Thermal cycling behaviour of an extruded aluminium alloy/SiCp composite

✍ Scribed by İsmail Özdemir; Kazim Önel

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 425 KB
• Volume: 35
• Category: Article
• ISSN: 1359-8368
• DOI: 10.1016/j.compositesb.2004.02.007

✦ Synopsis

Thermal cycling behavior of extruded aluminium-silicon alloy (Al -7% Si-0.7% Mg) based composites reinforced with 10 and 20 vol% particulate silicon carbide and the matrix alloy was studied. The composites and the matrix alloy were thermally cycled between 100 and 430 8C with the applied stresses below the yield strength, ranging from 3 to 15 MPa. The elongation to fracture and 'm' values were determined. Under certain loading and thermal cycling conditions, composite samples exhibit fairly high ductility, over 80%, with an increase in 'm' value. The evaluation of the microstructures and RA values show that the thermally cycled samples contain cavities of varying amount along the gauge and exhibit higher homogeneous plastic deformation than those isothermally tensile tested at 430 8C.