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Microstructures and surface performance of laser melting deposited composites on a Ti alloy

机译：钛合金上激光熔敷沉积复合材料的微观结构和表面性能

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This work is based on the dry sliding wear and cyclic oxidation of composites deposited on a TA1 substrate using laser melting deposition (LMD) technique, the parameters of which are such as to provide almost crack-free composites with minimum dilution and very low porosity. To our knowledge, it is the first time that Stellite SF12-Al-FeSi-B_(4)C mixed powders are deposited as hard composites by LMD technique. Scanning electron microscopy results indicate that such composites with metallurgical joint to a TA1 substrate were formed. It is noted that many nanocrystalline/amorphous phases are also produced, which improve the surface performance of such composites. Compared with the TA1 substrate, improvement of cyclic oxidation and wear resistance are obtained for such composites.
机译：这项工作基于使用激光熔融沉积（LMD）技术沉积在TA1基材上的复合材料的干式滑动磨损和循环氧化，其参数可以提供几乎无裂纹的复合材料，并具有最小的稀释度和非常低的孔隙率。据我们所知，这是第一次通过LMD技术将Stellite SF12-Al-FeSi-B_（4）C混合粉末沉积为硬质复合材料。扫描电子显微镜结果表明，形成了具有冶金结合至TA1基底的这种复合材料。注意，还产生了许多纳米晶/非晶相，其改善了这种复合材料的表面性能。与TA1基材相比，此类复合材料的循环氧化性能和耐磨性得到了改善。

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