Al - BN interaction in a high-strength lightweight Al/BN metal-matrix composite: Theoretical modelling and experimental verification

JOURNAL OF ALLOYS AND COMPOUNDS

卷:782

Article

Kvashnin, Dmitry G.¹  Firestein, Konstantin L.²  Popov, Zakhar, I¹  Corthay, Shakti¹  Sorokin, Pavel B.¹  Golberg, Dmitri, V^2,3  Shtansky, Dmitry, V¹ 

[1] Natl Univ Sci & Technol MISiS, Leninsky Prospect 4, Moscow 119049, Russia

[2] Queensland Univ Technol, Sci & Engn Fac, 2nd George St, Brisbane, Qld 4000, Australia

[3] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton MANA, Namiki 1-1, Ibaraki 3050044, Japan

关键词: Boron nitride particles;    Metal-matrix composites;    Spark plasma sintering;    Microstructure;    Atomic structure calculations;   

DOI  :  10.1016/j.jallcom.2018.12.261

来源: Elsevier

【 摘 要 】

In recent years, there has been a great interest in the application of h-BN as a reinforcing phase in Al-based metal-matrix composites. The formation of intermediate phases, such as AIN and AIB(2), was frequently reported that had a positive effect on material strength. The present paper gives a detailed description of diffusion-controlled phase transformations in Al/BN composites produced by spark plasma sintering. The resulting structures have been thoroughly studied by a combination of X-ray diffraction, scanning electron microscopy, high-angle annular dark-field scanning transmission electron microscopy, and energy-dispersive spectroscopy. The phase transformations were investigated using density functional theory to support experimental observations. (C) 2018 Elsevier B.V. All rights reserved.

【 授权许可】

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