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All Journal Rekayasa Mesin Machine : Jurnal Teknik Mesin Jurnal IMPACT: Implementation and Action Jurnal Pengabdian Perikanan Indonesia Jurnal Karya Pengabdian Teknik Mesin Journal of Energy, Materials, & Manufacturing Technology
Fauzi, Yusuf Rizal
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Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Economics, Econometrics & Finance Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Mechanical Engineering Other

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Journal : Journal of Energy, Materials,

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Pengaruh Perlakuan PWHT terhadap Sifat Mekanis Sambungan Las TIG pada Baja Grade 91 Halman; Ramly, Ismail; Fauzi, Yusuf Rizal
Journal of Energy, Materials, & Manufacturing Technology Vol 4 No 02 (2025): Journal of Energy, Materials, & Manufacturing Technology
Publisher : Unit Penelitian, dan Pengabdian Masyarakat (UPPM) Politeknik ATI Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61844/jemmtec.v4i02.1064

Abstract

Grade 91 steel is a high-alloy steel widely used in power and petrochemical industries due to its resistance to high temperatures, oxidation, and corrosion. However, welding this steel requires post-weld heat treatment (PWHT) to reduce residual stresses and enhance toughness. This study analyzes the effect of varying PWHT holding times (0, 4, 8, and 12 hours) on the mechanical properties of TIG-welded Grade 91 steel using ER90S-B9 filler metal. Tensile and hardness tests were conducted to evaluate changes in strength and material resistance due to heat treatment. The results indicate that without PWHT, the heat-affected zone (HAZ) experiences a significant increase in hardness due to martensitic formation, which the risk of cracking and brittleness. Applying PWHT with a longer holding time effectively reduces hardness in the HAZ and weld zone, improving material toughness. However, excessive PWHT duration may lead to a reduction in tensile strength. Therefore, selecting optimal PWHT parameters is crucial to ensuring the reliability of welded structures in industrial applications.
Pengaruh Post Weld Heat Treatment Proses Pengelasan MIG Terhadap Kekuatan Tarik Baja Karbon AISI 1045 Fauzi, Yusuf Rizal; Arsyad, Muhammad
Journal of Energy, Materials, & Manufacturing Technology Vol 3 No 02 (2024): Journal of Energy, Materials, & Manufacturing Technology
Publisher : Unit Penelitian, dan Pengabdian Masyarakat (UPPM) Politeknik ATI Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61844/jemmtec.v3i02.772

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh proses post weld heat treatment (PWHT) terhadap kekuatan tarik pada pengelasan material similar atau sejenis. Penelitian ini menggunakan metode eksperimen. Sampel dalam penelitian ini adalah pengelasan material AISI 1045 menggunakan metode Metal Inert Gas (MIG) dengan penambahan PWHT. Proses pengelasan MIG menggunakan variasi kuat arus sebesar 80 A, 90 A, dan 100 A. Sedangkan proses PWHT menggunakan variasi suhu yaitu 600°C, 700°C, dan 800°C. Analisis data menggunakan metode deskriptif kuantitatif dari hasil pengujian tarik. Hasil penelitian menunjukkan bahwa: (1) Pada kekuatan tarik PWHT 600°C sebesar 893.33 MPa memiliki nilai paling baik atau lebih tinggi dibandingkan dengan PWHT 800°C, dan PWHT 700°C dengan nilai sebesar 680,88 MPa dan Non PWHT material memberikan nilai sebesar 658.66 MPa. (2) temperatur PWHT dapat mempengaruhi kekuatan tarik. (3) Perlakuan pengelasan dengan kuat arus sebesar 100 A dan PWHT 600°C pada material AISI 1045 adalah yang paling optimal, karena memiliki nilai kekuatan tarik tertinggi.
Co-Authors Agus Irawan Anhar Khalid Barry, Akmal Ela Heka, Akbar Hairul Anwar, Hairul Halman Heka, Akbar Ela Mey Risa, Mey Muhammad Arsyad Muhammad Teguh Nuryadin Ramly, Ismail Saberani Saberani, Saberani Siti Nur Aisah Solly Aryza Sonief, Achmad As’ad Wahyono Suprapto