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论文类型：期刊论文

发表时间：2010-02-01

发表刊物：JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL

收录刊物：SCIE

卷号：17

期号：2

页面范围：27-30

ISSN号：1006-706X

关键字：compressive stress; oxide scale; wustite; magnetite; cooling

摘要：The microstructure development of oxide scale on pure iron under the mutual action of compressive stress and cooling conditions was investigated. Oxide scale structure was examined by optical microscopy (OM) and scanning electron microscopy (SEM). It was found that oxide scale formed under normal cooling conditions had a structure mainly consisting of an outer magnetite and an inner wustite layer. When a compressive stress was applied, numerous magnetite precipitates formed within wustite layer homogeneously at starting cooling temperature of 900 degrees C, and the wustite layer in the scale was transformed into a mixture of mostly magnetite/iron eutectoid and magnetite layer at starting cooling temperature of 700 degrees C. The wustite decomposition and precipitation of magnetite in wustite under compressive stress were discussed.