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William L. Johnson
Researcher at California Institute of Technology
Publications - 540
Citations - 44431
William L. Johnson is an academic researcher from California Institute of Technology. The author has contributed to research in topics: Amorphous metal & Amorphous solid. The author has an hindex of 98, co-authored 536 publications receiving 42220 citations. Previous affiliations of William L. Johnson include Brooks Automation, Inc. & University of Southern California.
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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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Bulk Glass-Forming Metallic Alloys: Science and Technology
TL;DR: The MRS Medal was presented by William L. Johnson at the 1998 MRS Fall Meeting on December 2, 1998 as discussed by the authors, where Johnson received the honor for his development of bulk metallic glass-forming alloys, and the fundamental understanding of the thermodynamics and kinetics that control glass formation and crystallization of glassforming liquids.
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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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A universal criterion for plastic yielding of metallic glasses with a (T/Tg) 2/3 temperature dependence.
William L. Johnson,Konrad Samwer +1 more
TL;DR: Room temperature (TR) elastic constants and compressive yield strengths of approximately 30 metallic glasses reveal an average shear limit gammaC, where tauY=gamma CG is the maximum resolved shear stress at yielding, and G the shear modulus.