Mechanical properties of Al-60 Pct SiCp composites alloyed with Mg
Küçük Resim Yok
Tarih
2004
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In the present work, the effect of an Mg addition on the mechanical properties of the Al-60 vol pet SiCp composites were investigated by uniaxial compression, three-point bending, impact and wear tests (composite-metal and composite-abrasive types). The composites were produced by the pressure-infiltration technique. The composition of the Al matrix was varied between 0 and 8 pet Mg. The mean diameter of the SiC particles was 23 mum. Upon addition of Mg, Mg2Si precipitated in the matrix and the amount of the porosity dramatically decreased. Mg-alloyed-matrix composites exhibited higher strength, lower toughness, and higher wear resistance than pure-Al-matrix composites. During composite-metal wear testina, wear progressed in two sequential periods (running-in and steady state). Weight loss during wear testing, decreased with increasing Mg content of the matrix. The degree of improvement of abrasive resistance depended on the abrasive-grain size. Above 200 degreesC, the composite-abrasive wear resistance decreased with increasing test temperature for all materials.
Açıklama
Anahtar Kelimeler
Metal-Matrix Composites, Dry Sliding Wear, Fiber-Reinforced Aluminum, Abrasive Wear, Particle Composites, Threshold Pressure, Powder Compacts, Infiltration Technique, Interfacial Reactions, Stainless-Steel
Kaynak
Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
35A
Sayı
7
