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Document type:
Zeitschriftenaufsatz 
Author(s):
Hain, K.; Hugenschmidt, C.; Pikart, P.; B̈oni, P. 
Title:
Spatially Resolved Positron Annihilation Spectroscopy on Friction Stir Weld Induced Defects 
Abstract:
A friction stir welded (FSW) Al alloy sample was investigated by Doppler broadening spectroscopy (DBS) of the positron annihilation line. The spatially resolved defect distribution showed that the material in the joint zone becomes completely annealed during the welding process at the shoulder of the FSW tool, whereas at the tip, annealing is prevailed by the deterioration of the material due to the tool movement. This might be responsible for the increased probability of cracking in the heat af...    »
 
Journal title:
Science and Technology of Advanced Materials 
Year:
2010 
Journal volume:
11 
Month:
feb 
Journal issue:
Pages contribution:
025001 
Language:
en 
Print-ISSN:
1468-6996, 1878-5514