The evolving landscape for alloy design

Pollock, Tresa M.; Ven, Anton Van der

doi:10.1557/mrs.2019.69

Cited by 22 publications

(14 citation statements)

References 114 publications

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“…While in the literature there are disagreements as far as specific aspects of this cutting process are concerned, SX researchers from academia and industry believe that it is desirable to design alloys with a high c& -volume fraction, a high c& -solvus temperature and a chemical composition, which gives rise to high planar fault energies which affect the physical nature of APBs and stacking faults. The c&solvus temperature has been considered as especially important and has been highlighted as a reference temperature in many scientific and technological SX publications, e.g., [24][25][26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Thermoelastic properties and γ’-solvus temperatures of single-crystal Ni-base superalloys

et al. 2021

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The present work shows that thermal expansion experiments can be used to measure the γʼ-solvus temperatures of four Ni-base single-crystal superalloys (SX), one with Re and three Re-free variants. In the case of CMSX-4, experimental results are in good agreement with numerical thermodynamic results obtained using ThermoCalc. For three experimental Re-free alloys, the experimental and calculated results are close. Transmission electron microscopy shows that the chemical compositions of the γ- and the γʼ-phases can be reasonably well predicted. We also use resonant ultrasound spectroscopy (RUS) to show how elastic coefficients depend on chemical composition and temperature. The results are discussed in the light of previous results reported in the literature. Areas in need of further work are highlighted. Graphical abstract

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Section: Introductionmentioning

confidence: 99%

Thermoelastic properties and γ’-solvus temperatures of single-crystal Ni-base superalloys

et al. 2021

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“…The rapid pace of advances in manufacturing technologies across multiple industries requires significant enhancements in the performance of engineering materials, such as metals with mechanical properties that exceed those of traditional alloys. [22,23] Yet, materials that are suitable for AM are limited. For instance, it is estimated that merely 0.2% of commercial metallic alloys are printable.…”

Section: Homogeneous Materials Design For Ammentioning

confidence: 99%

“…For instance, it is estimated that merely 0.2% of commercial metallic alloys are printable. [22,24] This statistic emphasizes the need for robust computational tools that can aid in the design of alloys that are suitable for the AM process. Efforts in computational materials design have been successful in screening promising new stable materials via density functional theory (DFT) and molecular dynamics (MD) simulations.…”

Section: Homogeneous Materials Design For Ammentioning

confidence: 99%

Data‐Driven Approaches Toward Smarter Additive Manufacturing

Tian

Bustillos

et al. 2021

Advanced Intelligent Systems

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The latest industrial revolution, Industry 4.0, is driven by the emergence of digital manufacturing and, most notably, additive manufacturing (AM) technologies. The simultaneous material and structure forming in AM broadens the material and structural design space. This expanded design space holds a great potential in creating improved engineering materials and products that attract growing interests from both academia and industry. A major aspect of this growing interest is reflected in the increased adaptation of data‐driven tools that accelerate the exploration of the vast design space in AM. Herein, the integration of data‐driven tools in various aspects of AM is reviewed, from materials design in AM (i.e., homogeneous and composite material design) to structure design for AM (i.e., topology optimization). The optimization of AM tool path using machine learning for producing best‐quality AM products with optimal material and structure is also discussed. Finally, the perspectives on the future development of holistically integrated frameworks of AM and data‐driven methods are provided.

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“…[55] This also poses a major barrier to the early stages of alloy design for AM, in that the conventional approach of synthesizing a suite of promising compositions for subsequent characterization and property measurements becomes cost prohibitive. This motivates an integrated computational materials engineering (ICME) approach [56][57][58] for the design of alloy powders for AM.…”

Section: A Role Of Powdersmentioning

confidence: 99%

Design and Tailoring of Alloys for Additive Manufacturing

Pollock

Clarke

Babu

2020

Metall Mater Trans A

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Additive manufacturing (AM) promises a major transformation for manufacturing of metallic components for aerospace, medical, nuclear, and energy applications. This perspective paper addresses some of the opportunities for alloy and feedstock design to achieve site-specific and enhanced properties not attainable by conventional manufacturing processes. This paper provides a brief overview of the role of powders, as well as solidification and solid-state phase transformation phenomena typically encountered during fusion-based AM. Three case studies are discussed that leverage the above to arrive at microstructure control. The first case study focuses on approaches to modify the solidification characteristics by in-situ alloying. The second case study focuses on the need for concurrent design of alloys and processing conditions to arrive at the columnar to equiaxed transition during solidification. The third case study focuses on the design of a cobalt alloy for AM, with emphasis on tailoring liquid and solid state phase transformations. The need for comprehensive knowledge of processing conditions during AM, in-situ and ex-situ probing of microstructure development under AM conditions, and post-print processing, characterization, and qualification are articulated for the design of future alloys and component geometries built by AM.

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The evolving landscape for alloy design

Abstract: Abstract

Cited by 22 publications

References 114 publications

Thermoelastic properties and γ’-solvus temperatures of single-crystal Ni-base superalloys

Thermoelastic properties and γ’-solvus temperatures of single-crystal Ni-base superalloys

Data‐Driven Approaches Toward Smarter Additive Manufacturing

Design and Tailoring of Alloys for Additive Manufacturing

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