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Search Results: 1 - 10 of 276104 matches for " Gromov V.E. "
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Nanosize Carbides Formation and Fatigue Life Increase of Stainless Steel by Electron Beam Treatment
Gromov V.E.,Sizov V.V.,Vorobyov S.V.,Ivanov Yu.F.
Proceedings of the International Conference Nanomaterials : Applications and Properties , 2012,
Abstract: Electron – beam treatment with 20 J/cm2 energy density of Fe-0.20C-23Cr-18Ni stainless steel increases fatigue life up to 2.1 times. Fracture surface investigations have been carried out by the methods of scanning and transmission diffraction electron microscopy and layer-by-layer analysis of structural phase states and defect substructure of steel subjected to the multicyclic fatigue tests, has been made as well. Nanosize (Cr,Fe)23C6 carbides formation and physical reasons of steel fatigue life increase by electron – beam treatment have been found out.
Nanosize Structure Phase States of Ti Surface Layer Formed During Electroexplosive Carboborating
Gromov V.E.,Soskova N.A.,Raikov S.V.,Budovskikh E.A.
Proceedings of the International Conference Nanomaterials : Applications and Properties , 2012,
Abstract: The formation of structural-phase states in Ti surface layer during electroexplosive carboborating was carried out by methods of scanning and transmission diffraction electron microscopy. The pulse plasma jet formed from the products of electrical explosion of carbonic tape with boron powder served as an instrument of the action on Ti surface. The absorbed power density during treatment was 6.5 GW/m2. It is established that the thickness of strengthened surface layer reaches ~ 125 μm. The electroexplosive carboborating leads to a significant (up to 12 times) increase in microhardness of the titanium irradiated surface; secondly, the value of microhardness is changed in a nonmonotonic way depending on the distance to the treatment surface. The analysis of the coating structure (~10 μm) has revealed the presence of the following phases: graphite in the quasiamorphous state, nanosized (5-50 nm) precipitations of titanium boride of TiB composition, β-titanium, α-titanium crystals of plate morphology (40-350 nm), titanium carbide particles (15-25 nm) located in the α-Ti structure.
Nieuw-Guinea, een balans en een programma
V.E. Korn
Bijdragen tot de Taal-, Land- en Volkenkunde , 1955,
Abstract:
Neerlands taak bij het verlenen van internationale hulp aan onderontwikkelde landen
V.E. Korn
Bijdragen tot de Taal-, Land- en Volkenkunde , 1951,
Abstract:
Verslag der herdenking van het 100-jarig bestaan van het Koninklijk Instituut voor Taal-, Land- en Volkenkunde te ‘s-Gravenhage
V.E. Korn
Bijdragen tot de Taal-, Land- en Volkenkunde , 1951,
Abstract:
Problemen der Makassaars-Boeginese samenleving
V.E. Korn
Bijdragen tot de Taal-, Land- en Volkenkunde , 1952,
Abstract:
Oosterse visie op westers bewind
V.E. Korn
Bijdragen tot de Taal-, Land- en Volkenkunde , 1957,
Abstract:
De Thesawalamai. (Aant. bij nr. 1417)
V.E. Korn
Bijdragen tot de Taal-, Land- en Volkenkunde , 1955,
Abstract:
Batakse offerande (IV-V; met platen)
V.E. Korn
Bijdragen tot de Taal-, Land- en Volkenkunde , 1953,
Abstract:
Batakse offerande (I-III; met platen)
V.E. Korn
Bijdragen tot de Taal-, Land- en Volkenkunde , 1953,
Abstract:
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