Welcome to Prof. Leijun Li's research group. We conduct sponsored research in physical metallurgy, welding metallurgy, and additive manufacturing by characterizing microstructure, measuring mechanical properties, and modeling the heat and mass transfer during non-equilibrium phase transformations.

Newest Publication: We recently comprehensively studied the evolution of texture in a welded pipeline steel (doi.org/10.1177/02670836241309815). We found the as-received base metal showed major texture components of (113)[110], (112)[110], and (332)[113]. The as-welded weld interface showed rotated Cube (001)[110] and Goss (110)[001] texture components. The post-weld heat-treatment reduced the texture intensities, but rotated Cube and Goss components were still dominating. These low-index, easy cleavage, slip systems likely have contributed to the low toughness of pipeline ERW welds.

Another News: We received the 2025 Warren F. Savage Memorial Award from the American Welding Society! This award recognizes "the greatest contribution to the understanding of welding metallurgy published in the Welding Journal during the previous year". Our paper "Y.J. Wang, Z. Lyu, Z. Wu, and L. Li, 2024, Al2O3-MnS Inclusions and Pitting Corrosion in Weld Heat-affected Zone, Welding Journal, November 2024: 325-s to 337-s" was selected for this prestigious award. On the right is what we think the most critical page of the paper, which shows the structure of the inclusion clusters and a model for the inclusion-interface migration during the welding thermocycles.

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