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Article

Influence of W Addition on Microstructure and Mechanical Properties of Al-12%Si Alloys

by
Anna Zykova
1,*,
Nikita Martyushev
1,
Vadim Skeeba
2,
Denis Zadkov
3 and
Andrey Kuzkin
3
1
Tomsk Polytechnic University, 30, Lenina Ave., Tomsk 634050, Russia
2
Novosibirsk State Technical University, 20 Prospekt K. Marksa, Novosibirsk 630073, Russia
3
Saint-Petersburg Mining University, 2, 21 Line of Vasilyevsky Island, Saint Petersburg 199106, Russia
*
Author to whom correspondence should be addressed.
Materials 2019, 12(6), 981; https://doi.org/10.3390/ma12060981
Submission received: 5 March 2019 / Revised: 18 March 2019 / Accepted: 22 March 2019 / Published: 25 March 2019
(This article belongs to the Special Issue Applications of Al Alloys on Lightweight Structures)
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Abstract

A widespread method exerting the influence on the homogeneous formation of the microstructure and enhancement of strength properties of Al-Si alloys is a modification by super- and nanodispersed particles of different chemical compositions. In spite of the significant advances in the studies of the influence of various modifying compositions on the structure and mechanical properties of casted silumins, the literature contains no data about the influence of nanodispersed W-powder on formation of the structural-phase state and mechanical properties of Al-Si alloys. The paper considers the influence of 0.01–0.5 mass % W nanopowder on the structural-phase state and mechanical properties of an Al-12%Si alloy. It has been established that 0.1 mass % of W is an optimal addition. It results in the uniform distribution of eutectic (α-Al + Si), a 1.5-time decrease in the size of the plates of eutectic Si, a change of the shape of coarse plates (coarse plate-like or acicular) into a fine fibrous one, and an enhancement of the mechanical properties by 16–20%.
Keywords: Al-12%Si alloy; W; nanopowder; modification; microstructure; mechanical properties Al-12%Si alloy; W; nanopowder; modification; microstructure; mechanical properties

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MDPI and ACS Style

Zykova, A.; Martyushev, N.; Skeeba, V.; Zadkov, D.; Kuzkin, A. Influence of W Addition on Microstructure and Mechanical Properties of Al-12%Si Alloys. Materials 2019, 12, 981. https://doi.org/10.3390/ma12060981

AMA Style

Zykova A, Martyushev N, Skeeba V, Zadkov D, Kuzkin A. Influence of W Addition on Microstructure and Mechanical Properties of Al-12%Si Alloys. Materials. 2019; 12(6):981. https://doi.org/10.3390/ma12060981

Chicago/Turabian Style

Zykova, Anna, Nikita Martyushev, Vadim Skeeba, Denis Zadkov, and Andrey Kuzkin. 2019. "Influence of W Addition on Microstructure and Mechanical Properties of Al-12%Si Alloys" Materials 12, no. 6: 981. https://doi.org/10.3390/ma12060981

APA Style

Zykova, A., Martyushev, N., Skeeba, V., Zadkov, D., & Kuzkin, A. (2019). Influence of W Addition on Microstructure and Mechanical Properties of Al-12%Si Alloys. Materials, 12(6), 981. https://doi.org/10.3390/ma12060981

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