Microstructure and mechanical properties of laser melting deposited γ-TiAl intermetallic alloys

Qu, H.P.; Wang, H.M.

doi:10.1016/j.msea.2007.02.073

Cited by 93 publications

(26 citation statements)

References 24 publications

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“…to produce Ti-Al coatings have been developed in the last decade: thin-film deposition [40,41], ion implantation [42], and laser melting deposition [43]. In [14,15], the pulsed liquid-phase mixing of Ti substrate with predeposited Al film was firstly used to fabricate Ti 3 Al/TiAl-based surface alloys.…”

Section: Synthesis and Characterization Of Timentioning

confidence: 99%

Surface Modification and Alloying of Aluminum and Titanium Alloys with Low-Energy, High-Current Electron Beams

Ротштейн

Шулов

2011

Journal of Metallurgy

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The paper reviews the results of investigations of surface modification and alloying of Al, Ti, and its alloys with a low-energy (up to ∼40 keV), high-current (up to 25 J/cm 2 ) electron beams of microsecond duration under systematically varied conditions. The microstructural evolution of the surface layers of Al alloys (Al2024 and Al6061) and Ti-6Al-4V alloy subjected to pulsed melting as well as changes in surface-sensitive properties of these alloys are considered. Phase formation and properties of Albased and Ti-based surface alloys, synthesized by liquid-phase mixing of multilayer film-substrate systems in wide range of solid solubility, including [Al/Si]/Al, [Al/C]/Al, [Zr/Ti]/Ti-6Al-4V, and Al/Ti, are studied. In case of Ti-based substrates, this method allows to fabricate the single-phase nanocrystalline α-(TiZr) surface alloy, free of Al and V, as well as nanosized and ultrafine grain TiAl/Ti 3 Al-based surface alloys of thickness ≥3 μm with enhanced mechanical properties.

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Section: Synthesis and Characterization Of Timentioning

confidence: 99%

Surface Modification and Alloying of Aluminum and Titanium Alloys with Low-Energy, High-Current Electron Beams

Ротштейн

Шулов

2011

Journal of Metallurgy

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“…For the stoichiometric binary TiAl alloy, sequential laser remelting tends to create the directional growth of metastable γ phase with (111) plane perpendicular to the thermal gradient direction 11 . Qu et al investigated the phase transformation for the Ti-47Al-2.5V-1Cr alloy manufactured by LMD 12 . A directionally solidified columnar grain structure was formed in the deposition direction due to the high temperature gradient.…”

Section: ° Lmd or Cladding Processmentioning

confidence: 99%

The prospects for additive manufacturing of bulk TiAl alloy

Thomas

Malot

Aubry

et al. 2016

Materials at High Temperatures

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“…LMD is a rapid forming technology for building metallic components. The laser deposited metal parts have a fine microstructure, and mechanical properties of the laser deposited parts are usually comparable or even superior to the forged materials [1,2]. In the last decade, the nanocomposites have become very popular because of their high toughness and stiffness along with superior hardness.…”

Section: Introductionmentioning

confidence: 99%

Influence of Y2O3-SiC-Mo and Ce-Al-Ni amorphous alloy on laser melting deposition stellite matrix composites

Li¹,

Ma²,

Tang³

et al. 2016

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Nanostructured catalytic powders (NCP) were used to produce the laser melting deposition (LMD) amorphous-nanocrystalline composite coatings on titanium alloy. With amorphous alloy addition, amorphous surrounded nanoscale polycrystals (ASNP) and amorphous surrounded one-dimensional nanocrystals (ASON) were produced. A composite coating was fabricated by LMD of the Stellite 6-TiB2 mixed powders on a TA15 alloy. Scanning Electron Microscope (SEM) test results indicated that with Y2O3-SiC-Mo addition, an LMD amorphous-nanocrystalline composite coating was obtained. The addition of the Ce-Al-Ni amorphous alloy led a micro-nano structure LMD coating to be produced. This research provided essential theoretical and experimental basis to promote the application of LMD technique in the modern aviation industry.K e y w o r d s : catalytic powders, amorphous materials, nanomaterials, polycrystals, lasers

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Microstructure and mechanical properties of laser melting deposited γ-TiAl intermetallic alloys

Cited by 93 publications

References 24 publications

Surface Modification and Alloying of Aluminum and Titanium Alloys with Low-Energy, High-Current Electron Beams

Surface Modification and Alloying of Aluminum and Titanium Alloys with Low-Energy, High-Current Electron Beams

The prospects for additive manufacturing of bulk TiAl alloy

Influence of Y2O3-SiC-Mo and Ce-Al-Ni amorphous alloy on laser melting deposition stellite matrix composites

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