Discussion of "Investigation of Oxide Bifilms in Investment Cast Superalloy IN100 Parts I and II"*

作者：Campbell John^*

来源：Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science, 2017, 48A(10): 5151-5153.

DOI：10.1007/s11661-017-4223-6

Fuchs and Kaplan carried out experiments in an attempt to ascertain whether oxide bifilms were present in a vacuum-cast Ni-base superalloy but concluded negatively. Although this author challenged their interpretation of their findings, both parties had overlooked the presence in the alloy of boron which is now known to inhibit bifilm formation. However, even though boron can help significantly, improved filling system designs remain important if other damaging entrainment defects are to be avoided.

• 出版日期2017-10