A cold-rolled 10 wt% Mn steel was austenitized before intercritical annealing. Austenite and ferrite fractions and austenite stability remained equivalent to those of the non-austenitized counterpart. However, martensite that was generated on quenching after austenitization did not recrystallize during intercritical annealing, and austenite formed along lath boundaries of martensite to yield a ferrite + austenite lamellar structure. The transition from interface strengthening to strain hardening in the lamellar structure was not as evident as in equiaxed structure, owing to the higher dislocation density and lower interface strengthening in the lamellar structure than in the equiaxed structure. Consequently, discontinuous yielding is effectively prohibited in the lamellar structure.

在临界退火之前，对冷轧的10 wt％Mn钢进行奥氏体化。奥氏体和铁素体的分数和奥氏体的稳定性保持与非奥氏体对应的相同。但是，在奥氏体化后的淬火中产生的马氏体在临界退火中不会再结晶，并且沿着马氏体的板条边界形成奥氏体，生成铁素体+奥氏体的层状组织。层状结构中界面增强到应变硬化的过渡不如等轴结构明显，这是由于层状结构中的位错密度高和界面增强低于等轴结构。因此，在层状结构中有效地禁止了不连续屈服。