Effect of microstructural features on the fracture toughness of a welded alpha-beta TiAlMn alloy

The fracture toughness of weld fusion zones in a dilute, medium-strength alpha-beta TiAlMn alloy has been studied in relation to their microstructures. Welding was performed over a range of energy inputs using different techniques. The weldments were subjected to three different annealing treatmen...

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Bibliographic Details
Published in:Engineering fracture mechanics 1997-09, Vol.58 (1), p.29-41
Main Authors: Keshava Murthy, K., Sundaresan, S., Potluri, N.B.
Format: Article
Language:English
Subjects:
fracture toughness
titanium alloy
welds
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Summary:The fracture toughness of weld fusion zones in a dilute, medium-strength alpha-beta TiAlMn alloy has been studied in relation to their microstructures. Welding was performed over a range of energy inputs using different techniques. The weldments were subjected to three different annealing treatments. It has been shown that the fracture toughness of all weld metals is greater than that of the parent material. The data also reveal that there is a further improvement in fracture toughness on postweld heat treatment. The results are discussed in terms of the structural changes occurring during welding and subsequent annealing.
ISSN:0013-7944
1873-7315
DOI:10.1016/S0013-7944(97)00075-1