyo Musiono Budi Triyono Hata, Achmad Heptiana, Erta Heri Widiantoro Hore, Duran Ilham Azmy J. Jamari Muhammad Rizal Ardiansyah, Muhammad Rizal Petrus Londa Rifky Ismail Riswanda Saragih, Albert Daniel Sugianto Sugianto Wahyudin, Faris Khoiri Widiatmoko, Rudy Y. Widiatmoko, Rudy Yuni Yahya, Thoriq Zulham Yovita Mercya Zainuddin, Zainuddin