Enhancement of impact toughness of structural steels upon formation of carbide-free bainite

  title={Enhancement of impact toughness of structural steels upon formation of carbide-free bainite},
  author={Andrey Kaletin and Andrii Ryzhkov and Yu. V. Kaletina},
  journal={The Physics of Metals and Metallography},
Mechanical properties of chromium-nickel-molybdenum steels with the carbon contents of 0.1 to 0.4% after slow continuous cooling in the bainitic range have been determined, and the structure has been investigated. It has been shown that, at a carbon content of about 0.10–0.15% and upon additional alloying with silicon and aluminum after such a heat treatment, in steels, the structure of carbide-free bainite is formed and a substantial enhancement in the impact toughness is observed compared to… 
Effect of Low-Temperature Tempering on the Properties of Structural Carbide-Free Bainitic Steels
Mechanical properties of chromium-nickel-molybdenum-silicon steels with carbon contents of 0.18 % and 0.27 % after slow continuous cooling with the cooling rate Vcool = 5 °С/min in the bainitic
The Role of Retained Austenite in the Structure of Carbide-Free Bainite of Construction Steels
The paper discusses the influence of retained austenite formed in a structure after the phase transition in the bainitic temperature range on the properties of structural low-alloy steels. It is
Principles of Design of the Chemical Composition of Steels for Forming a Structure of Lower Carbide-Free Bainite Under Delayed Cooling
Phase and structural transformations in structural steels are studied by the methods of dilatometric analysis and light, scanning and transmission microscopy. Thermokinetic diagrams of decomposition
Mechanical Properties of the 38khs Steel after Isothermal Quenching in the Bainitic Temperature Region
The mechanical properties of the sparingly alloyed 38KhS steel with a carbon content of 0.36 % and a silicon content of 1.14 % after different isothermal quenching regimes in the bainitic temperature
Structure, phase transformations, mechanical characteristics, and cold resistance of low-carbon martensitic steels
Temper-resistant low-carbon Cr–Mn–Ni–Мо–V–Nb steels with concentrations of carbon of 0.15 and 0.27 wt % have been studied. It has been shown that, upon quenching, various morphological types of the α
Formation of Structure and Properties of Carbide-Free Bainite in Steel 30KhGSA
The process of formation of carbide-free bainite, its structure and properties in steel 30KhGSA are studied. The results of a dilatometric analysis are used to determine the temperature and time
The Effect of Primary Ferrite on Bainitic Transformation, Microstructure, and Properties of Low Carbon Bainitic Steel
The effects of primary ferrite on bainitic transformation, microstructure, and properties of low carbon bainitic steel Fe – 0.22C – 2.01Si – 2.20Mn – 0.22Mo are investigated by metallographic and
Structural-Phase Transitions in Cold-Resistant Low-Carbon Martensitic Steels Susceptible to Structural Heredity
An approach proposed to creating steels with a new combination of mechanical properties and a high impact toughness at low temperatures. This approach is based on the phenomenon of structural
Formation of Microstructure and Properties During Isothermal Treatment of Aircraft Building Steel
Features of the microstructure formation in steel 30Cr2MnSiNi2WMo (VL-1) are studied with various heat treatment regimes: stepwise quenching at temperature below M s (quenching and partitioning), and
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The features of microstructure and mechanical properties of the aerospace high strength steel were studied after the implementation of various heat treatment modes: conventional oil quenching and


Mechanical Properties of Low-Temperature Bainite
The mechanical properties of a bainitic microstructure with slender ferrite plates (20-65 nm in thickness) in a matrix of carbon-enriched retained austenite were characterized. The microstructure is
Microstructure – Properties Relationships in Carbide-free Bainitic Steels
We elaborated two carbide-free bainitic steels with different microstructures through specific alloy design and austempering process. Microstructural characterizations were performed by means of EBSD
Very strong bainite
Structure and properties of carbide-free bainite
Effect of thermomechanical isothermal treatment on the structure and properties of structural steels
Mechanical properties and structure of the 35KhGSA and 37KhN3A steels were studied after the so-called isothermal quenching (ISO) which leads to the formation of a bainitic structure and after
Bainite in steels
The mechanism of the bainite transformation in steels is reviewed, beginning with a summary of the early research and finishing with an assessment of the transformation in the context of the other
The Bainite reaction in Fe-Si-C Alloys: The primary stage
The morphology, crystallography, and substructure of bainitic ferrite formed in silicon alloyed high-carbon steels in the temperature range 290 to 380 °C have been studied. The bainite exhibits a
Kaletin, “Structure and properties of structural steels after thermomechanical treatment in the bainitic range of temperatures,
  • Deform. Razrush. Mater.,
  • 2011
Effect of silicon and aluminum on the properties of structural chromium – nickel steels with a bainitic structure
  • Izv . Vyssh . Uchebn . Zaved . , Chern . Metall . , No .
  • 2005
Bhadeshia, “Very strong bainite,
  • Curr. Opin. Solid State Mater.Sci
  • 2004