Figure 3 | Scientific Reports

Figure 3

From: Superior Strength and Multiple Strengthening Mechanisms in Nanocrystalline TWIP Steel

Figure 3

HT-HPT microstructures, showing the formation of deformation twins. (a) Low-magnification bright-field micrograph of the HT-HPT sample. (b) HRTEM images and corresponding selected area electron diffraction patterns with a [011]fcc zone axis shown as an inset for HT-92 samples. The formation of nanometer-thick twin. (c) HRTEM micrograph for the HT-125 sample. Both nanometer-thick twins and nano-sized particle on grain boundary, highlighted by a yellow circle. The distributions of (d) grain size and (e) lamellar twin thicknesses, determined from HRTEM images, revealing an average grain size and twin thickness of 45 and 3 nm, respectively.

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