Viscoelastic behavior of a novel aluminum metal matrix composite and comparison with pure aluminum, aluminum alloys, and a composite made of Al–Mg–Si alloy reinforced with SiC particles
10.1016/j.jallcom.2018.02.103
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/115871
Tipus de documentArticle
Data publicació2018-02
Condicions d'accésAccés obert
Tots els drets reservats. Aquesta obra està protegida pels drets de propietat intel·lectual i
industrial corresponents. Sense perjudici de les exempcions legals existents, queda prohibida la seva
reproducció, distribució, comunicació pública o transformació sense l'autorització del titular dels drets
Abstract
The viscoelastic response of a novel composite (A356 aluminum alloy matrix with ceramic reinforcement particles developed from colliery shale waste) is measured with dynamic-mechanical analyzer, and is compared to pure aluminum, aluminum alloys A356, 7075 and 2024, and another composite (6061 aluminum alloy matrix reinforced with SiC particles). The studied materials show some common features but the novel composite is one of the most stable (a rapid decrease in stiffness starts only at very high temperature). Moreover, compared to the A356 alloy, the composite shows higher stiffness (since the reinforcement particles are stiffer than the A356 matrix and may foster precipitation hardening) and higher mechanical damping/internal friction (likely due to relaxations associated with the reinforcement particles and to the larger grain size for the A356 alloy). A typical relaxation peak in aluminum attributed to grain boundary sliding is suppressed in the composite because the reinforcement particles pin the grain boundaries.
CitacióRojas, J.I., Venkata Siva, S.B., Sahoo, K.L., Crespo, D. Viscoelastic behavior of a novel aluminum metal matrix composite and comparison with pure aluminum, aluminum alloys, and a composite made of Al–Mg–Si alloy reinforced with SiC particles. "Journal of alloys and compounds", Febrer 2018, vol. 744, núm. May 2018, p. 445-452.
ISSN0925-8388
Altres identificadorshttps://doi.org/10.1016/j.jallcom.2018.02.103
Col·leccions
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
Rojas 2018 JALCOM accepted manuscript.pdf | Artículo principal | 2,363Mb | Visualitza/Obre | |
Rojas 2018 JALCOM accepted manuscript.pdf | Artículo principal | 2,363Mb | Visualitza/Obre |