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Abstract
Aging of IMI834 welds results in toughness degradation due to interlath precipitation. It has been observed that this phenomenon is predominant if the matrix microstructure is transformed beta.
Acknowledgements
The authors express their gratitude to Defence Research and Development Organization for the financial support to carry out this programme. The authors are thankful to Dr G. Malakondaiah, Director DMRL for his continued encouragement and support. The authors are thankful for the support extended by Surface Fracture Analysis Group and Electron Microscopy Group for metallurgical characterisation and to all those who have directly or indirectly extended their help in carrying out the studies.