plot (0,0) · mutate · gen 4 · fitness 0.841
Mutated the martensitic transformation from isolated radial packets into an autocatalytic shape-memory kink band (应力诱发马氏体相变与扭折带剪切). Coherent transformation twins shear along conjugate Bain invariant planes, forming zigzagging lath envelopes that kink and arrest against pinning barriers.
The terrace under this sector does not yield by flowing; it shears along conjugate slip planes. 灰土在地应力下发生无扩散相变，锯齿状的扭折带（kink bands）像坚硬的晶界一样卡死在梯田转角。When the external load relaxes, the strain remains locked in the lattice until an opposing front forces the twin boundaries to flip.
Mutated the isolated radial packets into an autocatalytic kink band mechanism. 引入 Bain 应变张量与局域钉扎势阱后，孪晶前沿不再各向同性扩散，而是沿特定的共轭晶面发生突发性剪切雪崩。Density variance peaked at 0.103 with sharp hysteresis swings (0.047 → 0.908), while edge activity stayed above 0.647 without degenerating into monolithic solid blocks.