Laser solid forming Zr-based bulk metallic glass

Yang, Guiling; Lin, Xin; Liu, Fencheng; Hu, Qiao; Ma, Lifeng; Li, Jin-Fu; Huang, Weidong

doi:10.1016/j.intermet.2011.10.008

Cited by 117 publications

(53 citation statements)

References 15 publications

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“…Therefore, the most parts of the deposited layer experience a single laser reheating cycle and the overlapping zone between the adjacent deposited layers and tracks undergo two or three laser reheating cycles. The LSM results indicate that the HAZ can maintain the amorphous state after remelting four times, which implies that the crystallization in the HAZ of the overlapping zone can be avoided during LSF [9]. However, by comparing the microstructure characteristics of Zr 55 Cu 30 Al 10 Ni 5 BMGs during LSM and LSF, both NiZr 2 -type phase and Cu 10 Zr 7 dendrites exist in the deposit using LSF.…”

Section: Discussionmentioning

confidence: 96%

“…Balla et al [8] also deposited bulk cylindrical samples using LSF with FeeCreMoeWeMneCeSieB fine and coarse powders, and the incomplete melting of the coarse powder during laser deposition restricted the formation of a fully amorphous structure. Yang et al [9] investigated the crystallization behavior of Zr 55 Cu 30 Al 10 Ni 5 BMGs prepared by LSF with the pre-laid powder method and proposed a physical model to describe the LSF of BMGs. Recently, Ye et al [10] determined that there was a large fraction of amorphous structure in the FeeCreMoeWeCeMneSieB BMGs cylinder, which was 10 mm in diameter and prepared by LSF using the powder blown method, when a 5-s interval was added to allow the already-deposited layers to cool prior to depositing subsequent tracks and layers.…”

Section: Introductionmentioning

confidence: 99%

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Microstructural analysis of Zr55Cu30Al10Ni5 bulk metallic glasses by laser surface remelting and laser solid forming

et al. 2015

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Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Microstructural analysis of Zr55Cu30Al10Ni5 bulk metallic glasses by laser surface remelting and laser solid forming

et al. 2015

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“…Although laser processing technology has been extensively applied to MG alloys in previous studies, the work has been focused mainly on the manufacturing of threedimensional BMG parts and the modification of surface structure and properties. [20][21][22][23][24][25][26][27][28][29] Similar to vapor deposition, we show that laser deposition also has the capability to fabricate continuously graded composition libraries, but has the added benefit of producing atomic structures that are more representative of cast MG specimens.…”

Section: Introductionmentioning

confidence: 99%

A Laser Deposition Strategy for the Efficient Identification of Glass-Forming Alloys

Tsai

Flores

2015

Metall Mater Trans A

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Compositionally graded Cu-Zr specimens covering a wide composition range (30 to 60 at. pct Zr) were fabricated by direct laser deposition. By observing the surface topography of the as-fabricated specimens with differential interference contrast microscopy, primarily amorphous regions corresponding to compositions of high glass-forming ability were rapidly identified. Electron diffraction results confirmed the relationship between surface topography and atomic structure. The compositional widths of the amorphous regions were observed to narrow with increasing heat input from the laser, enabling further identification of local maxima in the glassforming landscape of Cu-Zr alloys. In this work, we report two peaks in the glass-forming ability, located at Cu 64.7 Zr 35.3 and Cu 50.2 Zr 49.8 . These two compositions find excellent agreement with previously reported results based on casting of discrete compositions.

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“…This Aluminum foil wrapped toffee is placed in horizontal slot in the water cooled copper hearth of furnace at appropriate time after which, it is melted to get solid chuck/button for subsequent research. During second approach, casted wedge samples were subjected to laser solid forming (LSF) [66] in Additive Manufacturing setup. Model theory was developed and tailored to describe microstructure evolution during both processes.…”

Section: Methodsmentioning

confidence: 99%

Simulation of Solidification Parameters during Zr Based Bulk Metallic Glass Matrix Composite’s (BMGMCs) Additive Manufacturing

Rafique¹

2018

ENG

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After a silence of three decades, bulk metallic glasses and their composites have re-emerged as a competent engineering material owing to their excellent mechanical properties not observed in any other engineering material known till date. However, they exhibit poor ductility and little or no toughness which make them brittle and they fail catastrophically under tensile loading. Exact explanation of this behaviour is difficult, and a lot of expensive experimentation is needed before conclusive results could be drawn. In present study, a theoretical approach has been presented aimed at solving this problem. A detailed mathematical model has been developed to describe solidification phenomena in zirconium based bulk metallic glass matrix composites during additive manufacturing. It precisely models and predicts solidification parameters related to microscale solute diffusion (mass transfer) and capillary action in these rapidly solidifying sluggish slurries. Programming and simulation of model is performed in MATLAB ® . Results show that the use of temperature dependent thermophysical properties yields a synergic effect for multitude improvement and refinement simulation results. Simulated values proved out to be in good agreement with prior simulated and experimental results.

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Laser solid forming Zr-based bulk metallic glass

Cited by 117 publications

References 15 publications

Microstructural analysis of Zr55Cu30Al10Ni5 bulk metallic glasses by laser surface remelting and laser solid forming

Microstructural analysis of Zr55Cu30Al10Ni5 bulk metallic glasses by laser surface remelting and laser solid forming

A Laser Deposition Strategy for the Efficient Identification of Glass-Forming Alloys

Simulation of Solidification Parameters during Zr Based Bulk Metallic Glass Matrix Composite’s (BMGMCs) Additive Manufacturing

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