cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Hamdan Akbar Notonegoro
Contact Email
hamdan_an@untirta.ac.id
Phone
+62254-395502
Journal Mail Official
flywheel@untirta.ac.id
Editorial Address
Department of Mechanical Engineering, Faculty of Engineering, Universitas Sultan Ageng Tirtayasa Jl. Jend. Sudirman Km. 3 Cilegon,
Location
Kab. serang,
Banten
INDONESIA
FLYWHEEL : Jurnal Teknik Mesin Untirta
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 24077852     EISSN : 25977083     DOI : https://doi.org/10.36055/fwl.v0i0.
Core Subject : Science, Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
The journal publishes original and (mini)review articles covering the concepts of materials science, mechanics, kinematics, thermodynamics, energy and environment, mechatronics and robotics, fluid mechanics, tribology, cybernetics, industrial engineering and structural analysis. The journal follows new trends and progress proven practice in the mechanical engineering and also in the closely related sciences as are electrical, civil and process engineering, medicine, microbiology, ecology, agriculture, transport systems, aviation, and others, thus creating a unique forum for interdisciplinary or multidisciplinary dialogue.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 1 Documents
 1 
Search results for , issue "Vol 10, No 2 (2024): October" : 1 Documents clear
Microstructure Features and Degradation Mechanisms of Low-Pressure Evaporator Tube Steels in Combined Cycle Power Plants Nugraha, YangYang Gilang; Erwin, Erwin; Listijorini, Erny; Dwinanto, Dwinanto; Alhamidi, Ahmad Ali; Satria, Dhimas; Saefuloh, Iman; Yusuf, Yusvardi; Sunardi, Sunardi
FLYWHEEL : Jurnal Teknik Mesin Untirta Vol 10, No 2 (2024): October
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fwl.v10i2.39002

Abstract

A leakage failure occurred in a low-pressure evaporator tube of a Heat Recovery Steam Generator (HRSG) in a combined cycle power plant. The failed tube, manufactured from ST 37.8 CL1 steel, was investigated to determine the root cause of failure. The analysis included visual inspection, metallographic examination, and hardness testing. Visual observation revealed localized leakage regions associated with material degradation. Metallographic analysis showed a ferrite–pearlite microstructure with pronounced pearlite growth and the presence of micro-cavities concentrated along grain boundaries. Hardness measurements indicated that the failed tube exhibited higher hardness values (average 83.3 HRB) compared to unused material (average 76.6 HRB), reflecting microstructural evolution during service. The tube operated at approximately 143.8 °C under continuous internal pressure. Long-term exposure to these conditions promoted creep damage, characterized by the nucleation of micro-cavities at ferrite–pearlite interfaces. Progressive cavity growth and coalescence reduced ductility and facilitated crack initiation, ultimately leading to leakage. The findings demonstrate that creep-induced cavity formation associated with pearlite growth was the primary failure mechanism of the low-pressure evaporator tube.

Page 1 of 1 | Total Record : 1

 1 

Filter by Year

2024 2024


Reset
Filter By Issues
All Issue Vol 12, No 1 (2026): April Vol 11, No 2 (2025): October Vol 11, No 1 (2025): April Vol 10, No 2 (2024): October Vol 10, No 1 (2024): April Vol 9, No 2 (2023): October Volume 9, Issue 1, April 2023 Volume 8, Issue 2, October 2022 Volume 8, Issue 1, April 2022 Volume 7, Issue 2, October 2021 Volume 7, Issue 1, April 2021 Volume VI, Nomor 2, October 2020 Volume VI, Nomor 1, April 2020 Volume V Nomor 2, Oktober 2019 Volume V Nomor 1, April 2019 Volume IV Nomor 2, Oktober 2018 Volume IV Nomor 1, April 2018 Volume III Nomor 2, Oktober 2017 Volume III Nomor 1, April 2017 Volume II Nomor 2, November 2016 Volume II Nomor 1, April 2016 Volume I Nomor 2, November 2015 Volume I Nomor 1, April 2015 More Issue