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ANALISIS STRUKTUR MIKRO DAN KEKERASAN HASIL PENGELASAN SHIELDED METAL ARC WELDING (SMAW) DENGAN VARIASI KECEPATAN POLISHING TERHADAP LOGAM STAINLESS STEEL 304

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Penilaian

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This study aims to determine the effect of polishing speed and time on the microstructure and hardness of AISI 304 type stainless steel material that has gone through the Shielded Metal Arc Welding (SMAW) method welding process. The main focus of this research is to evaluate how polishing parameters affect surface quality, microstructure appearzmce, and hardness values in the fusion zone, fusion line, and base metal areas. The polishing speeds used were 570 rpm, 750 rpm, and 1043 rpm with polishing times of 5 minutes, l0 minutes, and 15 minutes. Microstructural observations were performed using optical metallography, while hardness testing was performed using the Vickers method. The results of the observations showed that the microstructure consisted of austenite and ferrite phases, with increased grain boundary sharpness as the polishing time increased.'The best results were obtained at a speed of 750 rpm for l5 minutes. The hardness testing showed that the highest hardness value in the fusion zone, 198.35 VHN, was obtained at a speed of 1043 rpm for 15 minutes. Meanwhile, the highest hardness in the fusion line region, 201.15 YI{N, occurred at a speed of 1043 rpm for 15 minutes. The fusion line generally exhibits higher hardness than the base metal, attributed to phase transformation caused by the thermal effects of welding. This study concludes that polishing speed and time significantly influence the microstructure appearance and surface hardness results. Keywords: SMAW Welding, AISI 304 Stainless Steel, Polishing, Microstructure, Vickers Hardnes

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Availability

Inventory Code	Barcode	Call Number	Location	Status
2507005528	T183159	T1831592025	Central Library (Reference)	Available but not for loan - Not for Loan

Detail Information

Series Title

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Call Number

T1831592025

Publisher

Indralaya : Prodi Teknik Mesin, Fakultas Teknik Universitas Sriwijaya., 2025

Collation

xxviii, 80 hlm.; ilus,; tab, 29 cm

Language

Indonesia

ISBN/ISSN

-

Classification

620.107

Content Type

Text

Media Type

unmediated

Carrier Type

other (computer)

Edition

-

Subject(s)

Prodi Teknik Mesin
Properti dan kekuatan material teknik

Specific Detail Info

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Statement of Responsibility

SEPTA

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