TY - GEN
T1 - Characterization of fractured section of modified HP-40 pipe in ammonia primary reformer
AU - Fauzi, Ade Rahman
AU - Anawati, Anawati
AU - Wibowo, Tri
N1 - Publisher Copyright:
© 2021 Author(s).
PY - 2021/8/10
Y1 - 2021/8/10
N2 - Reformers made of modified HP-40 alloy (23Cr-35Ni) were used in the ammonia industry to produce hydrogen. One of the pipes in the reformer experienced failure. To understand the reason for such failure, the fractured section was characterized by SEM-EDS, creep tests, and polarization tests. The creep test indicated that the pipe failure was caused by overheating, which induced crack along the metal grain boundaries. The optical microscope images of the alloy revealed voids and micro-cracks in the fractured section. The increase in porosity due to diffusion of hydrogen gas shortened the time to rupture. EDS analysis detected high carbon content associated with the carbide phase in the fracture section. The carbide phase induced creep cracking in the alloy leading to the failure. The creep test confirmed that the material had experienced severe deformation from creep cracking.
AB - Reformers made of modified HP-40 alloy (23Cr-35Ni) were used in the ammonia industry to produce hydrogen. One of the pipes in the reformer experienced failure. To understand the reason for such failure, the fractured section was characterized by SEM-EDS, creep tests, and polarization tests. The creep test indicated that the pipe failure was caused by overheating, which induced crack along the metal grain boundaries. The optical microscope images of the alloy revealed voids and micro-cracks in the fractured section. The increase in porosity due to diffusion of hydrogen gas shortened the time to rupture. EDS analysis detected high carbon content associated with the carbide phase in the fracture section. The carbide phase induced creep cracking in the alloy leading to the failure. The creep test confirmed that the material had experienced severe deformation from creep cracking.
UR - http://www.scopus.com/inward/record.url?scp=85113983353&partnerID=8YFLogxK
U2 - 10.1063/5.0059988
DO - 10.1063/5.0059988
M3 - Conference contribution
AN - SCOPUS:85113983353
T3 - AIP Conference Proceedings
BT - Proceedings of the 4th International Seminar on Metallurgy and Materials, ISMM 2020
A2 - Khaerudini, Deni Shidqi
A2 - Darsono, Nono
A2 - Rhamdani, Ahmad Rizky
A2 - Utomo, Muhammad Satrio
A2 - Thaha, Yudi Nugraha
A2 - Kartika, Ika
A2 - Nugraha, Ahmad Ridwan Tresna
PB - American Institute of Physics Inc.
T2 - 4th International Seminar on Metallurgy and Materials: Accelerating Research and Innovation on Metallurgy and Materials for Inclusive and Sustainable Industry, ISMM 2020
Y2 - 19 November 2020 through 20 November 2020
ER -