THE STRUCTURAL STABILITY OF WELDS IN COLUMBIUM ALLOYS.
Abstract
Aging studies of the three weld conditions were essentially completed and the aging kinetics compared. The B-66 .125 inch thick sheet was received and the evaluation of the effect of thickness initiated. Several conclusions have developed. (1) Interdendritic spacings of the weld metal are more strongly influenced by power input and cooling rate during welding than by chemical composition. (2) As-welded bend transition is dependent on welding speed. The faster the speed the lower the bend transition temperature for the condition studied. (3) The kinetics of aging in the temperature range of 1600 - 2200F is strongly influenced by interdendritic spacing, hence by weld parameters. The larger the interdendritic spacing the more sluggish the aging reaction. (4) A double aging reaction has been found in the B-66 alloy, one which occurs in the weld zone and a second which involves the heat affected zone. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 10, 1964
- Accession Number
- AD0601780
Entities
People
- R. E. Yount
Organizations
- General Electric