Investigation of Steel 09G2S Processed by Equal Channel Angular Pressing

Maria Z. Borisova; Sofia Yakovleva; Susanna N. Makharova

doi:10.4028/www.scientific.net/AMR.1127.61

Paper Titles

A New Approach to Determining the Bending Moment in Tube Forming
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Forming and Microstructure Development of AHS Steels by Temperatures under A_C3
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Forming a Structured Surface of a New Type of Solar Absorber with Hydroforming
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Mathematical Models of Ultra-Fine Grained Materials Based on Dissipation Normal Form
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Investigation of Steel 09G2S Processed by Equal Channel Angular Pressing
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In Situ Testing and Heterogeneity of UFG Cu at Elevated Temperatures
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Aluminium Alloys Measurement in Quenching Dilatometer and Application of the Data
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Effect of Precipitation Aging Conditions on Microstructural Refurbishment in Cast Nickel Base Superalloy GTD-111
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Optimization of Microstructure of the Low Alloy Structural Steel Using Rare Earth Metal (REM) Addition
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Investigation of Steel 09G2S Processed by Equal Channel Angular Pressing

Abstract:

Severe plastic deformation is a well known procedure for fabrication considerable grain refinement in metal materials. Equal channel angular pressing (ECAP) is one of these severe plastic deformation techniques which allows the receiving of the bulk ultrafine grained (UFG) metals. It is well known that the ECAP method leads to significant improvement of strength of investigated materials, but the fracture mechanisms of UFG metals at low temperature are not enough studied. The investigation was performed on low-alloy constructional steel 09G2S (GOST) after application of ECAP. Fracture toughness tests were performed on Charpy impact testing specimens at low temperature. The experiments demonstrate that ECAP treatment has the effect on increasing of fracture resistance of steel 09G2S at low temperature.