Modelling of formation of stock surface and subsurface layers in breakdown rolling of aluminium alloy

Michal Krzyzanowski¹ , Michael F. Frolish¹, W. Mark Rainforth¹, John H. Beynon²

¹Institute for Microstructural and Mechanical Process Engineering, The University of Sheffield S1 3JD, UK. ²Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.

DOI:

https://doi.org/10.7494/cmms.2007.1.0125

Abstract:

Simulations of the reheating and breakdown rolling of the Al-Mg-Mn aluminium alloy AA3104 carried out using a two-high laboratory mill were supported by detailed numerical modelling of the stock surface layer formation. The model of the stock/roll interface is usually a micro-part of a more complex macro-finite-element model. Corresponding linking of modelling scales is a necessary stage for numerical analysis of fine mechanisms of the interface formation. This procedure allows for consideration of the fine mechanisms responsible for formation of the scale/metal interface while, at the same time, reducing the number of elements under consideration. It has been shown that a small amount of Mg (as oxides) was intermixed into the subsurface layer of a few microns depth by deformation during rolling. The mechanisms which led to the deformation and mixing of the oxide particles into the subsurface layer arose from slip at the roll/stock interface and the action of roll surface asperities on the stock surface.

Cite as:

Krzyzanowski, M., Frolish, Rainforth, W.M. & Beynon, J., (2007). Modelling of formation of stock surface and subsurface layers in breakdown rolling of aluminium alloy. Computer Methods in Materials Science, 7(1), 88 – 93. https://doi.org/10.7494/cmms.2007.1.0125

Article (PDF):

Keywords:

Simulation, Rolling, Stock surface, Subsurface layers, Multiscale modelling

References: