PRINCIPLES OF STRUCTURE AND PHASE COMPOSITION FORMATION IN COMPOSITE MASTER ALLOYS OF THE Al-Ti-B/[B.sub.4]C SYSTEMS USED FOR ALUMINUM ALLOY MODIFICATION

The principles of formation of structure and properties of materials produced by self-propagating high-temperature synthesis (SHS) from the Al-Ti-B/[B.sub.4]C powder systems are identified. It is shown that the SHS-materials produced from the Al-Ti-B powder systems consist of a TiAl intermetallic ma...

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Bibliographic Details
Published inRussian physics journal Vol. 60; no. 11; p. 2025
Main Authors Zhukov, I.A, Promakhov, V.V, Matveev, A.E, Platov, V.V, Khrustalev, A.P, Dubkova, Ya. A, Vorozhtsov, S.A, Potekaev, A.I
Format Journal Article
LanguageEnglish
Published Springer 01.03.2018
Subjects
Aluminum (Metal)
Aluminum alloys
Intermetallic compounds
Mechanical properties
Powders (Particulate matter)
Specialty metals industry
Titanium
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Summary:The principles of formation of structure and properties of materials produced by self-propagating high-temperature synthesis (SHS) from the Al-Ti-B/[B.sub.4]C powder systems are identified. It is shown that the SHS-materials 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 Ti[B.sub.2] particles into the melt of the AD35 aluminum alloy allows reducing the grain size from 620 to 220 fim 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%. Keywords: master alloy, Al-Ti system, aluminum alloys.
ISSN:1064-8887
1573-9228
DOI:10.1007/s11182-018-1319-4