Mahlalela, Sibusiso SamuelPistorius, Pieter Georg Hendrik2025-06-202025-06-202025Mahlalela, S., Pistorius, P. Delta ferrite in modified 9Cr–1Mo steel weld metal. Welding in the World (2025). https://doi.org/10.1007/s40194-025-02030-5.0043-2288 (print)1878-6669 (online)10.1007/s40194-025-02030-5http://hdl.handle.net/2263/102908Please read abstract in the article.en© The Author(s) 2025. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License.9Cr–1Mo (P91) steelDelta ferriteGas–metal arc weldingDirect laser depositionThermo-Calc simulationArticle