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The tendency of spalling of nitrided layer of an austenitic heat resistant steel4Cr14Ni14W2Mo has been studied experimentally.It was found that the residualdeformation retained in the rolled steel is the root that causes the spalling of nitridedlayer of the steel.If the work hardening state is removed by a suitable heat treatment be-fore nitriding,the spalling of nitrided layer can be completely avoided.
The tendency of spalling of nitrided layer of an austenitic heat resistant steel 4Cr14Ni14W2Mo has been studied experimentally .It was found that the residualdeformation retained in the rolled steel is the root that causes the spalling of nitridedlayer of the steel .If the work hardening state is removed by a suitable heat treatment be-fore nitriding, the spalling of nitrided layer can be completely avoided.