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。
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。
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