Paper Title:
An Orientation-Dependent Failure Criterion for FCC Crystals
  Abstract

The crystalline orientation significantly affects the fracture behavior of crystals. However, the orientation-dependent failure criterion is still lacking up to now. In this paper the failure criteria for different crystalline planes of aluminum have been developed. The critical normal stresses to separate two parallel crystallographic planes have been calculated based on Morse potential. The critical stresses on four different planes ({100}, {111}, {110} and {120}) were obtained. It has been found that plane {120} had the minimum critical normal stress. The developed failure criteria have been applied in the crystal plasticity finite element method (CPFEM) model to simulate the uniaxial tensile deformation of single crystal aluminum with a notch. The lattice orientation evolution during deformation has been predicted by the CPFEM model. Elements at notch tip reaching predefined orientation-dependent failure criterion were removed from the mesh so that the crack growing could be determined explicitly without any path assumption.

  Info
Periodical
Key Engineering Materials (Volumes 385-387)
Edited by
H.S. Lee, I.S. Yoon and M.H. Aliabadi
Pages
801-804
DOI
10.4028/www.scientific.net/KEM.385-387.801
Citation
N. N. Huynh, C. Lu, L. Y. Si, K. Tieu, "An Orientation-Dependent Failure Criterion for FCC Crystals", Key Engineering Materials, Vols. 385-387, pp. 801-804, 2008
Online since
July 2008
Export
Price
$32.00
Share

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

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

Authors: Tian Rui Zhou, L.J. Wang, C.H. Xiong
Abstract:The ability of metal plastic forming and the mechanism performance of the part are correlated with grain granularity of the metal. Grain...
639
Authors: Hong Min Pen, Qing Shun Bai, Ying Chun Liang
Abstract:Quasicontinuum simulation of nanometric cutting was conducted on single crystal copper to investigate the effect of crystal orientation and...
154
Authors: Yan Ke Shi, Ke Shi Zhang, Jing Zhang, Ying Song Ma
Abstract:Based on the crystal plasticity theory, the slip-band traces on the specimen surface of polycrystalline copper tensioned uniaxially are...
1368
Authors: Xin Ming Cao, Wei Wei Guo, Xiao Wu Li
Abstract:The plastic deformation behavior of the and [014] Fe-35wt.%Cr alloy single crystals containing fine Cr-rich precipitates were investigated...
1960
Authors: Zhi Ping Ding, Ming Li, Teng Fei Wang, Rong Hua Yang
Chapter 3: Solid Mechanics
Abstract:Based on micro structure of Ni-based single crystal superalloy, a γ/γ’ two-phase unit cell finite element model was established, and its...
503