Effects of Sr Additions on the Interfacial Reaction Layers Formed between Liquid Al-Si-Cu Alloy and Cast Iron

Kyoung-Min Min; Je-Sik Shin; Jeong-Min Kim

doi:10.3740/MRSK.2023.33.9.353

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2023 Vol.33, Issue 9 Next Page

Research Paper

Effects of Sr Additions on the Interfacial Reaction Layers Formed between Liquid Al-Si-Cu Alloy and Cast Iron

27 September 2023. pp. 353-359

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Abstract

This study investigated the growth behavior and characteristics of compounds formed at the interface between a liquid Al-Si-Cu alloy and solid cast iron. Through microstructural analyses, it was observed that various AlFe and AlFeSi phases are formed at the interface, and the relative proportion of each phase changes when small amounts of strontium are added to the Al alloy. The results of the microstructural analysis indicate that the primary phases of the interfacial compounds in the Al-Si-Cu base alloy are Al₈Fe₂Si and Al_4.5FeSi. However, in the Sr-added alloys, significant amounts of binary AlFe intermetallic compounds such as Al₅Fe₂ and Al₁₃Fe₄ formed, in addition to the AlFeSi phases. The inclusion of Sr has a slight diminishing effect on the rate at which the interfacial compounds layer thickens during the time the liquid Al alloy is in contact with the cast iron. The study also discusses the nano-indentation hardness and micro-hardness of the interfacial phases.

Keywords

Al-Si-Cu

cast iron

interface

compound

strontium

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 33
No :9
Pages :353-359
Received Date : 2023-07-11
Revised Date : 2023-07-11
Accepted Date : 2023-08-29
DOI :https://doi.org/10.3740/MRSK.2023.33.9.353

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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