Paper Title:
Mechanical Properties of Al-Si Alloy-Based Composites Reinforced by In Situ TiB2 Particulates
  Abstract

Al–Si alloy-based composites are widely used in automotive, aerospace and mineral processing industries with improved properties. In situ techniques have been developed to fabricate Al–Si alloy-based composites, which can lead to better adhesion at the interface and hence better mechanical properties. Al–Si alloy reinforced with in situ TiB2 particles was synthesized successfully by using salt reaction route. These in situ composites have shown significant improvement in mechanical properties compared with the base alloy. The wear resistance of the alloy is also significantly improved with the addition of TiB2 particles. The hardness, strength and wear resistance are strengthened with increasing TiB2 content of the composites. TiB2 can act not only as a grain refiner for primary Al but also as a modifier of Si in eutectic mixture. Analysis of the worn surface of Al–Si/TiB2 composites tested under loads of 30 and 110N suggests that ploughing is predominant at lower loads and delamination is predominant at higher loads.

  Info
Periodical
Advanced Materials Research (Volumes 105-106)
Edited by
Wei Pan and Jianghong Gong
Pages
126-129
DOI
10.4028/www.scientific.net/AMR.105-106.126
Citation
J. P. Yao, S. Zhong, L. Zhang, H. P. Zhao, "Mechanical Properties of Al-Si Alloy-Based Composites Reinforced by In Situ TiB2 Particulates", Advanced Materials Research, Vols. 105-106, pp. 126-129, 2010
Online since
April 2010
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Price
$32.00
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