Anomalous Strain Rate Sensitivity of Flow Stress in Ni3Ge Single Crystals. The role of Point Defects
Sign Up to like & getrecommendations! Published in 2017 at "Russian Physics Journal"
DOI: 10.1007/s11182-017-1099-2
Abstract: The paper considers the strain rate sensitivity of flow stress in Ni3Ge single crystals having high-energy antiphase boundaries detected in experiments for the strain rate variation. The concentration of point defects is estimated by the… read more here.
Keywords: point defects; rate sensitivity; sensitivity flow; strain rate ... See more keywords
Fracture Characterization of Rolled Sheet Alloys in Shear Loading: Studies of Specimen Geometry, Anisotropy, and Rate Sensitivity
Sign Up to like & getrecommendations! Published in 2017 at "Experimental Mechanics"
DOI: 10.1007/s11340-016-0211-9
Abstract: Two different shear sample geometries were employed to investigate the failure behaviour of two automotive alloy rolled sheets; a highly anisotropic magnesium alloy (ZEK100) and a relatively isotropic dual phase steel (DP780) at room temperature.… read more here.
Keywords: strain; geometry; rate sensitivity; fracture ... See more keywords
Analysis of Strain Rate Sensitivity and Strain Rate Hardening in Co–Cr–Ni–Mo Wires Drawn with Different Drawing Practices
Sign Up to like & getrecommendations! Published in 2019 at "Metals and Materials International"
DOI: 10.1007/s12540-019-00239-w
Abstract: This study investigates the effect of strain rate (SR) on the strain rate sensitivity (SRS), strain rate work hardening (SRWH) in Co–35Ni–20Cr–10Mo alloy (MP35N) wires, subjected to drawing practices namely full die drawing (FDD) and… read more here.
Keywords: drawn wire; rate sensitivity; strain rate; rate ... See more keywords
Construction of Constitutive Model and Strain-Rate Sensitivity Coefficient Distribution Map of Ti2AlNb
Sign Up to like & getrecommendations! Published in 2020 at "Metals and Materials International"
DOI: 10.1007/s12540-020-00645-5
Abstract: The hot deformation behavior of Ti–22Al–25Nb was studied by the high temperature compression over a range of temperatures (950–1050 °C) and strain rates (0.001–10 s−1) in this paper. The work-hardening (WH) and softening deformation behaviors… read more here.
Keywords: rate sensitivity; strain rate; sensitivity coefficient; rate ... See more keywords
Negative Strain Rate Sensitivity in Two-Phase Nanocrystalline CoCrFeMnNi High-Entropy Alloy with Broader Grain Size Distribution Studied by Nanoindentation
Sign Up to like & getrecommendations! Published in 2019 at "Transactions of the Indian Institute of Metals"
DOI: 10.1007/s12666-019-01762-5
Abstract: Two-phase microstructure was realized in CoCrFeMnNi system using a combination of ball milling and spark plasma sintering at 1273 K. Microstructure consisted of finer average grain size with broader grain size distribution, complex solid solution… read more here.
Keywords: phase; rate sensitivity; negative strain; strain rate ... See more keywords
Dislocation slip transmission through a coherent Σ3{111} copper twin boundary: Strain rate sensitivity, activation volume and strength distribution function
Sign Up to like & getrecommendations! Published in 2018 at "Acta Materialia"
DOI: 10.1016/j.actamat.2018.09.045
Abstract: Abstract We present the first measurement of the strain rate sensitivity of the ideal dislocation slip transmission through a coherent Σ3{111} copper twin boundary. For this purpose we have deformed 129 geometrically identical samples at… read more here.
Keywords: slip; transmission; rate sensitivity; strain rate ... See more keywords
Microstructure and strain rate sensitivity behavior of SM490 structural steel weld zone investigated using indentation
Sign Up to like & getrecommendations! Published in 2019 at "Construction and Building Materials"
DOI: 10.1016/j.conbuildmat.2019.02.013
Abstract: Abstract In this study, a series of optical microscope examinations, constant loading rate indentation (CLR), and creep indentation (CI) tests were performed on room temperature to investigate the strain rate sensitivity behavior of the SM490… read more here.
Keywords: indentation; rate sensitivity; rate; weld zone ... See more keywords
Constitutive characterization of a rare-earth magnesium alloy sheet (ZEK100-O) in shear loading: Studies of anisotropy and rate sensitivity
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Mechanical Sciences"
DOI: 10.1016/j.ijmecsci.2017.04.013
Abstract: Abstract Rare-earth magnesium alloys such as ZEK100-O offer improved ductility over other conventional magnesium alloys at room temperature; however, they exhibit significant anisotropy and complex yield behaviour. In this work, a systematic investigation of anisotropy… read more here.
Keywords: shear loading; zek100; rate sensitivity; rare earth ... See more keywords
Simple estimation method for strain rate sensitivity based on the difference between the indentation sizes formed by spherical-shaped impactors
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Mechanical Sciences"
DOI: 10.1016/j.ijmecsci.2020.106007
Abstract: Abstract The Johnson-Cook (JC) flow stress model is widely used in finite element analysis (FEA) in various fields to express the deformation behavior of metallic materials under high strain rate conditions. There is a need… read more here.
Keywords: rate sensitivity; indentation; method; strain rate ... See more keywords
Cyclic deformation induced strengthening and unusual rate sensitivity in Cu/Ru nanolayered films
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Plasticity"
DOI: 10.1016/j.ijplas.2017.08.005
Abstract: Abstract In this work, we have systematically investigated the effect of cyclic deformation on the strength and rate sensitivity of Cu/Ru multilayers with different individual layer thickness ( h ) by nanoindentation tests. It was… read more here.
Keywords: deformation induced; cyclic deformation; deformation; rate sensitivity ... See more keywords
Evaluating and modeling rate sensitivity in advanced reactor structural materials: 316H, Gr. 91, and A617
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Pressure Vessels and Piping"
DOI: 10.1016/j.ijpvp.2019.103997
Abstract: Abstract Advanced reactor systems operate at high temperatures to achieve better thermal efficiency. During transients from lower temperatures to high operating temperatures structural metals transition from rate insensitive behavior to rate dependent behavior. In the… read more here.
Keywords: advanced reactor; rate sensitivity; rate insensitive; rate ... See more keywords