Figure 4
(a) Selected high-speed IR with a low-temperature filter showing vapor plume dynamics of Trial #9 (410 SS, 416 W 1 ms), where the dynamics of the vapor plume can be observed. The corresponding X-ray images in the upper right corner share the same scale as the IR images. (b) Selected high-speed IR with a high-temperature filter, showing melt pool temperature dynamics of Trial #12 (Ti–6Al–4V, 416 W, 0.5 ms). (c) The high-spatial IR observations of Trial #19 (Ti–6Al–4V, 260 W, 0.8 ms). The vertical direction contains both spatial and temporal information due to the camera sensor reading line by line from top to bottom. (d) The high-spatial and high-speed IR readings at the same location of t = 1.90 ms. (e) The high-spatial and high-speed IR readings at the same location of t = 1.95 ms. (Temperatures all in °C).
