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Effect of austempering holding time variations of 30, 60 and 90 minutes at 300 oc on the microstructure and toughness of nodular cast iron

The phases of the nodular cast iron matrix are similar to those of steel. Therefore, heat treatment of steel can be applied to nodular cast iron. A potential heat treatment for nodular cast iron is austempering. This study aimed to determine the effect of austempering holding time at 300 oC on th...

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Main Authors: Darmawan, A S, Anggono, A D, Yulianto, A, Febriantoko, B W, Hamid, A
Format: Conference or Workshop Item
Language:English
Published: 2023
Subjects:
TA401-492 Materials of engineering and construction. Mechanics of materials
Online Access:http://eprints.uthm.edu.my/11704/1/P16754_131643e2d80aa7bdd9c01976dae6eaff%201.pdf
http://eprints.uthm.edu.my/11704/
http://10.1088/1742-6596/2739/1/012029
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spelling my.uthm.eprints.117042024-11-27T03:19:34Z http://eprints.uthm.edu.my/11704/ Effect of austempering holding time variations of 30, 60 and 90 minutes at 300 oc on the microstructure and toughness of nodular cast iron Darmawan, A S Anggono, A D Yulianto, A Febriantoko, B W Hamid, A TA401-492 Materials of engineering and construction. Mechanics of materials The phases of the nodular cast iron matrix are similar to those of steel. Therefore, heat treatment of steel can be applied to nodular cast iron. A potential heat treatment for nodular cast iron is austempering. This study aimed to determine the effect of austempering holding time at 300 oC on the microstructure and toughness of nodular cast iron. The austempering process begins with austenitizing at a temperature of 850 oC for 60 minutes, then the quenching process is carried out in a salt bath until a temperature of 300 oC is held with variations of 30, 60, and 90 minutes, then cooled to room temperature. Metallographic testing was conducted to determine the phase change before and after the austempering process using a Scanning Electron Microscope (SEM). Meanwhile, impact testing was carried out to determine changes in toughness before and after the austempering process. At a holding time of 30 minutes, metallographic testing on the raw material produced a gray coarse pearlite phase, black nodular graphite surrounded by white ferrite. After the austempering process, gray fine pearlite and black nodular graphite appeared. At the holding time of 60 and 90 minutes, the graphite sizes were bigger. Austempering withholding times of 30, 60, and 90 minutes resulted in impact energy of 4.2, 10, and 11 Joule. From the results of the study, it was concluded that an increase in holding time would increase the size of the graphite and the toughness of nodular cast iron. 2023-10-13 Conference or Workshop Item PeerReviewed text en http://eprints.uthm.edu.my/11704/1/P16754_131643e2d80aa7bdd9c01976dae6eaff%201.pdf Darmawan, A S and Anggono, A D and Yulianto, A and Febriantoko, B W and Hamid, A (2023) Effect of austempering holding time variations of 30, 60 and 90 minutes at 300 oc on the microstructure and toughness of nodular cast iron. In: ISAIME DEPARTEMEN TEKNIK MESIN UNIVERSITAS HASANUDDIN. http://10.1088/1742-6596/2739/1/012029
institution Universiti Tun Hussein Onn Malaysia
building UTHM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tun Hussein Onn Malaysia
content_source UTHM Institutional Repository
url_provider http://eprints.uthm.edu.my/
language English
topic TA401-492 Materials of engineering and construction. Mechanics of materials
spellingShingle TA401-492 Materials of engineering and construction. Mechanics of materials
Darmawan, A S
Anggono, A D
Yulianto, A
Febriantoko, B W
Hamid, A
Effect of austempering holding time variations of 30, 60 and 90 minutes at 300 oc on the microstructure and toughness of nodular cast iron
description The phases of the nodular cast iron matrix are similar to those of steel. Therefore, heat treatment of steel can be applied to nodular cast iron. A potential heat treatment for nodular cast iron is austempering. This study aimed to determine the effect of austempering holding time at 300 oC on the microstructure and toughness of nodular cast iron. The austempering process begins with austenitizing at a temperature of 850 oC for 60 minutes, then the quenching process is carried out in a salt bath until a temperature of 300 oC is held with variations of 30, 60, and 90 minutes, then cooled to room temperature. Metallographic testing was conducted to determine the phase change before and after the austempering process using a Scanning Electron Microscope (SEM). Meanwhile, impact testing was carried out to determine changes in toughness before and after the austempering process. At a holding time of 30 minutes, metallographic testing on the raw material produced a gray coarse pearlite phase, black nodular graphite surrounded by white ferrite. After the austempering process, gray fine pearlite and black nodular graphite appeared. At the holding time of 60 and 90 minutes, the graphite sizes were bigger. Austempering withholding times of 30, 60, and 90 minutes resulted in impact energy of 4.2, 10, and 11 Joule. From the results of the study, it was concluded that an increase in holding time would increase the size of the graphite and the toughness of nodular cast iron.
format Conference or Workshop Item
author Darmawan, A S
Anggono, A D
Yulianto, A
Febriantoko, B W
Hamid, A
author_facet Darmawan, A S
Anggono, A D
Yulianto, A
Febriantoko, B W
Hamid, A
author_sort Darmawan, A S
title Effect of austempering holding time variations of 30, 60 and 90 minutes at 300 oc on the microstructure and toughness of nodular cast iron
title_short Effect of austempering holding time variations of 30, 60 and 90 minutes at 300 oc on the microstructure and toughness of nodular cast iron
title_full Effect of austempering holding time variations of 30, 60 and 90 minutes at 300 oc on the microstructure and toughness of nodular cast iron
title_fullStr Effect of austempering holding time variations of 30, 60 and 90 minutes at 300 oc on the microstructure and toughness of nodular cast iron
title_full_unstemmed Effect of austempering holding time variations of 30, 60 and 90 minutes at 300 oc on the microstructure and toughness of nodular cast iron
title_sort effect of austempering holding time variations of 30, 60 and 90 minutes at 300 oc on the microstructure and toughness of nodular cast iron
publishDate 2023
url http://eprints.uthm.edu.my/11704/1/P16754_131643e2d80aa7bdd9c01976dae6eaff%201.pdf
http://eprints.uthm.edu.my/11704/
http://10.1088/1742-6596/2739/1/012029
_version_ 1817845157868863488
score 13.223943

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