Nonmagnetic heating-resistant stainless steel for roller bearings

被引:10
作者
Riedner, S. [1 ]
Berns, H. [1 ]
Tyshchenko, A. I. [2 ]
Gavriljuk, V. G. [2 ]
Schulte-Noelle, C. [3 ]
Trojahn, W. [3 ]
机构
[1] Ruhr Univ Bochum IA 2 142, Lehrstuhl Werkstofftech, D-44780 Bochum, Germany
[2] Ukrainian Acad Sci, Inst Met Phys, Kiev, Ukraine
[3] Schaeffler Grp, Schweinfurt, Germany
关键词
austenitic steel; ball bearings; heating resistant; high hardness; stainless; non magnetic;
D O I
10.1002/mawe.200800272
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A low cost austenitic chromium manganese steel with about 1 mass% of carbon and nitrogen was molten under normal pressure which reveals an amazing combination of proper-ties. Starting from a yield strength of about 600 MPa it is cold work hardened to 60 HRC. This high hardness is brought about for the first time without a martensitic microstructure which is usual for roller bearings. In addition this steel is stainless, non-magnetic and heating resistant up to about 500 degrees C, i.e. a material to serve under complex loading. Manufacturing by ingot metallurgy, ESR, hot working, solution annealing and machining was carried out on an industrial scale. The investigation of the structure was carried out on several scales, beginning with the electronic structure, the TEM structure, the light optical microscopy up to macro-etchings. In this manner an extensive understanding of the outstanding combination of properties of the steel named CARNIT was derived.
引用
收藏
页码:448 / 454
页数:7
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