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Related Experiment Video

Updated: Sep 3, 2025

Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method

Experimental Implementation of a New Composite Fabrication Method: Exposing Bare Fibers on the Composite Surface by the Soft Layer Method

Published on: October 6, 2017

Fe/Mg/Fe Multilayer Composite Sheet Fabricated by Roll Cladding.

Daxin Ren^1,2, Yanhua Ma³, Rencheng Zheng^2,4

¹School of Automotive Engineering, Dalian University of Technology, Dalian 116024, China.

Materials (Basel, Switzerland)

|July 27, 2022

Summary

A new Fe/Mg/Fe composite sheet was created using roll cladding. This process enhanced Mg surface hardness and improved metallurgical bonding between Mg and steel via a zinc-rich transition layer.

Keywords:

cladding composites hardness magnesium microstructure steel

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Published on: May 17, 2018

Area of Science:

Materials Science
Metallurgy
Surface Engineering

Background:

Magnesium (Mg) alloys offer lightweight advantages but require surface hardening for broader applications.
Galvanized steel provides corrosion resistance but achieving strong metallurgical bonds with Mg alloys is challenging.

Purpose of the Study:

To fabricate a novel multilayer Fe/Mg/Fe composite sheet.
To investigate the effect of roll cladding on the Mg surface hardness and interfacial bonding.
To analyze the microstructure of the Mg/steel interface and the role of zinc.

Main Methods:

Fabrication of Fe/Mg/Fe multilayer composite sheets using roll cladding of galvanized steel and Mg alloy sheets.
Microstructural analysis of the Mg/steel interface using electron microscopy and phase identification.
Measurement of Mg surface hardness before and after cladding.

Main Results:

The roll-cladded composite sheet exhibited significantly improved Mg surface hardness, increasing from HV 65 to HV 132.
Metallurgical bonding was achieved and improved with reduction ratios exceeding 10%.
A 5-10 μm thick transition layer composed of zinc and a Mg-Zn intermetallic compound (0.97Mg-0.03Zn) formed at the Mg/steel interface.

Conclusions:

Roll cladding is an effective method for producing Fe/Mg/Fe multilayer composites with enhanced Mg surface hardness.
The zinc coating on galvanized steel plays a crucial role in promoting metallurgical bonding by forming beneficial intermetallic phases at the interface.
The developed composite material shows potential for applications requiring lightweight components with improved surface durability.