Characterizing laser fusion welded aluminum using synchrotron x-ray microtomography

Conference · Tue Sep 01 00:00:00 EDT 1992

OSTI ID:10171128

Milewski, J O ^[1]; Hmelo, A B ^[2]; D`Amico, K L; Dunsmuir, J H; Ferguson, S R ^[3]

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1. Los Alamos National Lab., NM (United States)
2. Vanderbilt Univ., Nashville, TN (United States). Dept. of Materials Science and Engineering
3. Exxon Research and Engineering Co., Annandale, NJ (United States)

Preliminary research into the application of high power Nd-YAG lasers for welding indicate a dependency of the occurrence of weld discontinuities on processing parameters such as pulse duty cycle, travel speed, etc. The size and distribution of of weld features have been characterized using synchrotron microtomography, using facilities at the National Synchrotron Light Source. The ability of this technique to image defects such as gross and minor porosity, and centerline cracking, enables a metrology of interior surfaces which cannot be provided by metallurgical sectioning techniques alone.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36; AC02-76CH00016
• OSTI ID: 10171128
• Report Number(s): LA-UR--92-2464; CONF-921183--1; ON: DE92018608
• Country of Publication: United States
• Language: English

Related Subjects

07 ISOTOPE AND RADIATION SOURCES
070204
36 MATERIALS SCIENCE
360101
42 ENGINEERING
420500
ALUMINIUM
DEFECTS
IMAGES
INDUSTRIAL USES
RADIOMETRIC
LASER WELDING
MATERIALS TESTING
NSLS
PREPARATION AND FABRICATION
TOMOGRAPHY
WELDED JOINTS
X RADIATION