TC4合金表面激光熔覆B4C及B4C+Ti粉末涂层的微观组织
TC4합금표면격광용복B4C급B4C+Ti분말도층적미관조직
Microstructure of Laser Cladding Coating with Pre-Placed B4C and B4C+Ti Powders on TC4 Substrate
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