SAM ANALYSIS OF NITRIDE IN 30CrNi STEEL

Acta Metall Sin

1990, Vol. 26

Issue (2): 132-135 DOI:

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SAM ANALYSIS OF NITRIDE IN 30CrNi STEEL

QI Yunxin Nei Monggol Institute of Metallic Materials; Baotou P.O. Box No.4; Baotou; Nei Monggol

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QI Yunxin Nei Monggol Institute of Metallic Materials; Baotou P.O. Box No.4; Baotou; Nei Monggol. SAM ANALYSIS OF NITRIDE IN 30CrNi STEEL. Acta Metall Sin, 1990, 26(2): 132-135.

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Abstract The nitride in 30CrNi steel and its composition along boundaries havebeen studied by means of scanning Auger microprobe. The nitride inclusion was id-entified metallographically as Zr(C,N) containing a small amounts of Ti and O.The interfacial boundary width between the Zr(C,N) and the matrix is about 1.6μm.An Fe-rich shell is found on the fracture surface at which the Zr(C,N) appeared.The thickness of the shell is 0.1-0.8μm. The Fe concentration of its outmost layeris 3-18 at. -%, and decreases exponeatially along the depth direction.

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

Received: 18 February 1990

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1 李日升.材料科学进展,北京:科学出版社,1986:414
2 Davis L E, MacDonald N C, Palmberg P W, Riach G E, Weber R E. Handbook of Auger Electron Spectroscopy, 2nd ed., Minnesota: Physical Electronics Industries Inc., 1976: 5

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