Influence of severe plastic deformation by the ECAP method on structure and properties of the P2-04BCh steel

Purpose: Maim aim of this paper is to describe the plastic deformation executed by ECAE of low carbon steel. The ECAE method lead to significant improvement of strength of investigated material. Design/methodology/approach: Experiments were planned and realised an the temperature ranging from room temperature up 280oC. After application of deformation the structure was investigated in dependence on accumulation of deformation and deformation temperature as well as abovementioned final properties. Findings: Accumulated deformation varied from the value 2 to 8. Investigation of structure by electron microscopy was made with use microscope JEOL JEM 2100. Mechanical properties were investigated by tensile test. Statistic evaluation of angular disorientation and of size of grains/sub-grains was also made with use of electron diffraction (EBSD) in combination with scanning electron microscope FEG SEM Philips. Practical implications: The technology ECAE was applied on low carbon steel. It was verification of ECAE application possibility on steel P2-04BCH importantly for following applying on similar kinds of steel, because ECAE deformation influence. Originality/value: The results from his work shall be useful in determining conditions for fabrication of

[1]  S. Dobatkin,et al.  Low Carbon Steel Processed by Equal Channel Angular Warm Pressing , 2006 .

[2]  R. Valiev.  Some New Trends in SPD Processing for Fabrication of Bulk Nanostructured Materials , 2006 .

[3]  R. Valiev,et al.  Bulk nanostructured materials from severe plastic deformation , 2000 .

[4]  T. Langdon,et al.  Principle of equal-channel angular pressing for the processing of ultra-fine grained materials , 1996 .

[5]  M. Greger,et al.  INFLUENCE OF SEVERE PLASTIC DEFORMATION ON STRUCTURE AND PROPERTIES OF THE STEEL WAC 1008 , 2008 .

[6]  M. Opiela,et al.  Diagrams of supercooled austenite transformations of low-carbon and medium-carbon TRIP-steels , 2008 .

[7]  S. Lesz,et al.  Correlation between fracture morphology and mechanical properties of NANOPERM alloys , 2008 .

[8]  J. Herian,et al.  Quantitative evaluation of the structure and properties of hot rolled products of continuous ingots made of low-carbon steels , 2008 .

[9]  K. Radwański,et al.  The influence of hot-working processing on plasticity and structure of duplex steel , 2007 .

[10]  J. Adamczyk,et al.  Heat treatment and mechanical properties of low-carbon steel with dual-phase microstructure , 2007 .

[11]  W. Sitek.  Employment of rough data for modelling of materials properties , 2007 .

[12]  K. Kurzydłowski.  Microstructural refinement and properties of metals processed by severe plastic deformation , 2004 .

[13]  William D. Callister,et al.  Materials Science and Engineering: An Introduction , 1985 .

[14]  N. Hansen,et al.  Deformation of polycrystals: mechanisms and microstructures : proceedings 2nd Risø International Symposium on Metallurgy andMaterials Science, September 14-18 1981 , 1981 .