fig2

Figure 2. Mechanical behaviors of heterostructures^[47] (A) Pile-ups of GNDs in front of a zone interface. GNDs emit from Frank-Read sources within coarse grains of the soft zone. (B) Plastic strain profile in front of the zone interface. (C) Strain gradient profile near the interface. (Quoted with permission from Wu et al.^[47], under the CC BY license, http://creativecommons.org/licenses/by/4.0/).