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论文类型：期刊论文

发表时间：2012-08-01

发表刊物：OXIDATION OF METALS

收录刊物：SCIE、EI、Scopus

卷号：78

期号：1-2

页面范围：145-152

ISSN号：0030-770X

关键字：Steel; Oxidation; Compressive stress; Magnetite; Wustite; Cooling

摘要：During hot rolling, the existence of a wustite layer is favored from the standpoint of improved descaling performance. In this work, the mutual effect of external compressive stress and cooling on the phase transformation of oxide scales formed on steel was investigated. Optical microscopy images showed that a fast cooling rate of about 80 A degrees C/min promoted the formation of magnetite/Fe eutectoid. When applying a compressive stress, growth of the magnetite/Fe eutectoid was increased. It was inferred that the promoting effect of fast cooling rate on the diffusion is advantageous to the growth of magnetite/Fe eutectoid. The increase of system chemical potential by the compressive stress also promoted the growth of magnetite/Fe eutectoid.