Cold Roll Bonding of Tin-Coated Steel Sheets with Subsequent Heat Treatment

Illia Hordych,Hans Jürgen Maier,Sebastian Herbst,Florian Nürnberger,Khemais Barienti

doi:10.3390/met11060917

Abstract

One possibility to increase the interface strength of cold roll bonded materials is the application of a thin intermediate layer. In the present study, a tin coating was employed to strengthen the interface formed between cold roll bonded steel sheets, and the impact of subsequent heat treatment on the resulting bonding strength was investigated. To increase the bond strength by diffusion, the tin-coated steel bonds underwent heat post-treatment between temperatures of 150 °C and 300 °C for different dwell times. The results demonstrate that the use of tin as an active intermediate layer increases the bond area established. Moreover, the thin tin coating results in the formation of an active intermediate layer that directly takes part in the joining process by establishing a reactive link between the two substrates. A subsequent heat treatment further affects the bond strength by diffusion of tin at the interface.

Highlights

Cold Roll Bonding of Tin-CoatedCold roll bonding (CRB) is a rolling operation to join two or more metal sheets at room temperature [1]
The bond strength of the non-heat-treated samples demonstrates a clear dependence on the reduction ratio
The effect of heat post-treatment on the bond strength upon cold roll bonding was studied for tin-coated steel sheets

Summary

Introduction

Cold roll bonding (CRB) is a rolling operation to join two or more metal sheets at room temperature [1]. CRB was shown to be an effective process for bonding similar as well as dissimilar metals depending on the specific demands set by different applications. Pan et al demonstrated the advantages of the cross-shear rolling technique in comparison with conventional rolling, resulting in lowered load forces to obtain the same level of the bond strength [2]. Acoff in cooperation with Chaudhari [5] and Luo [6,7] tested the joining of dissimilar metals such as titanium and aluminum arranged in multilayers. With a developed numerical model using a slab method, they could achieve a good agreement between the numerical and experimental results for the prediction of the bond strength

Methods

Results

Conclusion