A metastable aggregate of ferrite and cementite resulting from the transformation of austenite at temperatures below the pearlite but above the marten site start temperature.

一种亚稳态铁酸盐和碳化铁集合体，由奥氏体在低于珠光体温度但高于马氏体初温时变性而形成。

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It is found that the increase of oxygen vacancy content can increase the instability of the metastable tetragonal phase and accelerate the transformation to monoclinic zirconia.

结果表明：氧空位的存在与变化不仅影响着氧化锆相结构的稳定性，而且影响着氧化锆的低温相变过程。

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The high wear resistance of the metastable austenitic Mn-steels lies in the high work hardening caused by induced martensite transformation.

介稳奥氏体锰钢具有高耐磨性的原因是其在磨损过程中磨面诱发产生大量的马氏体提高了其抗磨粒的切削和剥离能力。

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