Investigation of wear behavior of aged and non-aged SiC-reinforced AlSi7Mg2 metal matrix composites in dry sliding conditions
Yükleniyor...
Tarih
2020-01
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
SpringerLink
Erişim Hakkı
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-ShareAlike 3.0 United States
Attribution-NonCommercial-ShareAlike 3.0 United States
Özet
Metal matrix composites (MMCs) with their splendid mechanical properties have been specifcally designed for use in felds
such as aerospace and aviation. The presence of hard ceramic particles in MMC increases the hardness of the matrix product
and decreases its coefcient of friction. Therefore, the wear resistance is improved. Moreover, the mechanical properties of
these composite materials can be improved by applying heat treatments. In this study, AlSi7Mg2 MMCs with 15 wt% SiC
reinforcement were produced by squeeze casting technique. Some of the composites were aged by heat treatment. Hardness
values of aged and non-aged composites were compared. In addition, abrasive wear behaviors of these composites were
investigated on pin-on-disk device, depending on the load (7, 12 and 17 N), the sliding speed (0.2, 0.3 and 0.4 m/s) and the
sliding distance (700, 1000 and 1300 m). Worn surfaces were also analyzed by scanning electron microscopy (SEM). As a
result of the analyses, it was determined that both the hardness values and the wear resistance were higher in the composites
subjected to aging treatment. Furthermore, it was observed that the increase in the applied load led up to the weight loss.
The increase in the sliding distance increased both friction coefcient and weight loss. The increase in sliding speed also
made way for the friction coefcient but ensured less weight loss. When SEM images were examined, it was ascertained
that deformation and tribo-surface formation had a signifcant efect on weight losses.
Açıklama
Anahtar Kelimeler
Aging, Composite, SiC, Squeeze Casting, Wear
Kaynak
WoS Q Değeri
N/A
Scopus Q Değeri
N/A
Cilt
42
Sayı
Künye
Çelik, Yahya H., Kılıçkap, E., Demir, Mehmet E., Kalkanlı, A. (2020). Investigation of wear behavior of aged and non-aged SiC-reinforced AlSi7Mg2 metal matrix composites in dry sliding conditions. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 42, pp.1-9. DOI:https://doi.org/10.1007/s40430-019-2088-x
