Nitriding of Stainless Steelin Ammonia: I Phase Distribution and Microstructure

Surface Engineering - Tập 1 Số 2 - Trang 114-124 - 1985
B. Billon1, A. Hendry2
1Ecole Nationale Supérieur des Arts et Métiers, Lille, France.
2Wolfson Research Group for High Strength Materials, Department of Metallurgy and Engineering Materials, University of Newcastle upon Tyne, Newcastle, Tyne and Wear.

Tóm tắt

The compound layer of iron nitrides (white layer) and the diffusion layer formed during the nitriding of an austenitic stainless steel have been investigated by a combination of optical and electron microscopy and X-ray powder diffraction. The mechanical behaviour of the nitrided surface is controlled by the microstructure, which is shown to be dictated by the nitriding temperature and cooling rate from that temperature. The results provide a complete description of the phase distribution in the nitrided case and indicate the nitriding conditions required to achieve a wide range of properties, from surface hardening to deliberate embrittlement.

Từ khóa


Tài liệu tham khảo

JACK K. H., 1951, Proc. R. Soc, 208, 200

JACK K. H., 1948, Proc. R. Soc, 195, 34

JACK K. H. Acta Crystallogr. 1952, 5, 404.

KUBASCHEWSKI O. and ALCOCK C. B. ‘Metallurgical themm-chemistry’; 1979, London, Pergamon.

LEBRUN J.-P., 1972, Mem. Sci. Rev. Metal!, 69, 727

LIGHTFOOT B. J. and JACK D. H.: in ‘Heat treatment ’73’, 59; 1975, London, The Metals Society.

10.1007/BF00550386

LEHRER E., 1930, Z. Electrochem, 36, 383

10.1016/0026-0800(82)90020-9

BILLON B. and HENDRY A.: in ‘Electron microscopy and analysis 1983’, 367; 1984, London, Institute of Physics.

BILLON B. and HENDRY A. Surf Eng., this issue, 000-000.

PICKERING F. B.: in ‘The metallurgical evolution of stainless steels’, 24; 1979, London, The Metals Society and the American Society for Metals.

10.1179/030634575790444685

IMAI Y., 1967, Sci. Rep. Res. Inst., Tohoku Univ, 19, 83

10.1016/0022-3697(60)90113-X

10.2320/jinstmet1952.33.12_1364

BILLON B., 1983, PhD thesis

PECKNER D. and BERNSTEIN I. M.: in ‘Handbook of stainless steels’; 1977, New York, McGraw-Hill.

BELL T., BIRCH B. J., KOROTCHENKO V., and EVANS S. P.: in ‘Heat treatment ’73’, 51; 1975, London, The Metals Society.

Thông tin
Thông tin xuất bản

Surface Engineering

Tập 1 Số 2

114-124

Thông tin tác giả