METAL-CERAMIC FUNCTIONALLY GRADIENT MATERIAL PRODUCED BY LASER PROCESSING
METAL-CERAMIC FUNCTIONALLY GRADIENT MATERIAL PRODUCED BY LASER PROCESSING
复制标题
DOI：
10.1007/bf00356225
复制
发表时间：
1993-05-15
影响因子：
4.5
通讯作者：
WEST, DRF
中科院分区：
文献类型：
--
作者：
JASIM, KM;RAWLINGS, RD;WEST, DRF
采用激光合金化、熔覆和注射成形相结合的金属+陶瓷混合粉末注射成形技术，研究了用连续波CO_2激光器制备梯度功能材料的可行性。用2kW CO2激光器在镍合金基体上分别用Al-10wt%SiC、Al-30wt%SiC和Al-50wt%SiC粉末混合物制备了单一合金/熔覆轨迹和三条完全重叠的熔覆轨迹。研究了加工横移速度和送粉速度对被加工材料成分和组织随位置的变化规律。
A technique of injection with a powder feed of a mixture of metal + ceramic which combines the processes of laser alloying, cladding and injection, has been applied to study the feasibility of using a continuous wave CO2 laser to produce a functionally gradient material. A 2 kW CO2 laser has been used to produce, on a nickel alloy substrate, single alloy/clad tracks and three totally overlapping clad tracks using powder mixtures of Al-10 wt% SiC, Al-30 wt% SiC and Al-50 wt% SiC, respectively. The variation of composition and structure with position in the processed material has been investigated with reference to the effect of processing traverse speed and the powder feed rate.