Abstract
Cast Al–Si alloys are widely used for their excellent casting properties, but their applications are restricted in some special fields because of their low mechanical properties. In this paper, H3BO3 and TiO2 were used as raw materials to prepare TiB2/Al–Si composites with different mass fractions by in situ generation. The effects of TiB2 particle content on microstructure and properties of the alloy were studied. The results showed that the microstructure of the alloy was mainly composed of coarse primary α-Al dendrites and long-striped eutectic Si particles. The coarse primary α-Al particles were obviously refined and the edge of acicular eutectic Si was rounded with the addition of TiB2 particles. When the particle content was low, the particle distribution was dispersed, and a large number of particles were located in the grain boundary. When the particle content was high, the particles were agglomerated and gathered at the grain boundary. With the increase of particle content, the mechanical properties of the material were obviously enhanced. When the content of TiB2 particles was 5%, the tensile strength and yield strength reached 200 and 160 MPa, which were 22.8 and 34% higher than those of matrix, respectively.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
J. Sun, X. Zhang, Y. Zhang, Effect of alloy elements on the morphology transformation of TiB2 particle in Al matrix. Micron 70, 21–25 (2015)
A. Rabiezadeh, A.M. Hadian, A. Ataie, Synthesis and sintering of TiB2 nanoparticles. Ceram. Int. 40(10), 15775–15782 (2014)
V.I. Nikitin, J.I.E. Wanqi, E.G. Kandalova et al., Preparation of Al–Ti–B grain refiner by SHS technology. Scripta Mater. 42(6), 561–566 (2000)
E.M. Sharifi, F. Karimzadeh, M.H. Enayati, Synthesis of titanium diboride reinforced alumina matrix nanocomposite by mechanochemical reaction of Al–TiO2–B2O3. J. Alloy. Compd. 502(2), 508–512 (2010)
S. Lakshmi, L. Lu, M. Gupta, In situ preparation of TiB2 reinforced Al based composites. J. Mater. Process. Technol. 73(1), 160–166 (1998)
H. Sun, X. Li, D. Chen, H. Wang, Enhanced corrosion resistance of discontinuous anodic film on in situ TiB2/A356 composite by cerium electrolysis treatment. J. Mater. Sci. 44(3), 786–793 (2008)
E. Wang, T. Gao, J. Nie, X. Liu, Grain refinement limit and mechanical properties of 6063 alloy inoculated by Al–Ti–C (B) master alloys. J. Alloy. Compd. 594, 7–11 (2014)
H. Yi, N. Ma, Y. Zhang, X. Li, H. Wang, Effective elastic moduli of Al–Si composites reinforced in situ with TiB2 particles. Scripta Mater. 54(6), 1093–1097 (2006)
X. Wang, Z. Liu, W. Dai, Q. Han, On the understanding of aluminum grain refinement by Al–Ti–B type master alloys. Metall. Mater. Trans. B 46(4), 1620–1625 (2014)
S. Amirkhanlou, M. Rahimian, M. Ketabchi, N. Parvin, P. Yaghinali, F. Carreño, Strengthening mechanisms in nanostructured Al/SiCp composite manufactured by accumulative press bonding. Metall. Mater. Trans. A 47(10), 5136–5145 (2016)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Wang, H., Chai, L., Li, H. (2019). Effect of In Situ TiB2 Particle Content on Microstructure and Properties of Cast Al–Si Alloy. In: Han, Y. (eds) Physics and Engineering of Metallic Materials. CMC 2018. Springer Proceedings in Physics, vol 217. Springer, Singapore. https://doi.org/10.1007/978-981-13-5944-6_24
Download citation
DOI: https://doi.org/10.1007/978-981-13-5944-6_24
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-5943-9
Online ISBN: 978-981-13-5944-6
eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)