Microstructure of Fe-Based Alloy Composite Coatings Reinforced by Ti(C_(0.3)N_(0.7)) Particles Through Laser Cladding Technology

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英文篇名：Microstructure of Fe-Based Alloy Composite Coatings Reinforced by Ti(C_0.3N_0.7) Particles Through Laser Cladding Technology 作者：QI ; Yong-tian ; CAO ; Zhao-xia ; SHENG ; Li-ying ; CAO ; Run-ping 英文作者：QI Yong-tian,CAO Zhao-xia,SHENG Li-ying,CAO Run-ping (Inner Mongolia Baotou Vocational and Technical College,Baotou 014030,Inner Mongolia,China) 英文关键词：Ti(C0.3N0.7) particle; TiN; laser cladding; microstructure 中文刊名：YING 英文刊名：钢铁研究学报(英文版) 机构：Inner Mongolia Baotou Vocational and Technical College; 出版日期：2013-08-15 出版单位：Journal of Iron and Steel Research(International) 年：2013 期：v.20 基金：Item Sponsored by Higher Education Fund of Inner Mongolia of China(nyzy11266) 语种：英文; 页：YING201308013 页数：5 CN：08 ISSN：11-3678/TF 分类号：81-85

摘要

Fe-based alloy layer reinforced by Ti(C,N) particles was produced on the surface of cast steel.X-ray diffraction (XRD) was used for phase identification in the composite coating.The microstructure of laser cladding layer was analyzed by means of optical microscope (OM),electron probe microscope analyzer (EPMA),scanning electron microscope (SEM) and transmission electron microscope (TEM).The results show that Ti(C0.3N0.7) particle is introduced by an in-situ metallurgical reaction of TiN particle and graphite powder in the process of laser cladding.The shape of lots of Ti(C0.3N0.7) particle is irregular.The sizes of Ti(C0.3N0.7) particles range from 0.1 to 6.0 μm,and they are dispersed evenly in the matrix,which is fine dendritic or cellular crystal.A new kind of phase named Ti(C0.3N0.7) particles are tightly bonded with α-Fe microstructure,and there is a clean and smooth phase interface between ceramic reinforcement phase and the matrix.
        Fe-based alloy layer reinforced by Ti(C,N) particles was produced on the surface of cast steel.X-ray diffraction (XRD) was used for phase identification in the composite coating.The microstructure of laser cladding layer was analyzed by means of optical microscope (OM),electron probe microscope analyzer (EPMA),scanning electron microscope (SEM) and transmission electron microscope (TEM).The results show that Ti(C0.3N0.7) particle is introduced by an in-situ metallurgical reaction of TiN particle and graphite powder in the process of laser cladding.The shape of lots of Ti(C0.3N0.7) particle is irregular.The sizes of Ti(C0.3N0.7) particles range from 0.1 to 6.0 μm,and they are dispersed evenly in the matrix,which is fine dendritic or cellular crystal.A new kind of phase named Ti(C0.3N0.7) particles are tightly bonded with α-Fe microstructure,and there is a clean and smooth phase interface between ceramic reinforcement phase and the matrix.

引文

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