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Preparation and testing of prototype M▫$g_2$▫Si-Mg-TiC and M▫$g_2Si-TiC/TiB_2$▫ compositesKevorkijan, Varužan ; Škapin, Srečo D.In this work, the preparation of various light-weight Mg-Mg2Si-TiC metal matrix composites and Mg2Si-TiC/TiB2 ceramic composites is described, and the influence of their structure on mechanical ... response is discussed. Mg-Mg2Si-TiC composites with continuous magnesium matrix densified to > 95% T.D. were fabricated by pressureless reactive infiltration of performs made from Mg2Si and TiC powders. Infiltration was performed in an argon atmosphere at temperatures 700°, 800°, and 900°C for 1 h. Trials made with Mg2Si preforms reinforced with TiB2 were unsuccessful. Mg2Si-TiC/TiB2 ceramic composites densified to > 97% T.D. were prepared by pressureless reactive sintering of tables made from Mg2Si and TiC or TiB2 powders. The reactive sintering was performed at 1020°C for 0.5-1 h under a protective argon atmosphere. The phases present in the obtained composite samples have been identified by scanning electron microscopy (SEM)/energy dispersive X-ray spectroscopy. In addition, room temperature tensile tests and hardness measurements (HV) were also undertaken. The results show that Mg-Mg2Si-TiC composites are with mechanical properties (Young modulus: 88-97 GPa, tensile strength: 186-197 MPa, hardness: 4.9-5.1 GPa, and fracture toughness: 6.4-6.5 MPa m1/2) superior to that of conventional magnesium alloys, while Mg2Si-TiC/TiB2 samples combined enhanced hardness (9-10 GPa) and fracture toughness (1.4-2.3 MPa m1/2) achieved in low density (2.2-2.5 g/cm3) composite structure.Vir: Materials and manufacturing processes. - ISSN 1042-6914 (Vol. 26, iss. 4, 2011, str. 592-598)Vrsta gradiva - članek, sestavni delLeto - 2011Jezik - angleškiCOBISS.SI-ID - 14948374
Avtor
Kevorkijan, Varužan |
Škapin, Srečo D.
Teme
metal matrix composites |
characterization |
hardness |
infiltration |
microstructure |
sitnering |
strength |
synthesis
Vnos na polico
Trajna povezava
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Kevorkijan, Varužan | 04968 |
Škapin, Srečo D. | 11093 |
Vir: Osebne bibliografije
in: SICRIS
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