Quantitative image analysis of WE43-T6 cracking behavior

A. Ahmad, Zainudin Yahya

Research output: Contribution to journalConference article

Abstract

Environment-assisted cracking of WE43 cast magnesium (4.2 wt.% Yt, 2.3 wt.% Nd, 0.7% Zr, 0.8% HRE) in the T6 peak-aged condition was induced in ambient air in notched specimens. The mechanism of fracture was studied using electron backscatter diffraction, serial sectioning and in situ observations of crack propagation. The intermetallic (rare earthed-enriched divorced intermetallic retained at grain boundaries and predominantly at triple points) material was found to play a significant role in initiating cracks which leads to failure of this material. Quantitative measurements were required for this project. The populations of the intermetallic and clusters of intermetallic particles were analyzed using image analysis of metallographic images. This is part of the work to generate a theoretical model of the effect of notch geometry on the static fatigue strength of this material.

Original languageEnglish
Article number012059
JournalIOP Conference Series: Earth and Environmental Science
Volume16
Issue number1
DOIs
Publication statusPublished - 01 Jan 2013
Event26th IAHR Symposium on Hydraulic Machinery and Systems - Beijing, China
Duration: 19 Aug 201223 Aug 2012

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image analysis
crack propagation
grain boundary
fatigue
backscatter
ambient air
diffraction
magnesium
crack
geometry
electron
material
cracking (fracture)
particle
in situ
effect
project

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

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abstract = "Environment-assisted cracking of WE43 cast magnesium (4.2 wt.{\%} Yt, 2.3 wt.{\%} Nd, 0.7{\%} Zr, 0.8{\%} HRE) in the T6 peak-aged condition was induced in ambient air in notched specimens. The mechanism of fracture was studied using electron backscatter diffraction, serial sectioning and in situ observations of crack propagation. The intermetallic (rare earthed-enriched divorced intermetallic retained at grain boundaries and predominantly at triple points) material was found to play a significant role in initiating cracks which leads to failure of this material. Quantitative measurements were required for this project. The populations of the intermetallic and clusters of intermetallic particles were analyzed using image analysis of metallographic images. This is part of the work to generate a theoretical model of the effect of notch geometry on the static fatigue strength of this material.",
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Quantitative image analysis of WE43-T6 cracking behavior. / Ahmad, A.; Yahya, Zainudin.

In: IOP Conference Series: Earth and Environmental Science, Vol. 16, No. 1, 012059, 01.01.2013.

Research output: Contribution to journalConference article

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AU - Yahya, Zainudin

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