高碳钢氧化皮的形成及其机械剥离性能  

Oxide scale formation on high-carbon steel and its mechanical descaling property

作　　者：巩党国[1] 方峰[1] 蒋建清[1] 胡显军 陈少慧 

机构地区：[1]东南大学材料科学与工程学院江苏省先进金属材料重点实验室,江苏南京211189 [2]沙钢集团,江苏张家港215625

出　　处：《材料热处理学报》2009年第5期167-171,共5页Transactions of Materials and Heat Treatment

基　　金：国家"973"前期研究专项(2007CB616903);张家港市科技攻关项目(ZJG200609)

摘　　要：在Gleeble-3500型热模拟试验机上对高碳钢SWRH72A盘条进行了不同条件下的氧化试验,采用OM、SEM和XRD等技术对氧化皮形貌、厚度和结构进行表征。结果表明,高碳钢氧化皮一般呈Fe1-yO和Fe3O4两层结构,其厚度与氧化温度的关系近似符合Arrhenius方程,并随氧化时间呈抛物线型增长,氧化皮中Fe1-yO/Fe3O4厚度比与氧化温度和氧化时间的关系与厚度的变化规律基本一致。机械剥离试验结果表明,当氧化皮较薄时(<27μm),机械剥离率随厚度近似成线性增长,而当氧化皮厚度达到一定程度后(27μm),机械剥离率不再增加,基本保持不变。The simulated oxidation tests of high carbon steel SWRH72A wire were carried out on a Gleeble-3500 thermo-mechanical simulator and the mierostructure, thickness and phase composition of oxide scales formed on the steel were characterized by OM, SEM and XRD. The results show that typical oxide scale on high-carbon steel mostly consists of Fe1-y O and Fe3O4, and the dependence of scale thickness on oxidation temperature obeys Arrhenius equation while that on oxidation time obeys parabolic law. The thickness ratio of Fe1-y O/Fe3O4 varies with oxidation temperature and time and the variation is similar with that of the thickness. In addition, the mechanical desealing ration increases linearly with scale thickness （S） when S 〈 27μm, and keeps unchanged when S ≥ 27μm.

关 键 词：高碳钢 氧化皮 厚度 结构 机械剥离 

分 类 号：TG142.31[一般工业技术—材料科学与工程]