Effect of residual austenite on the mechanical properties of carburized steels

Journal Article · Sun May 01 04:00:00 EDT 1988 · Met. Sci. Heat Treat. Met. (Engl. Transl.); (United States)

OSTI ID:5933287

Zinchenko, V M; Georgievskaya, B V; Olovyanishnikov, V A

The effect of residual austenite on the mechanical properties of carburized steels was investigated by controlling residual austenite content during the specimen preparation stage and then conducting metallographic, layer-by-layer chemical and phase chemical, and x-ray analysis on carburized specimens of 25KhGT, 25KhGM, and 20KhN2M steels. Bending resistance, impact strength, and fatigue limit were also determined. Bench tests were also carried out on gear wheels. A directly proportional relationship was found between the carbon content in solid solution and residual austenite. An extreme relationship was established between the mechanical properties of the steels and residual austenite content in the surface layers with the attainment of maximum properties at content values of 35 to 50% for residual austenite.

• OSTI ID: 5933287
• Journal Information: Met. Sci. Heat Treat. Met. (Engl. Transl.); (United States), Journal Name: Met. Sci. Heat Treat. Met. (Engl. Transl.); (United States) Vol. 29:12; ISSN MHTRA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
AUSTENITE
CARBIDES
CARBON
CARBON ADDITIONS
CARBON COMPOUNDS
CARBURIZATION
CHROMIUM ALLOYS
CHROMIUM STEELS
COHERENT SCATTERING
DIFFRACTION
DISPERSIONS
ELEMENTS
FATIGUE
FLEXURAL STRENGTH
HARDENING
HIGH ALLOY STEELS
IMPACT STRENGTH
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
METALLOGRAPHY
METALLURGICAL EFFECTS
MIXTURES
MOLYBDENUM ADDITIONS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL STEELS
NONMETALS
PHASE STUDIES
QUANTITY RATIO
SCATTERING
SOLID SOLUTIONS
SOLUTIONS
STAINLESS STEELS
STEELS
STRUCTURAL CHEMICAL ANALYSIS
SURFACE HARDENING
SURFACE TREATMENTS
TENSILE PROPERTIES
X-RAY DIFFRACTION