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Open AccessArticle

Influence of Titanium Diboride Particle Size on Structure and Mechanical Properties of an Al-Mg Alloy

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Faculty of Physics and Engineering, National Research Tomsk State University, 634050 Tomsk, Russia
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Brunel Centre for Advanced Solidification Technology, Brunel University London, Uxbridge, Middlesex UB8 3PH, UK
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Department of Production Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
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Joint-Stock Company “Scientific-production concern” Mechanical engineering, 125212 Moscow, Russia
*
Author to whom correspondence should be addressed.
Metals 2019, 9(10), 1030; https://doi.org/10.3390/met9101030
Received: 7 August 2019 / Revised: 18 September 2019 / Accepted: 20 September 2019 / Published: 23 September 2019
(This article belongs to the Special Issue Casting and Solidification of Light Alloys)
In the present study, aluminum alloys of the Al-Mg system with titanium diboride particles of different size distribution were obtained. The introduction of particles in the alloy was carried out using master alloys obtained through self-propagating high-temperature synthesis (SHS) process. The master alloys consisted of the intermetallic matrix Al-Ti with distributed TiB2 particles. The master alloys with TiB2 particles of different size distribution were introduced in the melt with simultaneous ultrasonic treatment, which allowed the grain refining of the aluminum alloy during subsequent solidification. It was found that the introduction of micro- and nanoparticles TiB2 increased the yield strength, tensile strength, and plasticity of as-cast aluminum alloys. After pass rolling the castings and subsequent annealing, the effect of the presence of particles on the increase of strength properties is much less felt, as compared with the initial alloy. The recrystallization of the structure after pass rolling and annealing was the major contributor to hardening that minimized the effect of dispersion hardening due to the low content of nanosized titanium diboride. View Full-Text
Keywords: aluminum alloy; titanium diboride; master alloy; structure; mechanical properties aluminum alloy; titanium diboride; master alloy; structure; mechanical properties
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MDPI and ACS Style

Khrustalyov, A.P.; Kozulin, A.A.; Zhukov, I.A.; Khmeleva, M.G.; Vorozhtsov, A.B.; Eskin, D.; Chankitmunkong, S.; Platov, V.V.; Vasilyev, S.V. Influence of Titanium Diboride Particle Size on Structure and Mechanical Properties of an Al-Mg Alloy. Metals 2019, 9, 1030.

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