Tarasankar Debroy

TL;DR: In this paper, a transient, three-dimensional, turbulent heat transfer and fluid flow model was used to study the microstructures of steel welds from the combination of the fundamental principles from both transport phenomena and phase transformation theory, showing that the dissipation of heat and momentum in the weld pool is significantly aided by turbulence.

TL;DR: In this article, the effect of process parameters on weld metal microstructures of austenitic stainless steels during pulsed laser welding was investigated, and a transient heat transfer model was employed to simulate thermal cycles and cooling rates experienced by the material under various welding conditions.

TL;DR: Theoretical time-temperature transformation diagrams are calculated for various oxide inclusions based on an overall kinetics approach using nucleation and growth rate expressions, and a strong correlation between the published inclusion composition and the stability of the oxides was found as discussed by the authors.

TL;DR: In this article, a combined experimental and theoretical investigation on the influence of shoulder diameter on thermal cycles, peak temperatures, power requirements, and torque during FSW of AA7075-T6 was conducted.