caa a22 4500 467983151 CHVBK 20180323112524.0 cr unu---uuuuu 170328e19901101xx s 000 0 eng 10.1007/BF00700065 doi (NATIONALLICENCE)springer-10.1007/BF00700065 Strain aging in the surface layers of low alloy steel [Elektronische Daten] [L. Rybakova, S. Bulychev, V. Tumasyan, L. Kuksenova, O. Alekhin] Conclusion: Investigation of the process of anomalous strain aging in the surface layers of low carbon, steel after grinding and lengthy aging confirmed the decisive role of carbon in the change of the mechanical properties of the surface layers and of their physical state. The microhardness of steel (0.033% C; 0.010% N) after aging for one year more than doubles in the surface layers 6-8 μm thick. Across the layer it changes nonmonotonically; hardness changes most in the surface layer 1-2 μm thick. The effect of strain aging of steel is associated with the gradual development of a mosaic structure in the crystal grains, caused by the redistribution of dislocations. The magnitude of misorientation of substructural elements of the grains, evaluated according to the size of the interference spots on the x-ray photograph, changes during aging from a few to tens of degrees. The change of properties of the subsurface layers in time is apparently caused by hydrogenation that occurs when steel is ground, and by the subsequent process of redistribution of impurity elements, causing a high degree of lattice distortions in it. Plenum Publishing Corporation, 1991 Rybakova L. aut Bulychev S. aut Tumasyan V. aut Kuksenova L. aut Alekhin O. aut Metal Science and Heat Treatment Kluwer Academic Publishers-Plenum Publishers 32/11(1990-11-01), 846-851 0026-0673 32:11<846 1990 32 11041 https://doi.org/10.1007/BF00700065 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00700065 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rybakova L. aut NATIONALLICENCE 700 1- Bulychev S. aut NATIONALLICENCE 700 1- Tumasyan V. aut NATIONALLICENCE 700 1- Kuksenova L. aut NATIONALLICENCE 700 1- Alekhin O. aut NATIONALLICENCE 773 0- Metal Science and Heat Treatment Kluwer Academic Publishers-Plenum Publishers 32/11(1990-11-01), 846-851 0026-0673 32:11<846 1990 32 11041 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer