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Effect of smelting method on the austenite grain size and properties of heat-resisting pearlitic steel

Journal Article:

Abstract

Influence of smelting method on austenite grain size and properties of refractory perlite steel were studied. An opportunity was found to increase the steel refractoriness without deteriorating its other properties. The steel 12Kh1MF of electric or common open-hearth smelting was used. The dependence of kinetics of austenite grain growth on the smelting method was studied in the temperature range 950 deg - 1200 deg C with 1 hour exposure. The grain size of austenite in steel is supposedly determined by aluminium nitrides and vanadium carbides. In tests of normalized (kept for 20 minutes at 950-980 deg C) and tempered (kept for 3 hours at 730 deg C) transverse (tangential) pipe cross-section samples the electric steel had higher impact viscosity than the open-hearth metal. At working temperatures (540 deg -580 deg C) the difference in viscosity has its minimum. Viscosity of both steels 12Kh1MF begins to sharply decrease from 20 deg C. However, electric steel has rather high viscosity even at /sup -/40 deg C, while the open-hearth one becomes brittle as early as at /sup -/20 deg C. Long-term strength tests at 580 deg C under stresses 10-14 kG/mm/sup 2/ show that the coarse-grain steel is more refractory, i.e. time  More>>
Authors:
Balakhovskaya, M B; Khusainova, N A; Davlyatova, L N [1] 
  1. Vsesoyuznyj Nauchno-Issledovatel'skij Teplotekhnicheskij Inst., Moscow (USSR)
Publication Date:
Dec 01, 1975
Product Type:
Journal Article
Reference Number:
AIX-08-342941; EDB-78-037999
Resource Relation:
Journal Name: Stal; (USSR); Journal Volume: 12
Subject:
36 MATERIALS SCIENCE; CHROMIUM-MOLYBDENUM STEELS; GRAIN SIZE; SMELTING; ALUMINIUM NITRIDES; AUSTENITE; GRAIN GROWTH; HEAT RESISTING ALLOYS; HIGH TEMPERATURE; IMPACT STRENGTH; LOW TEMPERATURE; MEDIUM TEMPERATURE; TIME DEPENDENCE; VANADIUM CARBIDES; VERY HIGH TEMPERATURE; ALLOYS; ALUMINIUM COMPOUNDS; CARBIDES; CARBON ADDITIONS; CARBON COMPOUNDS; CHROMIUM ALLOYS; CHROMIUM STEELS; CRYSTAL STRUCTURE; IRON ALLOYS; IRON BASE ALLOYS; MECHANICAL PROPERTIES; MICROSTRUCTURE; NITRIDES; NITROGEN COMPOUNDS; PNICTIDES; SIZE; STEELS; TRANSITION ELEMENT COMPOUNDS; VANADIUM COMPOUNDS; 360101* - Metals & Alloys- Preparation & Fabrication; 360102 - Metals & Alloys- Structure & Phase Studies
OSTI ID:
5245070
Country of Origin:
USSR
Language:
Russian
Other Identifying Numbers:
Journal ID: CODEN: STALA
Submitting Site:
INIS
Size:
Pages: 1129-1131
Announcement Date:

Journal Article:

Citation Formats

Balakhovskaya, M B, Khusainova, N A, and Davlyatova, L N. Effect of smelting method on the austenite grain size and properties of heat-resisting pearlitic steel. USSR: N. p., 1975. Web.
Balakhovskaya, M B, Khusainova, N A, & Davlyatova, L N. Effect of smelting method on the austenite grain size and properties of heat-resisting pearlitic steel. USSR.
Balakhovskaya, M B, Khusainova, N A, and Davlyatova, L N. 1975. "Effect of smelting method on the austenite grain size and properties of heat-resisting pearlitic steel." USSR.
@misc{etde_5245070,
title = {Effect of smelting method on the austenite grain size and properties of heat-resisting pearlitic steel}
author = {Balakhovskaya, M B, Khusainova, N A, and Davlyatova, L N}
abstractNote = {Influence of smelting method on austenite grain size and properties of refractory perlite steel were studied. An opportunity was found to increase the steel refractoriness without deteriorating its other properties. The steel 12Kh1MF of electric or common open-hearth smelting was used. The dependence of kinetics of austenite grain growth on the smelting method was studied in the temperature range 950 deg - 1200 deg C with 1 hour exposure. The grain size of austenite in steel is supposedly determined by aluminium nitrides and vanadium carbides. In tests of normalized (kept for 20 minutes at 950-980 deg C) and tempered (kept for 3 hours at 730 deg C) transverse (tangential) pipe cross-section samples the electric steel had higher impact viscosity than the open-hearth metal. At working temperatures (540 deg -580 deg C) the difference in viscosity has its minimum. Viscosity of both steels 12Kh1MF begins to sharply decrease from 20 deg C. However, electric steel has rather high viscosity even at /sup -/40 deg C, while the open-hearth one becomes brittle as early as at /sup -/20 deg C. Long-term strength tests at 580 deg C under stresses 10-14 kG/mm/sup 2/ show that the coarse-grain steel is more refractory, i.e. time till fracture of open-hearth steel samples is twice as long as that of electric steel samples.}
journal = {Stal; (USSR)}
volume = {12}
journal type = {AC}
place = {USSR}
year = {1975}
month = {Dec}
}