Title: Oxide scale behaviour and surface roughness under hot rolling conditions of Fe-Ni36 Invar alloy

Authors: Xiankai Zhang, Zhenyu Liu, Sihai Jiao, Guodong Wang

Addresses: The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, Liaoning 110004, China. ' The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang, Liaoning 110004, China. ' Research Institute, Baoshan Iron & Steel Co., Ltd., 889 Fujin Road, Baoshan District, Shanghai 201900, China. ' Research Institute, Baoshan Iron & Steel Co., Ltd., 889 Fujin Road, Baoshan District, Shanghai 201900, China

Abstract: In this study, hot rolling tests of Fe-Ni36 invar alloy were carried out on a 2-high mill at different temperatures and various reductions. The specimens of the hot rolling tests were designed in the shape of stairs to investigate the relationship between oxide scale, surface roughness and reduction. The surface characteristics and the cross section morphology of the oxide scale were observed under an optical microscope and with Scanning Electron Microscopy (SEM). The chemical compositions of the oxide scales were investigated using Energy Dispersive Spectroscopy (EDS). The thickness of the oxide scale and surface roughness were measured. It was found that with an increase of reduction, the oxide scale thickness and the surface roughness decrease obviously.

Keywords: oxide scale; surface roughness; invar alloys; hot rolling.

DOI: 10.1504/IJSURFSE.2009.029142

International Journal of Surface Science and Engineering, 2009 Vol.3 No.5/6, pp.471 - 481

Available online: 06 Nov 2009 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article