Microstructural and nuclear magnetic resonance studies of solid-state amorphization in Al-Ti-Si composites prepared by mechanical alloying

Manna, I; Nandi, P; Bandyopadhyay, B; Ghoshray, K; Ghoshray, A

doi:10.1016/j.actamat.2004.05.026

Title: Microstructural and nuclear magnetic resonance studies of solid-state amorphization in Al-Ti-Si composites prepared by mechanical alloying

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Abstract

Three Al{sub 30}Ti{sub 70-x} Si{sub x} (x=10, 20, 30), along with an Al-rich (Al{sub 50}Ti{sub 40}Si{sub 10}) and an Al-lean (Al{sub 10}Ti{sub 60}Si{sub 30}) elemental powder blends were subjected to mechanical alloying by high-energy planetary ball milling to yield a composite microstructure with varying proportions of amorphous and nanocrystalline intermetallic phases. Microstructural characterization at different stages of milling was carried out by X-ray diffraction, high-resolution transmission electron microscopy and energy dispersive X-ray spectroscopy. Furthermore, {sup 27}Al nuclear magnetic resonance (NMR) studies were undertaken to probe the mechanism of solid-state amorphization. Ball milling leads to alloying, nanocrystallization and partial solid-state amorphization followed/accompanied by strain-induced nucleation of nanocrystalline intermetallic phases from an amorphous solid solution. Both these amorphous and nano-intermetallic phases are associated with characteristic NMR peaks at lower frequencies (than that of pure Al). Thus, mechanical alloying of Al-Ti-Si appears a suitable technique for developing nanocrystalline intermetallic phase/compound dispersed amorphous matrix composites.

Authors:: Manna, I; Nandi, P; Bandyopadhyay, B; Ghoshray, K; Ghoshray, A

Publication Date:: Mon Aug 16 00:00:00 EDT 2004

OSTI Identifier:: 20634744

Resource Type:: Journal Article

Journal Name:: Acta Materialia

Additional Journal Information:: Journal Volume: 52; Journal Issue: 14; Other Information: DOI: 10.1016/j.actamat.2004.05.026; PII: S1359645404003015; Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1359-6454

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; ALUMINIUM ALLOYS; AMORPHOUS STATE; CRYSTALS; MICROSTRUCTURE; NANOSTRUCTURES; NUCLEAR MAGNETIC RESONANCE; SILICON ALLOYS; SOLID SOLUTIONS; STRAINS; TITANIUM ALLOYS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY

Citation Formats


                    Manna, I, Nandi, P, Bandyopadhyay, B, Ghoshray, K, and Ghoshray, A. Microstructural and nuclear magnetic resonance studies of solid-state amorphization in Al-Ti-Si composites prepared by mechanical alloying.  United States: N. p., 2004. 
        Web.  doi:10.1016/j.actamat.2004.05.026.

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                    Manna, I, Nandi, P, Bandyopadhyay, B, Ghoshray, K, & Ghoshray, A. Microstructural and nuclear magnetic resonance studies of solid-state amorphization in Al-Ti-Si composites prepared by mechanical alloying.  United States.  https://doi.org/10.1016/j.actamat.2004.05.026

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                    Manna, I, Nandi, P, Bandyopadhyay, B, Ghoshray, K, and Ghoshray, A. 2004.  
        "Microstructural and nuclear magnetic resonance studies of solid-state amorphization in Al-Ti-Si composites prepared by mechanical alloying".  United States.  https://doi.org/10.1016/j.actamat.2004.05.026.

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@article{osti_20634744,

  title        = {Microstructural and nuclear magnetic resonance studies of solid-state amorphization in Al-Ti-Si composites prepared by mechanical alloying},

  author       = {Manna, I and Nandi, P and Bandyopadhyay, B and Ghoshray, K and Ghoshray, A},

  abstractNote = {Three Al{sub 30}Ti{sub 70-x} Si{sub x} (x=10, 20, 30), along with an Al-rich (Al{sub 50}Ti{sub 40}Si{sub 10}) and an Al-lean (Al{sub 10}Ti{sub 60}Si{sub 30}) elemental powder blends were subjected to mechanical alloying by high-energy planetary ball milling to yield a composite microstructure with varying proportions of amorphous and nanocrystalline intermetallic phases. Microstructural characterization at different stages of milling was carried out by X-ray diffraction, high-resolution transmission electron microscopy and energy dispersive X-ray spectroscopy. Furthermore, {sup 27}Al nuclear magnetic resonance (NMR) studies were undertaken to probe the mechanism of solid-state amorphization. Ball milling leads to alloying, nanocrystallization and partial solid-state amorphization followed/accompanied by strain-induced nucleation of nanocrystalline intermetallic phases from an amorphous solid solution. Both these amorphous and nano-intermetallic phases are associated with characteristic NMR peaks at lower frequencies (than that of pure Al). Thus, mechanical alloying of Al-Ti-Si appears a suitable technique for developing nanocrystalline intermetallic phase/compound dispersed amorphous matrix composites.},

  doi          = {10.1016/j.actamat.2004.05.026},

  url          = {https://www.osti.gov/biblio/20634744},
  journal      = {Acta Materialia},

  issn         = {1359-6454},

  number       = 14,

  volume       = 52,

  place        = {United States},

  year         = {Mon Aug 16 00:00:00 EDT 2004},

  month        = {Mon Aug 16 00:00:00 EDT 2004}

}

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