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| 激光熔覆制备钛基耐磨功能梯度材料 | |
| 引用本文： | 赵金,回丽,胡芳友,何雪浤,母久方,崔爱永.激光熔覆制备钛基耐磨功能梯度材料[J].中国激光,2007,34(s1):39-41. |
| 作者姓名： | 赵金 回丽 胡芳友 何雪浤 母久方 崔爱永 |
| 作者单位： | 赵金:东北大学 机械工程与自动化学院， 辽宁 沈阳 110004海军航空工程学院 青岛分院， 山东 青岛 266041 回丽:海军航空工程学院 青岛分院， 山东 青岛 266041沈阳航空工业学院机械与汽车学院， 辽宁 沈阳 110006 胡芳友:海军航空工程学院 青岛分院， 山东 青岛 266041 何雪浤:东北大学 机械工程与自动化学院， 辽宁 沈阳 110004 母久方:东北大学 机械工程与自动化学院， 辽宁 沈阳 110004 崔爱永:海军航空工程学院 青岛分院， 山东 青岛 266041 |
| 摘 要： | 以Ti, 陶瓷粉末和镍基自熔合金粉末按一定比例配置的混合粉末作为预置合金涂层，采用CO2气体激光进行多层熔覆，在Ti600合金表面制备出摩擦磨损性能沿厚度方向呈梯度变化的钛基功能梯度材料(FGM)。利用扫描电镜(SEM)及X射线能谱仪(EDX)分析了材料的微观组织和成份。结果表明，采用合适的合金粉末成份和激光熔覆工艺参数，可以获得原位自生TiC增强颗粒弥散分布且其含量呈梯度变化的钛基功能梯度材料。熔覆层组织均匀细密，各熔覆层之间无明显界限，且与基体呈良好冶金结合。 |
| 关 键 词： | 材料 钛合金 激光熔覆 功能梯度材料 原位自生 显微结构 |
Laser Cladding Ti-FGM of Wearing Properties |
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| Abstract: | By means of laser cladding process a Ti-functionally graded material (FGM) was successfully obtained based on Ti600 with preplaced powder mixtures of Ti, ceramic material and nickel based alloy powder. The wear properties of Ti-FGM presented a graded distribution. It was revealed that with a proper ratio of the mixed powder and laser cladding processing parameters, the Ti-FGM which reinforced by in situ formed TiC particles can be obtained. Light optical microscopy (LOM) and scanning electron microscopy (SEM) were used for analysis of microstructure. The results showed that, a functional graded material was successfully fabricated by laser cladding, TiC particles can be formed by in situ reaction of titanium and ceramic material. The first coating had good metallurgical bonding with the substrate. The coatings were continuous, homogeneous and crack-less with optimizing the technical parameters, and had no borderline. |
| Keywords: | materials titanium alloys laser cladding functionally graded material (FGM) in situ synthesis microstructure |
