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Characterization of damage evolution in an AM60 magnesium alloy by computed tomography

Journal Article · · AIP Conference Proceedings
DOI:https://doi.org/10.1063/1.1302064· OSTI ID:21207700
;  [1]; ; ;  [2];  [3]
  1. Center for Nondestructive Evaluation, 3400 N. Charles St., Baltimore, Maryland 21218 (United States)
  2. Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550 (United States)
  3. Sandia National Laboratories, 7011 East Ave., Livermore, California 94550 (United States)
+ Show Author Affiliations
Lawrence Livermore National Laboratory (LLNL) and Sandia National Laboratories, California (SNL) are collaborating on the development of new techniques to study damage evolution and growth in material specimens subjected to mechanical loading. These techniques include metallography, radiography, computed tomography (CT) and modeling. The material specimens being studied include cast magnesium and aluminum alloys, and forged stainless steel. We will concentrate on characterizing monotonically loaded magnesium alloy specimens using computed tomography. Several notched tensile specimens were uniaxially loaded to different percentages of the failure load. Specimens were initially characterized by radiography and computed tomography to determine the preloaded state. Subsequent CT scans were performed after the samples were loaded to different percentages of the load failure. The CT volumetric data are being used to measure void size, distribution and orientation in all three dimensions nondestructively to determine the effect of void growth on the mechanical behavior of the materials.
OSTI ID:
21207700
Journal Information:
AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 497; ISSN APCPCS; ISSN 0094-243X
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CAT SCANNING
DYNAMIC LOADS
FAILURES
IMAGE PROCESSING
LAWRENCE LIVERMORE NATIONAL LABORATORY
LOADING
MAGNESIUM ALLOYS
SANDIA NATIONAL LABORATORIES
SIMULATION
SOLIDS
STAINLESS STEELS
TENSILE PROPERTIES
VOIDS