Proceedings of the 6th Mechanical Engineering, Science and Technology International conference (MEST 2022)

Influence of Tempering Time on the Microstructure, Hardness and Impact Toughness of Ductile Cast Iron

Authors
Herry Oktadinata1, *, Sri Mulyati Latifah2, Sastrawan Sastrawan1
1Mechanical Engineering Department, Universitas Jenderal Achmad Yani, Bandung, Indonesia
2Metallurgy Engineering Department, Universitas Jenderal Achmad Yani, Bandung, Indonesia
*Corresponding author. Email: herry.oktadinata@yahoo.com
Corresponding Author
Herry Oktadinata
Available Online 19 April 2023.
DOI
10.2991/978-94-6463-134-0_10How to use a DOI?
Keywords
Tempering; Microstructure; Cast Iron
Abstract

This study aims to obtain a suitable tempering time for ductile cast iron on microstructure, hardness, and toughness. The investigated ductile cast iron Y-block contains a carbon content of 3.45 wt%, silicon 2.6 wt%, manganese 0.635 wt.%, chromium 0.275 wt.%, nickel 1.58 wt.%, molybdenum 0.177 wt.%, and magnesium 0.1 wt% with a hardness of 41.5 HRC in the as-cast condition. In this experiment, the heat treatment was carried out with heating at 850 ℃ and holding time for 1 h. Then it was quenched with oil-cooling media and followed by a tempering process. Tempering at 350 ℃ was conducted with differences in holding times, 1 h, 2 h, and 3 h, respectively. The results show that a tempering with a holding time of 1 h had a hardness of 52.83 HRC and an impact energy of 1.90 J. Tempering with a hold time of 2 h had a hardness of 50 HRC and an impact energy of 2.28 J. And tempering for 3 h had a hardness of 46.3 HRC and impact energy of 2.80 J. From these results, it can be concluded that tempering time influences the mechanical properties of ductile cast iron. The longer the tempering time, the lower the hardness value and the higher the toughness. It can be attributed to fragmented carbides and graphite nodule evolution during heat treatment.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 6th Mechanical Engineering, Science and Technology International conference (MEST 2022)
Series
Advances in Engineering Research
Publication Date
19 April 2023
ISBN
978-94-6463-134-0
ISSN
2352-5401
DOI
10.2991/978-94-6463-134-0_10How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

TY  - CONF
AU  - Herry Oktadinata
AU  - Sri Mulyati Latifah
AU  - Sastrawan Sastrawan
PY  - 2023
DA  - 2023/04/19
TI  - Influence of Tempering Time on the Microstructure, Hardness and Impact Toughness of Ductile Cast Iron
BT  - Proceedings of the 6th Mechanical Engineering, Science and Technology International conference (MEST 2022)
PB  - Atlantis Press
SP  - 99
EP  - 106
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-134-0_10
DO  - 10.2991/978-94-6463-134-0_10
ID  - Oktadinata2023
ER  -