Mechanical properties of oxide scale on a high speed steel roll material surface

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• 作者：H T ZhuQ ZhuP B KosasihW F H ZamriaA K Tieu
• 会议时间：2013-06-01
• 关键词：mechanical property ; oxide scale ; high-speed steel ; nano indentation
• 作者单位：School of Mechanical,Materials and Mechatronic Engineering,University of Wollongong,Wollongong NSW 2522,Australia
• 母体文献：第五届宝钢学术年会论文集
• 会议名称：第五届宝钢学术年会
• 会议地点：上海
• 主办单位：中国金属学会
• 语种：chi

摘要

A work roll grade high speed steel material was isothermally oxidised in both dry and 12.5% H2O humid air.Nano-indentation tests were performed to investigate the mechanical properties,such as hardness and elastic modulus of the HSS sample,and oxide scales.The large difference in hardness between the carbides and the HSS matrix indicated that adding carbides significantly enhance the wear resistance of the HSS sample.It has been found that the difference in Young ' s modulus and hardness between the inner and outer oxide layers is due to the different oxide phase composition and microstructures of these two sub-layers.A finite element simulation was developed to study the nano indentation of the oxide layer formed on the surface of a high speed steel roll material.