@inproceedings{27a213dde03c445dbb1053d674d6947a,
title = "Design of Bimetal Cylinder Heads via Additive Manufacturing: Bonding Mechanism and Performance Evaluation of GH4169/Cast Iron Bimetal",
abstract = "To address the potential issue of poor interface bonding that may limit the widespread engineering application of bimetals, a study and evaluation of the bonding mechanisms and bonding performance at the bimetal interface were conducted. A multi-physics simulation method was used to capture the temperature and flow field characteristics within the melt pool at the bimetal interface. Then, the microstructure, elemental distribution, and phases of the bimetal interface were characterized. The basic mechanical properties and shear strength were tested. This study found that the eddies formed within the melt pool, driven by the temperature gradient, help to uniformly mix the metal elements, resulting in an excellent metallurgical bond at the bimetal interface. The bonding at the interface is accompanied by element diffusion, with the Fe-Ni compounds formed in the DZ enhancing its performance. The carbides formed in the HAZ may lead to stress concentration at the interface, weakening its load-bearing capacity. The bimetal interfacial shear strength is 24.12\% higher than that of the substrate. This research provides insights for improving the bonding performance of bimetals and offers data support for their engineering applications.",
keywords = "Additive Manufacturing, bimetal, Bonding mechanism, Cylinder head, Performance evaluation",
author = "Yixuan Fu and Jinxiang Liu and Yungui Liu and Kaiheng Sun and Yuming Ye and Weiqing Huang",
note = "Publisher Copyright: {\textcopyright} 2025 SPIE.; 4th International Conference on New Materials, Machinery, and Vehicle Engineering, NMMVE 2025 ; Conference date: 11-07-2025 Through 13-07-2025",
year = "2025",
month = nov,
day = "1",
doi = "10.1117/12.3084444",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Jinyang Xu and Davim, \{J. Paulo\}",
booktitle = "Fourth International Conference on New Materials, Machinery, and Vehicle Engineering, NMMVE 2025",
address = "United States",
}