Formation of new Phases and Local High Temperatures in Nanoscaled Areals During Cyclic Fracture of Steel
| Authors | L.A. Gorbachov1, A.D. Pogrebnjak2,3 О.S. Kuzema4 |
| Affiliations | 1 East-Kazahkstan State Technical University, 69, A.K. Protazanov Str., 070004, Ust-Kamenogorsk City, The republic of Kazakhstan 2 Sumy State University, 2, Rimsky-Korsakov Str., 40007 Sumy, Ukraine 3 Ukraine Sumy Institute for Surface Modification, P.O. Box 163, 40030 Sumy, Ukraine 4 Sumy National Agrarian University, 60, Kirova Str., 40021 Sumy,Ukraine |
| Е-mail | apogrebnjak@simp.sumy.ua |
| Issue | Volume 1, Year 2009, Number 4 |
| Dates | Received 30.10.2009, in final form 01.12.2009 |
| Citation | English version is not accessible |
| DOI | |
| PACS Number(s) | 61.46 – w.62.20.Qp, 62.25. – q |
| Keywords | Low-carbon steel, Fatigue deformation, Auger spectroscopy, Inner friction, X-ray structure analysis, Nanohardness. |
| Annotation |
The first results allowing new understanding of physical processes occurring under fatigue deformation in low-carbon steels are reported. After every stage of fatigue deformation, samples were investigated using Auger electron spectroscopy, optical and scanning electron microscopy, atomic-force microscopy, measurements of internal friction, x-ray diffraction analysis (XRD), x-ray fluorescent analysis, measurements of nanohardness, and plotted fatigue kinetic curves. We found formation of “dark spots”, slip bands, and new phases as FeCO3 (iron carbonate), as well as iron oxalate C2FeO4. They seemed to be conditioned either by the process of cyclic friction occurring in slip planes of intensively deformed grains, which possibly resulted in separation of individual submicron structured metal particles, or by action of high temperatures arising in submicrovolume local regions, in which chemical reactions are initiated. |
|
List of References English version of article |
Other articles from this number
1) Stochastic Oscillations Suppression by Levy-Noise [0-0]2) Effect of the Focusing Magnetostatic Field Profile on the Diffraction Radiation Oscillator Excitation [065-075]
3) Analysis of the Thermal Conditions of Pulse Impact Avalanche Transit-Time Diodes [076-080]
4) Properties of Anisotropic Stratified Structure at the Wave Propagation Along the Interface [081-089]
5) Grain-Boundary Diffusion in Cu and Ni Films With Thin Metal Coating [090-100]
6) Nanocomposite Coatings Based on Ti-N-Cr/Ni-Cr-B-Si-Fe, Gained by two Technologies [0-0]
7) Physical and Mechanical Properties of the Nanocomposite and Combined Ti-N-Si/WC-Co-Cr та Ti-N-Si/(Cr3C2)75-(NiCr)25 Coatings [101-110]
8) Effect of the Type of Electrolyte Аnion on the Porous InP Morphology Obtained by the Electrochemical Etching [111-118]
9) Surface Morphology and Optical Properties of CdSe Films Obtained by the Close-Spaced Vacuum Sublimation Technique [119-126]
10) Study of the Influence of Iron Carbide on Some Properties of Alloys of Iron [0-0]
