Improved surface properties of D2 steel by laser surface alloying

被引：0
作者：
Enori Gemelli
Alain Gallerie
Fernando C. T. Kopp
Nelson H. A. Camargo
机构：
[1] Center of Technological Sciences,Department of Mechanical Engineering
[2] UDESC—Santa Catarina State University,Ecole National Supérieure d'Electrochemie et d'Electrométallurgie de Grenoble
[3] Institut National Polytechnique de Grenoble,undefined
来源：
Journal of Materials Science | 2005年 / 40卷
关键词：
Microstructure; Carbide; Chromia; Cyclic Condition; Oxidation Resistance;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The wear and the high-temperature oxidation resistance of the D2 steel (Fe-1.5 C-12 Cr-0.95 Mo-0.9 V-0.3 Mn) were increased by laser surface alloying after coating the surface with SiC or Cr3C2 powder. The surface alloys exhibit two microstructures: hypoeutectic and hypereutectic, respectively, all containing iron solid solutions and iron-chromium carbides, (Fe,Cr)7C3. The oxidation resistance of these alloys was measured in isothermal and cyclic conditions, and was shown to increase with silicon or chromium additions, particularly due to the formation of a chromia scale with excellent behaviour during thermal shoks. The surface alloy obtained with Cr3C2 also has shown a better resistance to wear due to its hypereutectic microstructure.
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页码：5649 / 5653
页数：4
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