Principles of Structure and Phase Composition Formation in Composite Master Alloys of the Al–Ti–B/B4c Systems Used for Aluminum Alloy Modification


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Abstract

The principles of formation of structure and properties of materials produced by self-propagating hightemperature synthesis (SHS) from the Al–Ti–B/B4C powder systems are identified. It is shown that the SHSmaterials produced from the Al–Ti–B powder systems consist of a TiAl intermetallic matrix with inclusions of titanium diboride particles. It is found out that an introduction of 1 wt.% of TiB2 particles into the melt of the AD35 aluminum alloy allows reducing the grain size from 620 to 220 μm and gives rise to an increase in the ultimate tensile strength of as-cast specimens from 100 to 145 MPa and in the plasticity from 7 to 9%.

About the authors

I. A. Zhukov

National Research Tomsk State University; Institute for Problems of Chemical and Energetic Technologies of the Siberian Branch of the Russian Academy of Sciences

Author for correspondence.
Email: cool.mr.c@mail.ru
Russian Federation, Tomsk; Biysk

V. V. Promakhov

National Research Tomsk State University; Institute for Problems of Chemical and Energetic Technologies of the Siberian Branch of the Russian Academy of Sciences

Email: cool.mr.c@mail.ru
Russian Federation, Tomsk; Biysk

A. E. Matveev

National Research Tomsk State University

Email: cool.mr.c@mail.ru
Russian Federation, Tomsk

V. V. Platov

National Research Tomsk State University

Email: cool.mr.c@mail.ru
Russian Federation, Tomsk

A. P. Khrustalev

National Research Tomsk State University

Email: cool.mr.c@mail.ru
Russian Federation, Tomsk

Ya. A. Dubkova

National Research Tomsk State University

Email: cool.mr.c@mail.ru
Russian Federation, Tomsk

S. A. Vorozhtsov

National Research Tomsk State University

Email: cool.mr.c@mail.ru
Russian Federation, Tomsk

A. I. Potekaev

National Research Tomsk State University; V. D. Kuznetsov Siberian Physical-Technical Institute at Tomsk State University

Email: cool.mr.c@mail.ru
Russian Federation, Tomsk; Tomsk

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