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Prediction of Continuous Cooling Diagrams for the Precision Forged Tempering Steel 50CrMo4 by Means of Artificial Neural Networks
Continuous Cooling Diagrams Precision Forged Tempering Steel 50CrMo4 Artificial Neural Networks
2009/9/2
Quenching and tempering of precision forged components using their forging heat leads to reduced process energy and shortens the usual process chains. To design such a process, neither the isothermal ...
Precipitation kinetics in austenitic 18Cr-30Ni-Nb cast steel
Keywords: Ni-Cr cast steel Precipitation Niobium carbide G phase
2011/3/17
The study presents the results of investigations on the precipitation kinetics in austenitic 18%Cr-30%Ni cast steel stabilised with an addition of 1.84 wt% niobium.
Influence of coolant motion on structure of hardened steel element
Heat Treatment Phase Transformations Natural Convection Finite Element Method
2011/3/17
Presented paper is focused on volumetric hardening process using liquid low melting point metal as a coolant. Effect of convective motion of the coolant on material structure after hardening is invest...
The characteristics of two-phase 22Cr-6Ni-2Mo-1,5Cu cast steel
Stainless cast steel Cr-Ni Microstructures Distribution coefficient Mechanical properties
2011/3/17
The paper discusses the effect of the casting wall thickness on the segregation of alloying elements in two-phase (F-A) 22Cr-6Ni-2Mo-1,5Cu cast steel. The values of the distribution coefficient k0 for...
Exploitation of rare earth metals in cast steel production for power engineering
REM (rare earth metals) Modification Cast carbon steel Austenitic cast steel
2011/3/17
The paper presents results of experiments carried out on industrial melts. There has been tested the REM influence on carbon properties (0.20%C) as well as austenitic cast steel Cr-Ni 18/8+Ti type.
Significance of the sigma phase for the erosive wear process of the duplex cast steel
Innovative Foundry Technologies and Materials Duplex cast steel
2011/3/15
The work presents a possibility of increasing the tribological properties of the ferritic-austenitic cast steel (the so called duplex cast steel)of GX2CrNiMoCu25-6-3-3 grade by taking an advantage of ...
Austenite steel transformations under the influence of fatigue loading
Mechanical properties Fatigue Non-proportional loading Martensite Hardness
2011/3/15
Behavior of materials and structures in fatigue non-proportional loading conditions, characterized by the principal axes rotation during fatigue cycles, is an important issue because of its impact on ...
The microstructure of HS 6-5-2 steel in the areas overlapping remelting obtained by the use of GTAW method
Heat treatment Metallography GTAW method Directional crystallizatio
2011/3/15
The work presents microstructures of HS 6-5-2 high-speed steel from the areas overlapping remelting. The surface layer of the steel was remelted using the GTAW method. The microstructure photos were t...
Microhardness changes of surface layer of HS 6-5-2 steel in the areas overlapping remelting obtained with the use of GTAW method
Heat treatment Metallography GTAW method Directional crystallization
2011/3/15
The work presents test results of microhardness of surface layer of HS 6-5-2 high-speed steel from areas overlapping remelting. The surface layer of the steel was remelted using the GTAW method. The m...
The remelting of the surface layer of C15 steel with an electric arc
Steel Remelting Martensite Surface layer GTAW method
2011/3/15
This study presents results of a research on enhancing properties of the surface layer of C15 steel by treating it with a concentrated heat stream utilizing the GTAW method.
Creep-resistant austenitic cast steel
Austenitic cast steel Phase composition Precipitation process
2011/3/15
The study reviews the reference literature and gives some results of own investigations concerning changes of phase composition that take place in creep-resistant austenitic cast steel of two generati...
The thermal fatigue behaviour of creep-resistant Ni-Cr cast steel
Heat treatment Cast steel Ni-Cr Thermal fatigue Microstresses Trays and fixtures
2011/3/11
The study gives a summary of the results of industrial and laboratory investigations regarding an assessment of the thermal fatigue behaviour of creep-resistant austenitic cast steel. The first part o...
Numerical prediction of the hardening stresses in at elements of steel C80U
Quenching Stresses/Strains Numerical modelling
2011/3/11
The paper presents numerical model of thermal phenomena, phase transformation and mechanical phenomena associated with hardening of carbon steel C80U. The stresses generated during hardening were assu...
Microstructure of Remelted Zone of HS 6-5-2 High Speed Steel
Heat treatment – metallography Directional crystallization Volumetric crystallization
2011/3/11
The work presents microstructures of the remelted zone of HS 6-5-2 high-speed steel. Zones of this kind can be created as a result of treating the material with a CO2 laser beam. The laser processing ...
Optimization of Heat Treatment in Aspect of Production's Costs Reducing and Improving of Casting Quality from Duplex Cast Steel
Heat treatment Duplex cast steel Mechanical properties Ferrite - δ
2011/3/11
The paper determines possibilities of cost optimisation in the production of GX2CrNiMoCu25-6-3-3 type duplex cast steel castings through selection of appropriate solution heat treatment temperature, w...