Influence of carbonitride microalloying on cold brittleness of steel after quenching and tempering
- 1. AN SSSR, Moscow (Russian Federation). Inst. Metallurgii
- 2. AN SSSR, Kol'skij Filial (Russian Federation). Polyarnyj Geofizicheskij Inst.
Description
A study was made into influence of titanium, boron and nitrogen microadditions on mechanical properties and mechanism of ductile-brittle transition in low alloy steel 40KhN. Preliminary annealed test specimens were quenched from 820 or 1100 deg C and then tempered within the temperature range of 200 to 600 deg C for 1 h. Tensile and bend properties, impact strength, the temperature of ductile-brittle transition, stress intensity factor, internal friction and relaxation effect were determined during mechanical testing. The analysis of test results allowed to conclude that steel microalloying increases the resistance to brittle fracture by lowering the tendency to formation of local microstresses in metal under loading. 13 refs., 4 figs., 1 tab
Additional details
Additional titles
- Original title (Russian)
- Механизм влияния карбонитридного микролегирования на хладноломкость стали после закалки и отпуска
Publishing Information
- Journal Title
- Fizika Metallov i Metallovedenie
- Journal Volume
- 81
- Journal Issue
- 2
- Journal Page Range
- p. 87-93.
- ISSN
- 0015-3230
- CODEN
- FMMEA9
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 28048608
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BORON ADDITIONS; BRITTLENESS; DUCTILE-BRITTLE TRANSITIONS; INTERNAL FRICTION; NITROGEN ADDITIONS; QUENCHING; STEEL-NICR; STRESS INTENSITY FACTORS; STRESSES; TEMPERING; TITANIUM ADDITIONS
- Descriptors DEC
- ALLOYS; CARBON ADDITIONS; CHROMIUM ADDITIONS; COPPER ADDITIONS; FRICTION; HEAT TREATMENTS; IRON ALLOYS; IRON BASE ALLOYS; LOW ALLOY STEELS; MECHANICAL PROPERTIES; NICKEL ALLOYS; STEELS; TRANSITION ELEMENT ALLOYS