Interfacial microstructures and properties of aluminum alloys/galvanized low-carbon steel under high-pressure torsion
SCIE
SCOPUS
- Title
- Interfacial microstructures and properties of aluminum alloys/galvanized low-carbon steel under high-pressure torsion
- Authors
- Liu, Y; Bian, XF; Zhang, K; Yang, CC; Feng, L; Kim, HS; Guo, J
- Date Issued
- 2014-12
- Publisher
- ELSEVIER SCI LTD
- Abstract
- A new composite processing technology characterized by hot-dip Zn-Al alloy process was developed to achieve a sound metallurgical bonding between Al-7 wt% Si alloy (or pure Al) castings and low-carbon steel inserts, and the variations of microstructure and property of the bonding zone were investigated under high-pressure torsion (HPT). During hot-dipping in a Zn-2.2 wt% Al alloy bath, a thick Al5Fe2Znx phase layer was formed on the steel surface and retarded the formation of Fe-Zn compound layers, resulting in the formation of a dispersed Al3FeZnx phase in zinc coating. During the composite casting process, complex interface reactions were observed for the Al-Fe-Si-Zn (or Al-Fe-Zn) phases formation in the interfacial bonding zone of Al-Si alloy (or Al)/galvanized steel reaction couple. In addition, the results show that the HPT process generates a number of cracks in the Al-Fe phase layers (consisting of Al5Fe2 and Al3Fe phases) of the Al/aluminized steel interface. Unexpectedly, the Al/galvanized steel interface zone shows a good plastic property. Beside the Al/galvanized steel interface zone, the microhardnesses of both the interface zone and substrates increased after the HPT process. (C) 2014 Elsevier Ltd. All rights reserved.
- Keywords
- Aluminum alloys; Low-carbon steel; Hot-dipping; Interface; High pressure torsion; ZINC-COATED STEEL; MILD-STEEL; AL SYSTEM; IRON; DIFFUSION; ALLOY; STRENGTH; JOINTS; LASER; INTERLAYER
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/13677
- DOI
- 10.1016/J.MATDES.2014.07.053
- ISSN
- 0261-3069
- Article Type
- Article
- Citation
- MATERIALS & DESIGN, vol. 64, page. 287 - 293, 2014-12
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.