Gas Nitriding and Hydrogen embrittlement
Gas Nitriding and Hydrogen embrittlement
(OP)
Gas nitriding is performed in an atmosphere of Ammonia and dissociated ammonia (Hydrogen and Nitrogen) at high temperature (500-555 deg C).Is Hydgrogen embrittlement a problem during nitriding.If not why?
Some references will be appreciated.
Some references will be appreciated.





RE: Gas Nitriding and Hydrogen embrittlement
RE: Gas Nitriding and Hydrogen embrittlement
Michael McGuire
http://stainlesssteelforengineers.blogspot.com/
RE: Gas Nitriding and Hydrogen embrittlement
RE: Gas Nitriding and Hydrogen embrittlement
I always presumed that you could get away with BA on low alloy ferritic alloys because the hydrogen diffusion rates were so fast that they would reach zero hydrogen during natural cooling.
High alloy ferritics have enough alloy additions to restrict hydrogen diffusion and it makes these alloys problematic. If we BA a ferritic or duplex we will not cold draw for at least 48 hours.
For any austenitic alloy (17-7 and Custom 465 included) we will cold draw the same afternoon as annealing.
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