HIGH-PRESSURE NITROGEN GAS ALLOYING OF FE-CR-NI ALLOYS .1. NITRIDE COMPOSITION AND NITROGEN CONCENTRATION

被引：11

作者：

RAWERS, J

PETTY, AV

机构：

[1] Albany Research Center, US Bureau of Mines, Albany, OR

来源：

JOURNAL OF MATERIALS SCIENCE | 1993年 / 28卷 / 13期

关键词：

D O I：

10.1007/BF01159827

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The concentration of nitrogen in molten Fe-Cr-Ni alloys has been substantially increased by melting under nitrogen overpressures. Total nitrogen concentrations exceeding 26 at % were obtained when melted under 200 MPa. Nitrogen is present in solidified alloys as interstitial nitrogen and as metal nitrides. The nitrogen concentration depends upon the alloy composition; nickel decreases the nitrogen concentration, whereas chromium increases the concentration. When iron and Fe-Ni alloys were melted under high nitrogen pressures they produced iron nitrides and when Fe-Cr-Ni alloys were melted they produced CrN dendrites and precipitates.

引用

页码：3489 / 3495

页数：7

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