An experiment is performed for explosive convergence (collapse) of a cylindrical shell of low carbon steel with a ferrite-perlite structure. It is revealed that during ultra-rapid heating caused by high-speed deformation austenite formation occurs in an unusual sequence: first, free ferrite is converted, then pearlite. The decrease in free ferrite transformation temperature is explained by action of high pressure, as well as by varying degrees of heating steel structural constituents. An effect of barothermal quenching is observed, as a result of which a pearlite-martensite structure forms.

中文翻译：

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低碳钢高速变形引起的高速加热奥氏体形成特征

对具有铁素体-珍珠岩结构的低碳钢圆柱壳进行爆炸收敛（塌陷）实验。结果表明，在高速变形引起的超快速加热过程中，奥氏体形成的顺序不寻常：首先是游离铁素体，然后是珠光体。游离铁素体转变温度的降低可以通过高压作用以及不同程度的加热钢结构成分来解释。观察到气压淬火的效果，结果形成珠光体-马氏体结构。