Record number :
Title of article :
Microstructures and mechanical properties evaluation of hard chromized austenitic Fe–Mn–Al alloys
Author/Authors :
Jyh-Wei Lee*، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
From page :
To page :
Abstract :
Engineering components with hard coatings usually exhibit improved service behavior and increased lifetime. Hard chromizing technique is employed to deposit chromiumnitride and carbides layer on the surface of an austenitic Fe–30.6Mn–6.8Al–0.9C alloy. The (Cr, Fe)2N1 x and (Cr, Fe)23C6 phases are found on the chromized surface, while the internal part of chromized layer is (Cr, Fe)7C3 phase. The thickness of the chromized layer obeys the parabolic rate law. For the specimen chromized at 1000 8C for 4 h, the hardness of the coating is 19.6 GPa.Amixed cohesive–adhesive failure and an adhesion strength quality related to HF2 are observed on the coating. The wear resistance of the chromized layer is also improved at least three times better than the substrate
Keywords :
Hard chromizing , Fe–Mn–Al alloys , Scratch test , Wear test , Chromium carbide
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science
Serial Year :
Link To Document :