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Title: Features of brittle damages and hydrogen impregnation of high-pressure boiler tube metal

Abstract

A significant number of failures encountered in high-pressure steam boilers of thermal electric power stations are caused by damage of the tubes of the steam superheaters, which are made of 20, 12Kh1MF, 12Kh2MFSR and 12Kh18N10T steels. A statistical analysis made by the authors determined that a large number of the failures result from the action of hydrogen on the tubes. In this paper, the mechanisms of hydrogen diffusion, corrosion crack propagation, and brittle failure for steam superheater tubes were analyzed. Hydrogen-related intergranular cracking and thermal fatigue were assessed for the tube steels. It was concluded that hydrogen had a significant effect on processes of crack origin and propagation both in the superheater and in the unheated tubes of the boilers.

Authors:
; ; ; ; ;
Publication Date:
OSTI Identifier:
6115669
Resource Type:
Journal Article
Journal Name:
Sov. Mater. Sci. (Engl. Transl.); (United States)
Additional Journal Information:
Journal Volume: 23:4; Other Information: Translated from Fiz.-Khim. Mekh. Mater.; 23: No. 4, 83-86(Jul-Aug 1987)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; STEAM LINES; DAMAGE; STEELS; HYDROGEN EMBRITTLEMENT; SUPERHEATERS; BRITTLENESS; CHROMIUM STEELS; CHROMIUM-NICKEL STEELS; CORROSION FATIGUE; CORROSIVE EFFECTS; CRACK PROPAGATION; FAILURE MODE ANALYSIS; FRACTURE PROPERTIES; FRACTURES; HYDROGEN; INTERGRANULAR CORROSION; STEAM GENERATORS; STEEL-12KH1MF; THERMAL FATIGUE; THERMAL POWER PLANTS; ALLOYS; BOILERS; CHEMICAL REACTIONS; CHROMIUM ALLOYS; CORROSION; ELEMENTS; EMBRITTLEMENT; FAILURES; FATIGUE; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; MANGANESE ADDITIONS; MANGANESE ALLOYS; MECHANICAL PROPERTIES; MOLYBDENUM ADDITIONS; MOLYBDENUM ALLOYS; NICKEL ALLOYS; NONMETALS; POWER PLANTS; SILICON ADDITIONS; SILICON ALLOYS; STAINLESS STEELS; SYSTEM FAILURE ANALYSIS; SYSTEMS ANALYSIS; VANADIUM ADDITIONS; VANADIUM ALLOYS; VAPOR GENERATORS; 360105* - Metals & Alloys- Corrosion & Erosion

Citation Formats

Vainman, A.B., Smiyan, O.D., Girnyi, S.I., Kostyuchenko, N.P., Vasilik, A.V., and Melekhov, R.K. Features of brittle damages and hydrogen impregnation of high-pressure boiler tube metal. United States: N. p., 1988. Web. doi:10.1007/BF00723320.
Vainman, A.B., Smiyan, O.D., Girnyi, S.I., Kostyuchenko, N.P., Vasilik, A.V., & Melekhov, R.K. Features of brittle damages and hydrogen impregnation of high-pressure boiler tube metal. United States. doi:10.1007/BF00723320.
Vainman, A.B., Smiyan, O.D., Girnyi, S.I., Kostyuchenko, N.P., Vasilik, A.V., and Melekhov, R.K. Fri . "Features of brittle damages and hydrogen impregnation of high-pressure boiler tube metal". United States. doi:10.1007/BF00723320.
@article{osti_6115669,
title = {Features of brittle damages and hydrogen impregnation of high-pressure boiler tube metal},
author = {Vainman, A.B. and Smiyan, O.D. and Girnyi, S.I. and Kostyuchenko, N.P. and Vasilik, A.V. and Melekhov, R.K.},
abstractNote = {A significant number of failures encountered in high-pressure steam boilers of thermal electric power stations are caused by damage of the tubes of the steam superheaters, which are made of 20, 12Kh1MF, 12Kh2MFSR and 12Kh18N10T steels. A statistical analysis made by the authors determined that a large number of the failures result from the action of hydrogen on the tubes. In this paper, the mechanisms of hydrogen diffusion, corrosion crack propagation, and brittle failure for steam superheater tubes were analyzed. Hydrogen-related intergranular cracking and thermal fatigue were assessed for the tube steels. It was concluded that hydrogen had a significant effect on processes of crack origin and propagation both in the superheater and in the unheated tubes of the boilers.},
doi = {10.1007/BF00723320},
journal = {Sov. Mater. Sci. (Engl. Transl.); (United States)},
number = ,
volume = 23:4,
place = {United States},
year = {1988},
month = {1}
}