Figure 3
From: Formation of nano-sized M2C carbides in Si-free GH3535 alloy
STEM image and corresponding SADPs for the M2C carbides in the Si-free alloy exposed to 650 °C for 2000 hours. (a) Within the grain boundary region (at grain boundaries or in the precipitate arrays and PEZs) and (b) the high-resolution image for (a). (c) Within the matrix (randomly distributed or in arrays). (d) Typical TEM-EDX spectrums and semi-quantitative composition analyses for the M2C carbides in the Si-free alloy. The carbon content is difficult to detect accurately using EDX, so only the relative contents (at. %) of the metal atoms (Cr, Ni and Mo) are listed.
