Effect of Rare Earth Elements on Erosion Resistance of Nitrocarburized Layers of 38CrMoAl Steel
Effect of Rare Earth Elements on Erosion Resistance of Nitrocarburized Layers of 38CrMoAl Steel作者机构:School of Mechanical & Power Engineering Shanghai Jiao Tong University Shanghai 200030 China . Engineering) College of Machinery and Electronics Information Shanghai Normal University Shanghai 201418 China
出 版 物:《Journal of Rare Earths》 (稀土学报(英文版))
年 卷 期:2004年第22卷第3期
页 面:406-409页
核心收录:
学科分类:08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程(可授工学、理学学位)]
基 金:CultivatingProgramfor"EliteforNewCentury"ofMinistryofEducationP .R .C ( [2 0 0 2 ] 8)
主 题:metal materials rare earth elements nitrocarburizing erosion resistance impact toughness rare earths
摘 要:Effect of rare earth elements (RE) on erosion resistance of nitrocarburized layer of 38CrMoAl steel was investigated. The results indicate that significant improvement occurs in erosion resistance of nitrocarburized 38CrMoAl steel by introducing RE during nitrocarburizing processing as compared with conventional nitrocarburizing processing. Results of mechanical testing show that both hardness and impact toughness of RE-nitrocarburizing layer of 38CrMoAl steel increase as compared with the conventional one. Optical microscopy reveals that there is improvement in the nitrocarburized layer attributed to the introduction of RE, which results in improvement in erosion resistance. Surface morphology observation of tested samples reveals that predominantly furrow-like peelings from plastic deformation are observed for RE nitrocarburizied 38CrMoAl steel, while the furrow-like peeling with initial cross crack and large grinding peelings were observed for conventionally nitrocarburized samples.