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Structure and composition of expanded austenite produced by nitrogen plasma immersion ion implantation of stainless steels X6CrNiTi1810 and X2CrNiMoN2253

被引：109
作者：
Blawert, C
Mordike, BL
Jirásková, Y
Schneeweiss, O
机构：
[1] Tech Univ Clausthal, Inst Werkstoffkunde & Werkstofftech, D-38678 Clausthal Zellerfeld, Germany
[2] Acad Sci Czech Republic, Inst Phys Met, CS-61662 Brno, Czech Republic
来源：
SURFACE & COATINGS TECHNOLOGY | 1999年 / 116卷
关键词：
austenitic stainless steel; duplex stainless steel; expanded austenite; plasma immersion ion implantation; structure;
D O I：
10.1016/S0257-8972(99)00086-9
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The structure and phase composition of the modified surface of two different stainless steels (austenitic steel X6CrNiTi1810 and austenitic-ferritic steel X2CrNiMoN2253) after 3 h plasma immersion ion implantation of nitrogen at 400 degrees C were compared using XRD, SEM, TEM and Mossbauer spectroscopy. Both steels show a surface layer with very similar composition. The major phase found is expanded austenite. Very fine precipitates in the near surface region are most likely decomposition products (ferrite/martensite and CrN) of the metastable expanded austenite. The stability of the expanded austenite in the austenitic-ferritic steel is lower and the amount of decomposition products is higher under the same treatment conditions. (C) 1999 Elsevier Science S.A. All rights reserved.
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页码：189 / 198
页数：10
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