2

Analysis and design of dual-phase steel microstructure for enhanced ductile fracture resistance

The goal of this paper is to predict how the properties of the constituent phases and microstructure of dual phase steels (consisting of ferrite and martensite) influence their fracture resistance. We focus on two commercial low-carbon dual-phase …

On a dislocation-based constitutive model and dynamic thermomechanical considerations

© 2018 Elsevier Ltd. Dislocation-based constitutive models are widely used to predict the plastic behavior of metallic materials, in both quasi-static and dynamic conditions. In addition, if the ratio of (adiabatic) thermomechanical (plastic work to …

Orientation-Dependent Tensile Behavior of Nanolaminated Graphene-Al Composites: An In Situ Study

We conducted in situ microtension experiments in a scanning electron microscope (SEM) to study the orientation-dependent mechanical behavior of nanolaminated graphene-Al composite. We found a transition from a weak-and-brittle behavior in the …

Random distributions of initial porosity trigger regular necking patterns at high strain rates

© 2018 The Author(s) Published by the Royal Society. All rights reserved. At high strain rates, the fragmentation of expanding structures of ductile materials, in general, starts by the localization of plastic deformation in multiple necks. Two …

Sensitivity of Arterial Hyperelastic Models to Uncertainties in Stress-Free Measurements

Despite major advances made in modeling vascular tissue biomechanics, the predictive power of constitutive models is still limited by uncertainty of the input data. Specifically, key measurements, like the geometry of the stress-free (SF) state, …

Thermo-mechanical characterization and dynamic failure of near $α$ and near $β$ titanium alloys

This paper investigates the thermo-mechanical response and failure behaviour of near $β$ Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511) and near $α$ Ti3Al2.5 V alloy under high strain rate loading. A series of dynamic compression and shear compression tests have …

Engineering the crack path by controlling the microstructure

© 2016 Elsevier Ltd We explore the possibility of engineering the crack path by controlling a material's microstructure in order to increase its crack growth resistance. Attention is confined to a specific type of microstructure that is encountered …

Mechanical Characterization of Impact-Induced Dynamically Recrystallized Nanophase

© 2017 American Physical Society. Dynamic failure of impact-loaded structures is often caused by dynamic shear localization, that is also known as adiabatic shear banding (ASB). While ASB has long been thought to be triggered by thermal softening, …

The dependence of the Taylor–Quinney coefficient on the dynamic loading mode

© 2017 Elsevier Ltd The efficiency of the thermomechanical conversion, expressed as the Taylor–Quinney coefficient (TQC) is seldom reported in the literature and generally assumed to be equal to 0.9. Moreover, an eventual dependence of this …

The genesis of adiabatic shear bands

Adiabatic shear banding (ASB) is a unique dynamic failure mechanism that results in an unpredicted catastrophic failure due to a concentrated shear deformation mode. It is universally considered as a material or structural instability and as such, …