标题：Effect of molybdenum on the high-temperature properties of TiC-TiB2reinforced Fe-based composite laser cladding coatings
作者：Zhang, M. ;Liu, S.S. ;Luo, S.X. ;Qu, K.L.
作者机构：[Zhang, M. ] School of Mechanical Engineering, Shandong University, Jinan; 250061, China;[Liu, S.S. ;Luo, S.X. ;Qu, K.L. ] School of Materials Science 更多
来源：Journal of Alloys and Compounds
摘要：Fe-Ti-B-Cr-Mo-C composite coatings with different molybdenum (Mo) content were in-situ fabricated on a 5CrNiMo die steel substrate by laser cladding. Effects of Mo on the microstructure and high -temperature properties of coatings were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), high-temperature oxidation and high-temperature wear resistance test. Results showed that block-like or cuboidal TiB2and Mo2B, as well as flower-like (Ti,Mo)C reinforced particles have been formed in the coatings. Amounts of martensite in the coating increased with the increasing of Mo. However, cracks are found in the coating while the addition of FeMo70exceeded 9 wt%. Mo improved the high-temperature oxidation resistance and reduced oxidation rate. Besides, the coatings processed the better high-temperature wear resistance with 9 wt% FeMo70.
© 2018 Elsevier B.V.