含碳量对Fe-20％Cr合金高温耐磨性的影响  

INFLUENCE OF CARBON CONTENT ON WEAR RESISTANCE OF Fe-20 %Cr ALLOY AT ELEVATED TEMPERATURES

作　　者：邢建东[1] 周庆德[1] 

机构地区：[1]西安交通大学

出　　处：《钢铁》1992年第8期56-60,共5页Iron and Steel

基　　金：国家自然科学基金

摘　　要：本文用自制的高温磨损试验机对碳含量0.82～2.94％的Fe-20％Cr合金进行了800℃下的高温磨损试验,并用扫描电镜观察了磨损面和磨损面亚表面的情况。主要结论:(1)在本试验的磨损条件下增加碳含量将有益于提高800℃下材料的耐磨性。(2)由于在高温下基体的塑性变形使碳化物产生了碎裂,因此,提高基体抵抗塑性变形的能力将对支撑碳化物并使材料的高温磨损耐磨性的提高起到重要的作用。Abrasion wear test of Fe-20 %Cr ahoy with carbon content ranging from 0.82 % to 2.94 % was conducted at 800℃ in a self-made high temperature wear tester. The worn surfaces and subsurfaces were observed by SEM. The main conclusions are (1) Under the test conditions an increase in carbon content (hence amount of eutectic carbides) increases the wear resistance at 800℃. (2) Carbide fibers fracture due to plastic deformation of the matrix at high temperature. Hence, the resistance to plastic deformation of the matrix plays an important role to support the carbide fibers and to increase the high temperature wear resistance.

关 键 词：铁铬合金 含碳量 高温 耐磨性 

分 类 号：TG135.6[一般工业技术—材料科学与工程]