Rheological similarity of metals and alloys

Shlomchack, G.G.; Mamuzić, Ilija; Vodopivec, F.

doi:10.1016/0924-0136(94)90458-8

Cited by 13 publications

(4 citation statements)

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“…A significant increase in the flow stress at a strain greater than 0.4, registered for all three alloys but only for the deformation temperature equal to 150 °C and a strain rate of 0.5 s -1 , can be related to the temperature characteristic of the friction between the samples and loading plates. Alternatively, this effect can be explained using the theory of rheologically complex materials developed by Shlomchak et al in [35,36]. A deeper analysis of this effect requires additional studies.…”

Section: Extruded Materialsmentioning

confidence: 99%

Mechanical properties, crystallographic texture, and in vitro bio-corrosion of low-alloyed Zn–Mg, produced by hot and cold drawing for biodegradable surgical wires

Milenin

Wróbel

Kustra

et al. 2021

Archiv.Civ.Mech.Eng

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The paper is devoted to the study of the mechanical, microstructural, and bio-corrosive behavior of low-alloyed Zn–Mg biodegradable surgical wires for bone reconstructions. Three biodegradable alloys with different magnesium content have been studied, their production technology has been developed and the product properties have been determined. The technology includes casting, extrusion, hot and cold drawing of the wire, and the product surface finishing. The paper shows the most important stages of the process (i.e., extrusion and drawing) in detail. The technological parameters have been selected based on the results of the computer modeling. The flow stress–strain curves of extruded materials have been obtained at various strain rates and temperatures. Two drawing technologies have been compared. The first one is the room temperature conventional wire drawing. In the second one, the first few passes have been made at an elevated temperature and the rest at room temperature. This allowed avoiding the breaking of the wire during the first passes (a typical issue of the conventional technology for these alloys) and increasing the ductility of the final product. Mechanical properties, bio-corrosion, and crystallographic texture of the material were determined at different stages of the processing. A simultaneous increase in the wire strength, the number of repeated bending until the rupture of the wire, and in the bio-corrosion rate due to drawing has been registered. This phenomenon coincided with a change in the crystallographic texture. It has been shown that the product tensile strength of about 250–300 MPa can be reduced by about 30% due to surgical knots tied on it.

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Section: Extruded Materialsmentioning

confidence: 99%

Mechanical properties, crystallographic texture, and in vitro bio-corrosion of low-alloyed Zn–Mg, produced by hot and cold drawing for biodegradable surgical wires

Milenin

Wróbel

Kustra

et al. 2021

Archiv.Civ.Mech.Eng

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“…Flow curves of the lead and hot steel have similar characteristics, and addition of alloying elements (like antimony, zinc, etc.) to the lead allows to select the compounds that physically simulate the deformation of certain steel grades [25]. The use of lead as a modeling material is well-founded and much extended.…”

Section: Materials Of Research: Equipment Tools Technological Analysmentioning

confidence: 99%

Development of alternative technology of dual forming of profiled workpiece obtained by buckling

Kukhar

Burko

Prysiazhnyi

et al. 2016

EEJET

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Показана можливість використання поздовжнього вигину як економічного способу безрівчакового профілювання заготовок. Для реалізації даного способу запропонована технологія спареного штампування поковок рим-болтів і розроблена компоновка штампового інструменту. Виконане дослідне штампування поковок рим-болтів по базовій і новій технологіях на свинцевих фізичних моделях заготовок. Порівняння результатів штампування поковки по двох варіантах виявило підвищення технікоекономічних показників нової технології Ключові слова: спарене штампування, безрівчакове профілювання, профільована заготовка, поковка, рим-болт, поздовжнє згинання, викривлення торців, облой Показана возможность использования продольного изгиба в качестве экономичного способа безручьевого профилирования заготовок. Для реализации данного способа предложена технология спаренной штамповки поковок рым-болтов и разработана компоновка штампового инструмента. Выполнена опытная штамповка поковок рым-болтов по базовой и новой технологиям на свинцовых физических моделях заготовок. Сравнение результатов штамповки поковки по двум вариантам выявило повышение технико-экономических показателей новой технологии Ключевые слова: спаренная штамповка, безручьевое профилирование, профилированная заготовка, поковка, рым-болт, продольный изгиб, искажение торцов, облой

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“…The model (2) follows the basic conception in the determination of the flow stress published in [2][3][4][5][6][7][8]. The well-known Johnson-Cook model [9] reveals another phenomenological based approach, so called the method of thermo-mechanical coefficients.…”

Section: Introductionmentioning

confidence: 99%

Research into the Flow Stress of Al-Mg-Si Alloy (AD-35) during the Abrupt Change of the Strain Rate at Elevated Temperatures

Петров

Voronkov

Potapenko

et al. 2013

KEM

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In industrial practice of rolling and hot forging, i.e. extrusion-type forging, abruptchanges in strain rate during the deformation of the material occur. For accurate numericalsimulation of a forging process, the experimental investigation of the effect of the transient changein strain rate on plastic flow behaviour is necessary. The present paper deals with the investigationof this effect on the flow stress of an AD-35 aluminium alloy during its deformation within thetemperature range of 350-450 °C. During continuous uniaxial compression loading of a cylindricalspecimen, the strain rate was either constant or abruptly increased or decreased from its initial valueat engineering strain of app. 26 %. The following strain-rate histories were applied: 1) constantstrain rate of 0.1, 1.0 and 10 s-1; 2) abrupt strain-rate increasing from 1.0 to 10.0 s-1; 3) abrupt strainratedecreasing from 10.0 to 1.0 s-1. The results of the experimental investigations corresponded tothe transient change in strain rate histories were used to verify the model of softening as well as themodel of hardening of the AD-35 alloy during the abrupt change of the strain rate. It allows todefine these models explicitly.

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Rheological similarity of metals and alloys

Cited by 13 publications

References 1 publication

Mechanical properties, crystallographic texture, and in vitro bio-corrosion of low-alloyed Zn–Mg, produced by hot and cold drawing for biodegradable surgical wires

Mechanical properties, crystallographic texture, and in vitro bio-corrosion of low-alloyed Zn–Mg, produced by hot and cold drawing for biodegradable surgical wires

Development of alternative technology of dual forming of profiled workpiece obtained by buckling

Research into the Flow Stress of Al-Mg-Si Alloy (AD-35) during the Abrupt Change of the Strain Rate at Elevated Temperatures

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