Nguyễn Hồng Thanh and Mai Văn Hồng 2026. The Effect of Phase Transformation on Residual Stress During Welding of EN 10025-2 Steel Pipe by Numerical Simulation: Online First: 25/08/2026. Journal of Technical Education Science. (Aug. 2026). DOI:https://doi.org/10.54644/jte.2026.2512.