Browsing by Author "98b2b9cb-51b1-465c-9751-c2bfeb0d6bc6"
Now showing items 1-8 of 8
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Fabrication of Ultrafine Low Carbon Metallic Multilayer by Accumulative Roll Bonding
Gurău, Carmela; Gurău, Gheorghe; Gurău, Lidia; Alexandru, Petrică (Universitatea "Dunărea de Jos" din Galaţi, 2014)The effect of grain refinements by Accumulative Roll Bonding (ARB) was investigated on low carbon steel. Optical microscopy (OM) and microhardness tests were used to check the phase changes and hardness before and after ... -
Hardened Aluminium with Discontinuous Copper Threads
Potecașu, octavian; Potecașu, Florentina; Alexandru, Petrică (Universitatea "Dunărea de Jos" din Galați, 2006)The paper presents the influence of the quantity of discontinuous reinforced threads on the mechanical characteristics of some samples obtained through deformation from composite material with metallic matrix. As a raw ... -
Mechanical properties and Abrasive Wear Behavior of Fluidized-bed Carburized Sintered Iron Alloys
Marin, Mihaela; Potecașu, Florentina; Drugescu, Elena; Potecașu, Octavian; Alexandru, Petrică (Universitatea "Dunărea de Jos" din Galați, 2012)This paper is a study of the influence of fluidized bed carburizing of sintered steels on the mechanical properties and the abrasive wear behavior for two different types of powder. Carburizing was carried out at a ... -
Research on the Influence of the Complementary Phase Percentange on the Properties of Copper-Based Composites
Boiciuc, Simona; Alexandru, Petrică (Universitatea "Dunărea de Jos" din Galaţi, 2014)The article presents the method to obtain copper matrix composite with Cu- Al-Fe alloy particles as complementary phase. The samples were obtained by powder metallurgy methods using different percentages of complementary ... -
Resesrches on the Production of Copper-Based Composites by Powder Metallurgy Methods
Boiciuc, Simona; Alexandru, Petrică (Universitatea "Dunărea de Jos" din Galați, 2014)The article presents how to obtain copper matrix composite with alloy particles of NiCrBFeAl as complementary phase. The samples were obtained by powder metallurgy methods using different percentages of the additional ... -
Studies and Research Obtaining Bronze Filters Using Powder Metallurgy Methods
Boiciuc, Simona; Alexandru, Petrică (Universitatea "Dunărea de Jos" din Galați, 2015)The article presents how to obtain porous bronze products using copper - based powder by powder metallurgy methods. The formation of tablets was done by free pouring the spherical powder into the mould, followed by their ... -
The Influence of Steam Treatment on Mechanical Properties and Abrasive Wear Behavior of Sintered P/M Steels
Marin, Mihaela; Potecaşu, Florentina; Drugescu, Elena; Potecaşu, Octavian; Alexandru, Petrică (Universitatea "Dunărea de Jos" din Galaţi, 2012)In this paper is a study of the influence of steam treatment on sintered P/M steels, for three different types of powder. The abrasive wear of steam-treated sintered iron is analysed by abrasion tests. The specimens were ... -
Two-Way Shape memory Effect in a Cu-13wt. %Al-4 wt.%Ni Shape Memory alloy by the Thermo-Mechanical Cycling Method
Gurău, Carmela; Gurău, Gheorghe; Alexandru, Petrică (Universitatea "Dunărea de Jos" din Galați, 2007)A Cu - 13 % wt Al 4% wt Ni polycrystalline shape memory alloy has studied with a thermo mechanical cycling method. The two – way shape memory effect (TWSME) was obtained bending the alloy around a cylinder mold and by ...