Development of tough, low-density titanium-based bulk metallic glass matrix composites with tensile ductility
Douglas C. Hofmann,Jin-Yoo Suh,Aaron Wiest,Mary Laura Lind,Marios D. Demetriou,William L. Johnson +5 more
TLDR
This work presents a series of low-density, Ti-based BMG composites with combinations of high strength, tensile ductility, and excellent fracture toughness.Abstract:
The mechanical properties of bulk metallic glasses (BMGs) and their composites have been under intense investigation for many years, owing to their unique combination of high strength and elastic limit. However, because of their highly localized deformation mechanism, BMGs are typically considered to be brittle materials and are not suitable for structural applications. Recently, highly-toughened BMG composites have been created in a Zr–Ti-based system with mechanical properties comparable with high-performance crystalline alloys. In this work, we present a series of low-density, Ti-based BMG composites with combinations of high strength, tensile ductility, and excellent fracture toughness.read more
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Bulk Metallic Glasses
C. Suryanarayana,Akihisa Inoue +1 more
TL;DR: In this paper, the concepts of glass formation and formation by non-solidification methods have been discussed, with a focus on the formation of bulk metallic glass, and a review of the literature on the properties of these materials.
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Bulk Metallic Glass Composites with Transformation‐Mediated Work‐Hardening and Ductility
TL;DR: A BMG composite that exhibits large tensile ductility with signifi cant work-hardening capability is reported, which offers a new paradigm for developing BMGs with improved ductility as practical engineering materials.
Journal ArticleDOI
Metallic glass matrix composites
TL;DR: In this article, the development, fabrication, microstructures, and properties of MGMCs, including the room-temperature, cryogenictemperature and hightemperature mechanical properties upon quasi-static and dynamic loadings are reviewed.
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The fracture of bulk metallic glasses
Baoan Sun,Weihua Wang +1 more
TL;DR: A comprehensive view of the state-of-the-art research on various aspects of the fracture of bulk metallic glasses, including fracture behavior and characteristics, fracture mode, fracture criterion, fracture toughness, and fracture morphology, is presented in this article.
Journal ArticleDOI
Formation of Cu-Zr-Al bulk metallic glass composites with improved tensile properties
Yuan Wu,Huiyuan Wang,Hong-Hui Wu,Z.Y. Zhang,Xidong Hui,G.L. Chen,Dong Ma,Xun-Li Wang,Zhaoping Lu +8 more
TL;DR: In this paper, the dependence of microstructure on the alloy composition and cooling rate of a series of (Zr0.5Cu 0.5)100−xAlx was investigated in detail and explained in the framework of time-temperature-transformation diagrams.
References
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A highly processable metallic glass: Zr41.2Ti13.8Cu12.5Ni10.0Be22.5
Atakan Peker,William L. Johnson +1 more
TL;DR: In this article, the properties of a new family of metallic alloys which exhibit excellent glass forming ability are reported, where the critical cooling rate to retain the glassy phase is of the order of 10 K/s or less.
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Microstructure controlled shear band pattern formation and enhanced plasticity of bulk metallic glasses containing in situ formed ductile phase dendrite dispersions
TL;DR: Under unconstrained mechanical loading organized shear band patterns develop throughout the sample, which results in a dramatic increase in the plastic strain to failure, impact resistance, and toughness of the metallic glass.
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Designing metallic glass matrix composites with high toughness and tensile ductility
Douglas C. Hofmann,Jin-Yoo Suh,Aaron Wiest,Gang Duan,Mary Laura Lind,Marios D. Demetriou,William L. Johnson +6 more
TL;DR: T titanium–zirconium-based BMG composites with room-temperature tensile ductility exceeding 10 per cent, yield strengths of 1.2–1.5 GPa, K1C up to ∼170 MPa m1/2, and fracture energies for crack propagation as high as G1C ≈ 340 kJ’m-2.2 were reported.
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Crack deflection at an interface between dissimilar elastic-materials
M.Y. He,John W. Hutchinson +1 more
TL;DR: In this paper, the authors examined the competition between deflection and penetration when the materials on either side of the interface are elastic and isotropic and determined the range of interface toughness relative to bulk material toughness which ensures that cracks will be deflected into the interface.
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Novel Ti-base nanostructure-dendrite composite with enhanced plasticity.
TL;DR: This work presents a new in situ-formed nanostructured matrix/ductile dendritic phase composite microstructure for Ti-base alloys, which exhibits up to 14.5% compressive plastic strain at room temperature.