Paper Title:
Fatigue Crack Initiation and Propagation at a Sharp Notch in Zr-Based Bulk Metallic Glass
  Abstract

Fatigue strength of notched specimen and smooth specimen of Zr-based bulk metallic glass, Zr55Cu30Ni5Al10, were conducted under either plane-bending or axial-loading. Fatigue notch factor, Kf, for axial-loading was almost equal to the elastic stress concentration factor, Kt, and the value of Kf for plane-bending was 5% lower than the value of Kt. It indicates that the effect of stress gradient around notch root is negligible, and the fatigue limit of notched specimen is determined by the stress at the notch root. On the contrary, the fatigue strength and the fatigue limit were lower for axial-loading than plane-bending either for notched or smooth specimen. It is considered that the fatigue strength of BMG depends on the cooling rate in the casting process of the material, which is different along the thickness direction, and the fatigue strength of plane-bending reflects the strength at the specimen surface while that of axial-loading is determined by the weakest strength in the thickness direction.

  Info
Periodical
Materials Science Forum (Volumes 638-642)
Main Theme
Edited by
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
Pages
1659-1664
DOI
10.4028/www.scientific.net/MSF.638-642.1659
Citation
Y. Nakai, K. Fujihara, N. Sei, B. K. Kim, "Fatigue Crack Initiation and Propagation at a Sharp Notch in Zr-Based Bulk Metallic Glass", Materials Science Forum, Vols. 638-642, pp. 1659-1664, 2010
Online since
January 2010
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: J. Weerheijm
Abstract:The rate effect on concrete tensile strength can be modeled by the description of crack extension in a fictitious fracture plane [1,2].The...
991
Authors: Li Jun Han, Yong Nian He, Hou Quan Zhang
Abstract:A complete stress-strain experiment curve, gained through exerting low confining pressure on brittle rock, reflects the deformation and...
70
Authors: H.Q. Yan, Qing Yuan Wang
Abstract:In consistent with sustaining development, recycled aggregate concrete (RAC)that is made from recycled concrete aggregates could be a perfect...
1551
Authors: Jun Su, Shi Lang Xu, Dong Tao Xia
Chapter 2: Frontiers of Building Materials
Abstract:In this article, through the seismic experimental analysis for six frame joints of ultra-high toughness cementitious composites, the...
794
Authors: Hong Yuan Tang, Wei Lin
Chapter 1: Structural Engineering
Abstract:This paper uses ANSYS finite element program to do the nonlinear finite element analysis on steel reinforced concrete L-shaped short-shear...
571