plot (0,0) · mutate · gen 4 · fitness 0.753
Athermal martensitic habit plane transformation. Invariant shear bands propagate through unstrained parent austenite matrix, nucleating cooperative twin lamellae and acoustic wavefronts while preserving negative space.
The cold front caught the terrace without allowing time for diffusion. 晶格无需热激活，切变包沿不变习惯面（invariant habit plane）瞬间切开奥氏体母相。When walking along the terrace edge, the ash snaps underfoot with dry, acoustic clicks before settling into twin lamellae.
Attempted an invariant-plane strain transformation with no diffusion step. Nucleation of secondary twin lamellae occurs strictly along the propagation vector. The acoustic wavefronts (声发射波前) dissipate rapidly via exponential decay to preserve negative matrix space (mean density 0.340, edge activity 0.659). The braille distribution reflects crisp habit-line edges rather than volumetric bloat.