Paper Title:
Analytic Prediction of Structural Stress-Strain Relations of Microstructured Metal
  Abstract

Nanostructured and ultra-fine grained metals have higher strength but extremely limited ductility compared to coarse grained metals. However, their ductility can be greatly improved by introducing a specific range of grain sizes in the microstructures. In the paper, multiscale unit cell approach (UCA) is developed and applied to predict the averaged stress-strain relations of the multiscale microstructure metals. The unit cell models are three-phase structured at different scale lengths of 100 nm, 1 μm and 10 μm with different volume fractions and periodic boundary conditions. The contributions of multi-scale microstructures to the macroscopic structural properties of metals are also studied using a analytic approach—two-step mean-field method (TSMF), where three microstructural parameters are introduced and thus mechanical properties such as strength and ductility are presented as a function of these parameters. For verification of these proposed numerical and theoretical algorithms, the structural properties of the pure nickel with three-grain microstructures are studied and the results from FEA and the proposed theory have good agreement.

  Info
Periodical
Edited by
John Bell, Cheng Yan, Lin Ye and Liangchi Zhang
Pages
83-86
DOI
10.4028/www.scientific.net/AMR.32.83
Citation
C. H. Yang, I. Sabirov, J. Mullins, P. D. Hodgson, "Analytic Prediction of Structural Stress-Strain Relations of Microstructured Metal", Advanced Materials Research, Vol. 32, pp. 83-86, 2008
Online since
February 2008
Export
Price
$35.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Masakazu Tane, Soong Keun Hyun, T. Ichitsubo, Hideo Nakajima
Abstract:We studied the plastic behavior of lotus-type porous iron with unidirectional long cylindrical pores. Lotus-type porous iron with different...
489
Authors: Yuichi Mizuno, Kenji Okushiro, Yoshiyuki Saito
Chapter 14: Severe Plastic Deformation
Abstract:Grain boundary migration in materials under severe plastic deformation was simulated by the phase field methods. The interface energy and...
597
Authors: Dana Zöllner, Peter Streitenberger
Poster Session 1
Abstract:A 3D grain growth model is developed based on a generalised mean-field approach. It allows the prediction of the growth history of individual...
877
Authors: Maxime Sauzay, Jia Liu, Fatima Rachdi, Loic Signor, Thomas Ghidossi, Patrick Villechaise
XVI. Fatigue Modelling and Simulation
Abstract:Two homogeneization approaches are used in order predict the cyclic elastic-plastic behaviour of 316L(N) polycrystals, either
833