The coupled zone of rapidly solidified AlSi alloys in laser treatment

Pierantoni, M.; Gremaud, M.; Magnin, P; Stoll, Derek; Kurz, W.

doi:10.1016/0956-7151(92)90106-o

Cited by 118 publications

(35 citation statements)

References 16 publications

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“…During cooling this liquid, which consists of Al with 12 wt.% Si, solidifies as primary α-Al dendrites and α-Al + Si eutectic, instead of the fully eutectic microstructure predicted by the Al-Si equilibrium diagram for this composition. This non-equilibrium microstructure has been previously observed in laser processed Al-Si eutectic alloys [22,23] and can be explained by the coupled zone theory. In a phase diagram the coupled zone represents the ranges of composition and temperature where the liquid solidifies by a eutectic reaction.…”

Section: Discussionmentioning

confidence: 59%

Microstructure and wear studies of laser clad Al-Si/SiC(p) composite coatings

Anandkumar

Almeida

Colaço

et al. 2007

Surface and Coatings Technology

106

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Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. and Si increase the hardness of the material by dispersion hardening but do not contribute to its abrasive wear resistance, because they are softer than the abrasive particles, and confirm that the parameters used to prepare Al-Si-SiC composite coatings by laser cladding must be selected so that only minimal reactions occur between SiC and molten Al.

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Section: Discussionmentioning

confidence: 59%

Microstructure and wear studies of laser clad Al-Si/SiC(p) composite coatings

Anandkumar

Almeida

Colaço

et al. 2007

Surface and Coatings Technology

106

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“…Without the primary silicon particles melting, the composition of the residual melt is likely to become close to the eutectic composition. For the Al-Si binary system, it is well known that the coupled growth zone is skewed to Si-side, 23,24) and the domain that the -phase is able to nucleate as a primary phase exists even in the hyper-eutectic composition. Therefore, it is considered that the -phase nucleated and grew into dendrites in the melt by quenching.…”

Section: Resultsmentioning

confidence: 99%

Effect of the Intensity and Frequency of Electromagnetic Vibrations on Refinement of Primary Silicon in Al-17%Si Alloy

et al. 2004

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Electromagnetic vibrations, which are the interaction between a static magnetic field and an alternating electric field, were applied to the structural refinement of Al-17%Si hyper-eutectic alloy. The relationship between the intensity and frequency of the electromagnetic vibrations and the refinement of primary silicon particles is quantitatively investigated. In the frequency range from 10 Hz to 30 kHz, the vibration frequency near 1 kHz was most effective for the refinement of silicon particles, and silicon particles of sizes up to approximately 5 mm were refined at that frequency. The level of refinement increased with increasing the intensity of electromagnetic vibrations. A primary silicon particle was sufficiently refined with a magnetic field intensity of only approximately 1.6 Tesla (T).

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“…These parameters were substituted into equations (6,7) to get constants Kr and KC. Then Kr and Kc were substituted into equations (11,12,13) to obtain constantl=6.89x10-7 mm3/s, constant2=8.9x10-3 mmK.…”

Section: CDmentioning

confidence: 99%

Microstructural development of rapid solidification in Al-Si powder

Jin

1995

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The coupled zone of rapidly solidified AlSi alloys in laser treatment

Cited by 118 publications

References 16 publications

Microstructure and wear studies of laser clad Al-Si/SiC(p) composite coatings

Microstructure and wear studies of laser clad Al-Si/SiC(p) composite coatings

Effect of the Intensity and Frequency of Electromagnetic Vibrations on Refinement of Primary Silicon in Al-17%Si Alloy

Microstructural development of rapid solidification in Al-Si powder

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