Căutare 2008 fascicula9 nr1 după Titlu

Afișează articolele 15-22 of 22

    • Researches Concerning the Deformation Behaviour of a Low Carbon Steel 

      Cănănău, Nicolae; Alexandru, Petrică; Gurău, Gheorghe; Ionel, Petrea (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      The paper shows the results of the researches meant to establish the equation of deformation behavior of low carbon steel. The behavior law is established by the experimental way, using the torsion test method. The ...

    • Study of Severe Plastic Deformation by Torsion Test 

      Gurău, Carmela; Gurău, Gheorghe; Cănănău, Nicolae (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      High Torsion Pressure (HPT) is an advanced tool for inducing very significant grain refinement in a wide range of metals. In this research were studied parameters of severe plastic deformation using the torsion test. The ...

    • Surface hardening for Low Carbon Steel (A3k) by Yag: Nd Pulse Laser Thermal Activation 

      Cazacu, Nelu; Sava, Liliana; Dobrovici, Sorin; Baclea, Adolf (Universitatea "Dunărea de Jos" din Galați, 2008)
      The paper is based on experiments for surface hardening on A3k (low carbon steel) samples using YAG:Nd pulse laser. A small x-y moving system conducted by PC was made for sample scanning, relative to fixed focused laser ...

    • Surface Hardenining for 38MoCrA109 Steel Using Fluidized Bed Nitriding 

      Baclea, Adolf; Dobrovici, Sorin; Cazacu, Nelu (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      The paper is based an nitriding experiments made in a fluidized bed laboratory furnace. Fluidization was obtained in a steel refractory retort by solid granular (burned fire clay) and fluid (mixture of ammonia and ...

    • The Conservability of Old Wood at the Contact with Metallic Structural Components from Artifacts 

      Sandu, Ion; Vasilache, Viorica; Hayashi, Mikiko; Vrânceanu, Narcisa; Ciocan, Adelina; Sandu, Andrei Victor (Universitatea "Dunărea de Jos" din Galați, 2008)
      The paper presents the impact of metallic pieces being in contact with wood, as structural elements, used in obtaining artifacts. The paper studies, based on old samples, the reciprocal effect obtained at the wood-metal ...

    • The Influence of Cold Rolling on the Mechanical Characteristics for Drawing Steels 

      Potecaşu, Octavian; Potecaşu, Florentina; Alexandru, Petrică; Radu, Tamara (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      The paper presents the changes of the mechanical and technological characteristics of steel for deep drawing, cold rolled and recrystallization heat treated. The research was conducted on samples taken from cold rolled ...

    • Tribological Behaviour of Nitrocarburized Steels After Thermo-Magnetic Treatments 

      Papadatu, Carmen Penelopi (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      Two types of steels were subjected to a nitro-carburized thermo-chemical treatment after thermo-magnetic treatments. The structural aspects into the superficial layer of these steels are studied during the friction process ...

    • XRD Analysis in Front of a Corrosion Crack Tip 

      Gheorghieș, C.; Levcovici, S.; Păunoiu, V.; Gheorgieș, L.; Oancea, C.; Ostache, I.; Alexandru, P. (Universitatea "Dunărea de Jos" din Galați, 2008)
      During exploitation of the heat exchangers some damages can appear in the contact region between the gaskets and the stainless steel walls. The studies upon the material were performed using SEM microscopy, X-ray ...