Paper Title:
Study on the In Situ SEM Tension Observation of E-A356 Alloys
  Abstract

The fracture mechanisms of E-A356 alloys (T5 treatment) have been investigated by means of in situ SEM under nonaxial tension loading. It is found that the crack initiated at the casting defects, such as at the gas or the shrinkage pores, because of the debonding of the silicon particles from the Al matrix. The crack propagation was mainly in the Al matrix and along the matrix/particle interface secondarily. The crack growth could be influenced by the eutectic silicon particles, when it encountered the Si particles, the growth direction would be changed and turned toward the weaker areas. The fracture resistance or the mechanical properties of the E-A356 alloys will be improved by means of reducing, eliminating gas or shrinkage pores and increasing the interface bound strength of the eutectic silicon particles with the Al matrix.

  Info
Periodical
Materials Science Forum (Volumes 561-565)
Main Theme
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
147-150
DOI
10.4028/www.scientific.net/MSF.561-565.147
Citation
J. W. Li, J. P. Xie, W. Y. Wang, S. Z. Wei, "Study on the In Situ SEM Tension Observation of E-A356 Alloys", Materials Science Forum, Vols. 561-565, pp. 147-150, 2007
Online since
October 2007
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: Alessandro Pirondi, Luca Collini, D. Fersini
Abstract:In this work the fatigue crack growth properties of friction stir welded butt joints are evaluated. Fatigue Crack Growth (FCG) tests have...
261
Authors: Jia Zhen Zhang, Xiao Dong He, Shan Yi Du
Abstract:In-situ SEM observations have revealed that fatigue crack propagation in aluminium alloys is caused by the shear band decohesion around the...
293
Authors: Zdeněk Majer, Pavel Hutař, Zdeněk Knésl
Abstract:In this paper polymeric particulate composites are studied (especially polypropylene (PP) matrix stuffed by rigid mineral fillers)....
564
Authors: Adam L. Pilchak, Wei Jie Lu, James C. Williams
Chapter 1: Invited Lectures
Abstract:Titanium (Ti) alloys are used in critical, fatigue limited applications in aircraft and aircraft engines. Current design practices are, of...
85