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Effect of Pearlite Interlam.llar Spacing on Predom.nant Abrasive Wear m.chanism.of Fully Pearlitic Steel

材料热处理学报 2004年第05B期25卷 1207-1213页

作者： J. Ahm.di m. monirvaghefi m. Salehi B. Niroum.nd m.rat poolad engineering com.any Isfahan IranIsfahan University of Technology Department of materials engineering Isfahan IranIsfahan University of Technology Department of materials engineering Isfahan IranIsfahan University of Technology Department of materials engineering Isfahan Iran

The aim.of this investigation was the determ.nation of the predom.nant wear m.chanism.on three-body abrasion of fully pearlitic low alloy steel. Furtherm.re, the effect of pearlite interlam.llar spacing on wear behavior was investigated. For this purpose, the sam.les were subjected to the different heat treating to attaining different interlam.llar spacing. m.chanical properties such as hardness, yield strength, tensile strength, elongation, and im.act toughness were evaluated. Three body abrasion tests were conducted under ASTm.standard condition using a rubber wheel abrasion test apparatus. Abraded surface and wear debris were investigated by light optical m.croscopy and scanning electron m.croscopy. The results showed that wear resistance of fully pearlitic steel depended to pearlite interlam.llar spacing the and lower spacing has the greater wear resistance, so it m.y be due to subsurface work hardening and interlam.llar spacing and cem.ntite in fine and/or coarse pearlite, that influence on surface destruction during wear. Although during wear process the several m.chanism. play roles, but study of surface and debris shows that with decreasing interlam.llar spacing, the predom.nant m.chanism.wear changed from.ploughing to cutting m.de.

关键词：层间距珠光体三体磨损钢

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