A Two-Stage Physical-Based Model for Predicting Flow Stress of As-cast TiAl Alloy Under Hot Deformation Conditions
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Materials Engineering and Performance"
DOI: 10.1007/s11665-018-3618-x
Abstract: The hot deformation behavior of Ti-30Al-4.2Mn-4.5Nb-0.2B alloy was investigated using the isothermal compression experiment at temperatures of 1020-1200 °C and strain rates of 0.001-1 s−1. The flow stress was sensitive to the deformation parameters like temperature and… read more here.
Keywords: hot deformation; model; stress; flow stress ... See more keywords
Hot Deformation Mechanisms of Ti22Al25Nb Orthorhombic Alloy
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Materials Engineering and Performance"
DOI: 10.1007/s11665-019-3858-4
Abstract: In this paper, the hot deformation behavior of Ti22Al25Nb was investigated by hot compression over a range of temperatures (950-1050 °C) and strain rates (0.001-1 s−1). Considering the adiabatic heating and friction, the original curves were corrected.… read more here.
Keywords: hot deformation; deformation; work hardening; flow stress ... See more keywords
Hot working characteristics of S32760 super duplex stainless steel
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-019-0511-y
Abstract: Hot deformation behavior of S32760 super austenitic stainless steel was studied in the temperature range of 950 ∼ 1250 °C and strain rate range of 0.1∼10 s-1 employing Gleeble 3800 equipment. The flow stress was… read more here.
Keywords: stainless steel; s32760 super; hot working; flow stress ... See more keywords
A new flow stress model based on Arrhenius equation to track hardening and softening behaviors of Ti6Al4V alloy
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DOI: 10.1007/s12598-017-0979-5
Abstract: The conventional Arrhenius-type model was adopted to identify the deformation characteristic of Ti6Al4V (TC4) titanium alloy based on the stress–strain curves of isothermal compression test. A new flow stress model based on Arrhenius equation was… read more here.
Keywords: model; stress; new flow; stress model ... See more keywords
A special notched tensile specimen to determine the flow stress-strain curve of hardening materials without applying the Bridgman correction
Sign Up to like & getrecommendations! Published in 2017 at "Engineering Fracture Mechanics"
DOI: 10.1016/j.engfracmech.2017.04.039
Abstract: Abstract Structural integrity assessment of weldments requires the input of flow stress-strain curve of each individual material zone. To cope with these challenges, a cylindrical cross weld tensile specimen with a notch located either in… read more here.
Keywords: tensile specimen; strain curve; stress; flow stress ... See more keywords
Constitutive modelling and processing map analysis of tungsten heavy alloy (92.5 W-5.25Ni-2.25Fe) at elevated temperatures
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Refractory Metals and Hard Materials"
DOI: 10.1016/j.ijrmhm.2018.06.009
Abstract: Abstract: Tungsten Heavy Alloys (WHA) are finding increasing applications in the kinetic energy penetrators. For developing the accurate simulation models of deformation processes on WHA, it is essential to properly understand the flow stress behavior… read more here.
Keywords: alloy; tungsten heavy; map; 25ni 25fe ... See more keywords
Dislocation density based model for Al-Cu-Mg alloy during quenching with considering the quench-induced precipitates
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2018.01.135
Abstract: Abstract The accurate prediction of residual stress for as-quenched Al-Cu-Mg alloy requires profound knowledge on the materials' constitutive behavior. In present work, the flow stress of as-quenched Al-Cu-Mg alloy is modelled using a dislocation density… read more here.
Keywords: alloy; dislocation density; model; density based ... See more keywords
Hot deformation behavior and flow stress modeling of a Ni-based superalloy
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DOI: 10.1016/j.matchar.2019.109915
Abstract: Abstract The deformation behavior of a novel Ni-based superalloy was investigated using isothermal compression on a Gleeble system at temperatures between 1050 and 1210 °C with strain rates between 0.001 and 0.1 s−1. Flow-stress curves and electron… read more here.
Keywords: deformation; deformation behavior; based superalloy; flow stress ... See more keywords
Flow stress model for hydrogen degraded Inconel 718
Sign Up to like & getrecommendations! Published in 2018 at "Mechanics of Materials"
DOI: 10.1016/j.mechmat.2018.01.007
Abstract: Abstract For life time estimation, it is desirable to capture the lowering of yield strength and premature failure that some alloys exhibits when subjected to hydrogen. For this, a mechanism based material model has been… read more here.
Keywords: hydrogen; model; stress model; flow stress ... See more keywords
Flow stress characterization of carbon steel S25C in the temperature range of cold forming with an emphasis on dynamic strain aging
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DOI: 10.1016/j.mtcomm.2021.102483
Abstract: Abstract In this study, a new material model for carbon steel S25C, which exhibits typical dynamic strain aging (DSA), is presented. We detail the development of a closed-form function model. The total flow stress is… read more here.
Keywords: flow stress; steel s25c; carbon steel; dynamic strain ... See more keywords
Influence of a Hydrostatic Pressure Shift on the Flow Stress in Sheet Metal
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DOI: 10.1016/j.promfg.2020.04.196
Abstract: Abstract The stack compression test (SCT) and the strain-rate controlled hydraulic bulge test (HBT) enable to determine the large strain flow curve of sheet metal under an identical deformation mode and balanced biaxial tension. This… read more here.
Keywords: stress; pressure shift; flow stress; hydrostatic pressure ... See more keywords