Abstract
A new methodology for studying of weld metal phase transformations is presented that is based on a single sensor differential thermal analysis technique. This methodology is applied for in-situ measurement of phase transformations and construction of continuous cooling transformation diagrams for as-solidifying E11018-MR and E6010/C-Mn steel weld metals. Valuable information is obtained about the evolution of microstructure in these weld metals. The ranges of welding conditions which provide an optimal combination of microstructural constituents with respect to weldability and mechanical properties are determined. This paper demonstrates the application potential of the new methodology in studying weld metal phase transformations, development of welding consumables and development/testing of welding procedures.
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