The coatings with varied thickness and crack-free can be obtained by multi-layer laser cladding, which will have practical significance for repairing workpieces.
多层熔覆试验能形成厚度可调的无裂纹熔覆层，对生产工件的修复具有实际意义。
The influence of the crystal orientation of the substrate on microstructure is investigated by multi layer laser cladding with the powder of nickel base superalloy.
采用镍基合金粉，研究了激光多层涂覆过程中基材晶体取向对涂层凝固组织的影响规律。
Recent developments and applications of laser surface modification, i. e. laser surface melting, laser surface alloying, laser cladding and laser multi-layer cladding were reviewed in detail.
综述了激光表面改性(激光表面重熔、激光表面合金化、激光表面熔敷、激光多层熔敷)的研究与应用。
The results show that the repair in the finished product of Mg based alloys is feasible by multi layer laser cladding.
结果表明，使用激光多层涂敷的办法修复镁合金成品件是可行的。
The results showed that there were two kinds of defects, porosity and ill bonding in the laser multi-layer cladding.
结果发现，成形件内部存在两种类型的缺陷，即气孔和熔合不良。
The results showed that there were two kinds of defects, porosity and ill bonding in the laser multi-layer cladding.
结果发现，成形件内部存在两种类型的缺陷，即气孔和熔合不良。
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