Acta Metallurgica Sinica (English Letters) ›› 1990, Vol. 3 ›› Issue (11): 341-344.

• Research paper • Previous Articles     Next Articles

SAM ANALYSIS OF NITRIDE IN 30CrNi STEEL

QI Yunxin Nei Monggol Institute of Metallic Materials,Baotou,China QI Yunxin,Professor,P.O.Box No.4,Baotou 014034,Nei Monggol,China   

  • Received:1990-11-11 Revised:1990-11-11 Online:1990-11-11 Published:2009-10-10

Abstract: The nitride in 30CrNi steel and its composition along boundaries have been studied by means of scanning Auger microprobe.The nitride identified metallographically is Zr(C,N)which contains a small amount of Ti and O.The interface width between the Zr(C,N)and the matrix is about 1.6 μm.An Fe-rich shell is.found on the surface of Zr(C,N)which appeared on the fracture surface.The thickness of shell is 0.1-0.8μm.The Fe concentration of its outmost layer is 3-18 at.-% and decreases exponentially along the depth direction.

Key words: nitride, SAM analysis, CrNi steel, Fe-rich shell, fracture surface