Formation of nitrided layers on duplex steel - influence of multiphase substrate

被引：14

作者：

Bielawski, J. ^{[1
]}

Baranowska, J. ^{[1
]}

机构：

[1] W Pomeranian Univ Technol, Inst Mat Sci & Engn, PL-70310 Szczecin, Poland

来源：

SURFACE ENGINEERING | 2010年 / 26卷 / 04期

关键词：

Duplex steel; Low temperature nitriding; Expanded martensite; S phase; MARTENSITIC STAINLESS-STEEL; MICROSTRUCTURE; CORROSION;

D O I：

10.1179/026708410X12593178265904

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The present paper reports the results of gas nitriding of duplex stainless steel and study of the effect of substrate structure on the nitrided layers. The differences in the growth of the layers on austenitic and ferritic substrate were studied. The microstructure and phase composition of the layers were investigated using light microscopy analysis), X-ray diffraction (XRD and grazing angle XRD - GXRD) and electron microprobe spectrometry. Moreover, the microhardness of the layers was studied. A particular role of steel substrate in layer formation was observed at a low temperature (below 500 degrees C) nitriding. The layers were mostly composed of the S phase and expanded martensite formed on austenite and ferrite grains respectively. The substrate influence was of minor importance at treatment temperature higher than 500 degrees C.

引用

页码：299 / 304

页数：6

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