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激光熔覆原位生成Ti(C,N)颗粒强化半钢轧辊熔覆层 被引量:10
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作者 齐勇田 邹增大 +1 位作者 王新洪 施瀚超 《焊接学报》 EI CAS CSCD 北大核心 2008年第8期69-72,共4页
以横流CO2激光束作为诱导热源,在铸造半钢轧辊ZUB160CrNiMo基材上形成了含有Ti(C,N)增强粒子的铁基熔覆层,用光镜、扫描电镜、X射线衍射、电子探针等手段对复合熔覆层中增强粒子的成分、形貌和尺寸进行了分析,并采用光学显微硬度... 以横流CO2激光束作为诱导热源,在铸造半钢轧辊ZUB160CrNiMo基材上形成了含有Ti(C,N)增强粒子的铁基熔覆层,用光镜、扫描电镜、X射线衍射、电子探针等手段对复合熔覆层中增强粒子的成分、形貌和尺寸进行了分析,并采用光学显微硬度计对复合熔覆层的显微硬度进行了测试和分析。结果表明,熔覆前加入的颗粒状TiN在激光熔覆过程中发生了分解,随后分解出的[Ti]又和石墨[C]和[N]分别发生了化合反应,原位生成了新的颗粒状强化相T1(C,N)。在熔覆层中的增强相是以Ti(C0.3N0.7)和Ti(C0.2N0.8)这两种形式存在的。在熔覆层中Ti(C,N)的形貌特征多呈外沿比较光滑、尺寸不等颗粒。颗粒相的大小在0.1~5μm之间,呈弥散分布。熔覆层的显微硬度达到800~900HV0.2。 展开更多
关键词 碳氮化钛 TiN 原位反应 激光熔覆 半钢轧辊
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Microstructure and Wear Properties of Laser Coating Reinforced by Ti(C_xN_(1-x)) on Adamite Roller 被引量:7
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作者 QI Yong-tian ZOU Zeng-da 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2009年第3期78-82,88,共6页
Fe-based layer with Ti(CxN1-x) particulates on Adamite roller surface was obtained by a 5 kW traverse-flowing CO2 laser cladding technology. The microstructures of the layer were detected by optical microscopy (OM... Fe-based layer with Ti(CxN1-x) particulates on Adamite roller surface was obtained by a 5 kW traverse-flowing CO2 laser cladding technology. The microstructures of the layer were detected by optical microscopy (OM),X-ray diffraction (XRD),scanning electron microscopy (SEM),and electron probe microscopy analysis (EMPA). The tests of wear resistance was carried out on the test machine. It was seen that a good metallurgical bonding between the coating and the substrate was achieved. The microstructure contains bulky dendritic crystal and small size Ti(CxN1-x) grains that are uniformly distributed in the solid solution matrix. The wear tests showed that the laser coating provided an excellent wear resistance property at room temperature. 展开更多
关键词 Ti(CxN1-x) laser cladding in-situ formation adamite roller
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