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Title: Prediction of the Dynamic Yield Strength of Metals Using Two Structural-Temporal Parameters

Abstract

The behavior of the yield strength of steel and a number of aluminum alloys is investigated in a wide range of strain rates, based on the incubation time criterion of yield and the empirical models of Johnson-Cook and Cowper-Symonds. In this paper, expressions for the parameters of the empirical models are derived through the characteristics of the incubation time criterion; a satisfactory agreement of these data and experimental results is obtained. The parameters of the empirical models can depend on some strain rate. The independence of the characteristics of the incubation time criterion of yield from the loading history and their connection with the structural and temporal features of the plastic deformation process give advantage of the approach based on the concept of incubation time with respect to empirical models and an effective and convenient equation for determining the yield strength in a wider range of strain rates.

Authors:
;  [1]
  1. Russian Academy of Sciences, Institute of Problems of Mechanical Engineering (Russian Federation)
Publication Date:
OSTI Identifier:
22771454
Resource Type:
Journal Article
Journal Name:
Physics of the Solid State
Additional Journal Information:
Journal Volume: 60; Journal Issue: 2; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7834
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM ALLOYS; EQUATIONS; FORECASTING; METALS; PLASTICITY; SIMULATION; STEELS; YIELD STRENGTH

Citation Formats

Selyutina, N. S., E-mail: nina.selutina@gmail.com, and Petrov, Yu. V. Prediction of the Dynamic Yield Strength of Metals Using Two Structural-Temporal Parameters. United States: N. p., 2018. Web. doi:10.1134/S1063783418020221.
Selyutina, N. S., E-mail: nina.selutina@gmail.com, & Petrov, Yu. V. Prediction of the Dynamic Yield Strength of Metals Using Two Structural-Temporal Parameters. United States. doi:10.1134/S1063783418020221.
Selyutina, N. S., E-mail: nina.selutina@gmail.com, and Petrov, Yu. V. Thu . "Prediction of the Dynamic Yield Strength of Metals Using Two Structural-Temporal Parameters". United States. doi:10.1134/S1063783418020221.
@article{osti_22771454,
title = {Prediction of the Dynamic Yield Strength of Metals Using Two Structural-Temporal Parameters},
author = {Selyutina, N. S., E-mail: nina.selutina@gmail.com and Petrov, Yu. V.},
abstractNote = {The behavior of the yield strength of steel and a number of aluminum alloys is investigated in a wide range of strain rates, based on the incubation time criterion of yield and the empirical models of Johnson-Cook and Cowper-Symonds. In this paper, expressions for the parameters of the empirical models are derived through the characteristics of the incubation time criterion; a satisfactory agreement of these data and experimental results is obtained. The parameters of the empirical models can depend on some strain rate. The independence of the characteristics of the incubation time criterion of yield from the loading history and their connection with the structural and temporal features of the plastic deformation process give advantage of the approach based on the concept of incubation time with respect to empirical models and an effective and convenient equation for determining the yield strength in a wider range of strain rates.},
doi = {10.1134/S1063783418020221},
journal = {Physics of the Solid State},
issn = {1063-7834},
number = 2,
volume = 60,
place = {United States},
year = {2018},
month = {2}
}