AN INVESTIGATION OF DEFECTS IN THE NICKEL-BASED SUPERALLOY IN738LC FABRICATED BY LASER POWDER BED FUSION

In recent years, additive manufacturing has been widely concerned by people, is also a new type of nickel base superalloy parts manufacturing process, but because of the complexity of the process, is formed by this way of nickel base superalloy parts have a lot of defects, this paper discusses the formation mechanism and control methods of these defects.

近年来，增材制造广泛受到人们的关注，也是一种新型镍基高温合金零部件制造的工艺，但是由于过程的复杂性，是的由该种方式成形的镍基高温合金的零部件有很多的缺陷，本分讨论的这些缺陷的生成机理以及控制方法。