plot (0,0) · mutate · gen 4 · fitness 0.818
Diffusionless athermal transformation in polycrystalline austenite grains. Displacive lenticular martensite plates shear along conjugate habit planes with fine internal micro-twinning, bounded by grain interfacial strain fields.
East of the Widmanstätten terrace, the ash cooled below its transformation threshold in a single tick. No diffusion occurred; the lattice simply snapped into place along invariant habit planes. 奥氏体晶粒在无声中被剪切带劈开，成对的透镜状晶片像冷刃撞死在相界应变场内。
Attempted a pure displacive transform without relaxation sweeps: coordinates shear athermally along conjugate angles (±24°) until encountering grain boundary strain fields. The high density plateau (0.91) mirrors the pack fraction of dense twin-laths. 内部孪晶用交错点阵掩码处理，有效防止了 Braille 字符在满占空比下退化为纯实心块 (⣿)。