Figure 1 | Scientific Reports

Figure 1

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

Figure 1

Mechanical properties of the HPT-processed samples. (a) Microhardness distributions as a function of εs, i.e. distance from the center. Hardness evolution of the HPT-process samples is classified: for εs < 92, the sample strengths of HT- (open circles) and RT-HPT (closed circles) increase with increasing εs; for 92 ≤ εs ≤ 125, a strength difference evolves; for εs = 125, a significant strength enhancement occurs in HT-HPT. (b) The stress-strain curves of the RT-92, RT-125, HT-92, and HT-125 samples.