Characterizing laser fusion welded aluminum using synchrotron x-ray microtomography

Conference · Tue Dec 31 23:00:00 EST 1991

OSTI ID:7278959

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

---

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: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36; AC02-76CH00016
• OSTI ID: 7278959
• 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 -- Radiation Sources-- Industrial Uses
Radiometric
36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
42 ENGINEERING
420500* -- Engineering-- Materials Testing
ACCELERATORS
ALUMINIUM
CYCLIC ACCELERATORS
DEFECTS
DIAGNOSTIC TECHNIQUES
ELECTROMAGNETIC RADIATION
ELEMENTS
FABRICATION
IMAGES
IONIZING RADIATIONS
JOINING
JOINTS
LASER WELDING
METALS
NSLS
RADIATION SOURCES
RADIATIONS
SYNCHROTRON RADIATION SOURCES
SYNCHROTRONS
TOMOGRAPHY
WELDED JOINTS
WELDING
X RADIATION