AC8A Aluminum Quench Modification Using Banana Tree Sap Fluid

DOI

10.2991/aer.k.211129.038How to use a DOI?

Keywords

AC8A aluminum; quench modification; banana tree sap fluid

Abstract

AC8A aluminum is a silicon aluminum alloy which has a Si level between 11-13% wt, the material commonly used to make pistons. There is also the weakness of a piston with a high silicon content, which is brittle or brittle along with the increase in silicon content so that a rough and large primary silicon morphology is formed. For this reason, it is necessary to modify the aluminum silicon alloy by means of quench modification to get a smooth silicon structure. Banana tree sap fluid has a faster cooling rate than water and oil, tree sap fluid also contains alloying elements from metals such as P, Fe and During the cooling process of the material, it is hoped that the metal alloy elements in the banana tree sap fluid such as phosphorus can be diffused to the surface of the material so that the metal alloy elements function as a modifier that can smooth the rough and large primary silicon structure. The purpose of this research is to refine the rough and large primary silicon structure of the piston material and also to determine the hardness of the material. The method used in this study was direct experimentation, namely carrying out a solution treatment on aluminum AC8A until it was held at a temperature of 490 °C for 1 hour and then quench modification using a ratio of 2 cooling media, namely water and banana tree sap fluid. The material resulting from quench modification was carried out by observing the microstructure and hardness test. After that, the material is continued with the aging process at a temperature of 200 oC with a holding time of 1 hour and then cooled with compressed air for the material that has been aged, microstructure and hardness tests are carried out. From the results of the study it was concluded that the highest material hardness was 62.09 HRB, namely the material with the solution treatment of quenching water and continued the aging process at 200°C. The solution treatment process with rapid cooling can cause dislocation, so it is necessary to do the aging process.

Copyright

© 2021 The Authors. Published by Atlantis Press International B.V.

Open Access

This is an open access article under the CC BY-NC license.

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TY  - CONF
AU  - Roymons Jimmy Dimu
AU  - Antonius Pangalinan
AU  - Oktovianus Dharma Rerung
AU  - Mamiek Mardyaningsih
PY  - 2021
DA  - 2021/11/30
TI  - AC8A Aluminum Quench Modification Using Banana Tree Sap Fluid
BT  - Proceedings of the International Conference on Innovation in Science and Technology (ICIST 2020)
PB  - Atlantis Press
SP  - 168
EP  - 172
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.211129.038
DO  - 10.2991/aer.k.211129.038
ID  - Dimu2021
ER  -