منشا خستگی عملکردی از آلیاژهای حافظه شکل

Schematic drawing of the formation of special grain boundaries in B2 during transformation cycling ({011} cross-section of B2 with only one set of sub-lattice atoms plotted): (a) perfect crystal in initial B2 state; (2) compound twinning in B19′ states; (3) Σ9 boundaries between the initial B2 and new B2 states; (4) Σ3 boundary between two new B2 states. (198KB)