Figure 3
The graph in panel a plots stress in megapascals against elongation in per cent for 17-4 P H samples A, B, and C. The horizontal axis ranges from 0 to 20 per cent, and the vertical axis ranges from 0 to 1200 megapascals. The three curves rise gradually before reaching a plateau near the tensile region. The average yield strength is 575.4 megapascals, and the average tensile strength is 724.2 megapascals. Sample A, sample B, and sample C follow similar trends, with sample B reaching the plateau at the lowest elongation and sample A at the highest elongation. Panel b plots stress in megapascals against elongation in per cent for H-13 samples D, E, and F. The horizontal axis ranges from 0 to 20 per cent, and the vertical axis ranges from 0 to 1200 megapascals. The three curves increase almost linearly before peaking and then dropping near the highest elongation. The average yield strength is 827.5 megapascals, and the average tensile strength is 1045.4 megapascals. Sample D, sample E, and sample F closely overlap throughout the loading stage, with peak stresses occurring at approximately 17 per cent elongation.(a, b) 17-4PH versus H-13 stress versus elongation measurements
Source: Author’s own work