DEM modeling of shear bands in crushable and irregularly shaped granular materials
Sign Up to like & getrecommendations! Published in 2017 at "Granular Matter"
DOI: 10.1007/s10035-017-0712-y
Abstract: A method of modeling convex or concave polygonal particles is proposed. DEM simulations of shear banding in crushable and irregularly shaped granular materials are presented in this work. Numerical biaxial tests are conducted on an… read more here.
Keywords: crushable irregularly; irregularly shaped; granular materials; shaped granular ... See more keywords
Investigating the compressive strength and strain localization of nanotwinned nickel alloys
Sign Up to like & getrecommendations! Published in 2021 at "Acta Materialia"
DOI: 10.1016/j.actamat.2020.116507
Abstract: Abstract Sputter deposited nickel-molybdenum-tungsten (Ni-Mo-W) thin films possess a beneficial suite of properties that stem from the extremely fine growth twins that form during the deposition process. Previously these materials were only characterized in tension,… read more here.
Keywords: post mortem; investigating compressive; compressive strength; strain ... See more keywords
Enhanced strain delocalization through formation of dispersive micro shear bands in laminated Ni
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Plasticity"
DOI: 10.1016/j.ijplas.2020.102745
Abstract: Abstract Nanocrystalline metals usually exhibit limited ductility due to catastrophic shear fracture caused by the preferential formation of a few premature shear bands during tensile deformation. In this work, the tensile and fracture behavior of… read more here.
Keywords: soft layers; fracture; micro shear; grain ... See more keywords
In situ study of the shear band features of a CuZr-based bulk metallic glass composite
Sign Up to like & getrecommendations! Published in 2019 at "Intermetallics"
DOI: 10.1016/j.intermet.2019.106523
Abstract: Abstract To understand the shear banding evolution and the effect of individual shear band on deformation mechanisms of bulk metallic glass composites (BMGCs), tensile tests of CuZrAlNb BMGCs have been in situ studied. It is… read more here.
Keywords: bulk metallic; shear band; metallic glass; shear bands ... See more keywords
Diffusion assisted interaction of shear bands in metallic glasses
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2019.153327
Abstract: Abstract Shear bands were formed at room temperature in Zr44Ti11Cu10Ni10Be25 bulk metallic glass subjected to torsional deformation. Shear offset distribution was determined quantitatively for intersecting bands and compared to an elastic continuum shear defect model… read more here.
Keywords: diffusion assisted; assisted interaction; interaction shear; interaction ... See more keywords
Experimental studies of shear bands in Zr-Cu metallic glass
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Non-crystalline Solids"
DOI: 10.1016/j.jnoncrysol.2018.01.009
Abstract: Abstract Shear bands are the key feature that control deformation in bulk metallic glasses (BMGs). This study provides a comprehensive analysis of plastic deformation of a Zr-Cu-based BMG at room temperature. Experiments were conducted to… read more here.
Keywords: metallic glass; studies shear; deformation; experimental studies ... See more keywords
Evolution of shear bands and cracks in multi-stage triaxial tests with water-saturated sandstone: A study of micro-tectonics with a fractal perspective
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Structural Geology"
DOI: 10.1016/j.jsg.2020.104092
Abstract: Abstract A series of multi-stage triaxial compression tests revealed quite chaotic reactions of water-saturated Permotriassic sandstones on changing pore water pressures. Not before focussing the various test stages with respect to occurring critical phenomena, which… read more here.
Keywords: multi stage; water; stage triaxial; tectonics ... See more keywords
HPT-induced shear banding and nanoclustering in a TiNiCu amorphous alloy
Sign Up to like & getrecommendations! Published in 2017 at "Materials Letters"
DOI: 10.1016/j.matlet.2017.08.028
Abstract: Abstract Special TEM procedure is used to study in detail the microstructure of the melt-spun (MS) amorphous alloy Ti50Ni25Cu25 subjected to high-pressure torsion (HPT). The cross section of an HPT-processed disc-shaped sample is studied. Groups… read more here.
Keywords: hpt induced; alloy; hpt; hpt processed ... See more keywords
Hardened core of bilayer shear bands in a Zr-based metallic glass
Sign Up to like & getrecommendations! Published in 2021 at "Materials Letters"
DOI: 10.1016/j.matlet.2020.129242
Abstract: Abstract Bilayer shear bands with a spacing of hundreds of nanometers were prepared in a Zr-based metallic glass. Elastic properties of the bands were detected using a contact-resonance atomic force microscope. Compare with an elastic… read more here.
Keywords: based metallic; core bilayer; metallic glass; bilayer shear ... See more keywords
Slip lines versus shear bands: Two competing localization modes
Sign Up to like & getrecommendations! Published in 2021 at "Mechanics Research Communications"
DOI: 10.1016/j.mechrescom.2020.103603
Abstract: Abstract Granular materials can develop two different failure modes following their initial density and the loading path: a localized mode, generally characterized by shear bands, and a diffuse mode without any macroscopic localized bands. In… read more here.
Keywords: bands two; slip lines; lines versus; shear bands ... See more keywords
Morphology of cracks and shear bands in polymer-supported thin film metallic glasses
Sign Up to like & getrecommendations! Published in 2021 at "Materials today communications"
DOI: 10.1016/j.mtcomm.2021.102547
Abstract: Abstract Here we provide a systematic study of tensile deformation mechanisms in PdSi metallic glasses employing polymer-supported sputter deposited films. Due to the polymer substrate, global strain localization within one critical shear band is inhibited… read more here.
Keywords: plane shear; polymer supported; shear bands; strain ... See more keywords