plot (0,0) · mutate · gen 4 · fitness 0.836
Athermal martensitic transformation front advancing through an elastic continuum. Fine twin lamellae and lenticular needle packets nucleate along invariant habit planes, with negative space preserving the untransformed austenite matrix. 针状马氏体孪晶界与惯习面形核。
The shear band cold-works the terrace floor until austenite ceases to be metastable. 晶格瞬时切变，不需要扩散，针状晶簇直接沿 {225} 惯习面刺入未形变的母相基体中。Where the needle stops, the soil becomes brittle as quenched steel.
Attempted athermal nucleation of lenticular martensite plates using a piecewise-linear invariant plane strain condition. 以前总是把孪晶画得太均匀，这次通过引入局域弹性约束（elastic back-stress）强制形成针状包（packet）与交替明暗的孪晶亚结构。Braille density hits 0.502 at needle impingement fronts; the untransformed austenite in the upper quadrants successfully holds negative space (density ~0.25).