Influence of laser pulse treatment on structural state and strength characteristics of subsurface layer in Armco iron has been investigated. The yield stress of this layer was estimated from structural characteristics observed experimentally. The yield stress was shown to depend on the degree of ultra-fine and nanoscale grain refinement and the density of dislocations. The correlation between the degree of hardening and dislocation density in the laser impact zone was established.

中文翻译：

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激光脉冲处理对Armco铁超细结构的形成

研究了激光脉冲处理对Armco铁表面状态和下层强度特性的影响。该层的屈服应力是根据实验观察到的结构特性估算的。结果表明，屈服应力取决于超细和纳米级晶粒细化的程度以及位错的密度。建立了激光冲击区的硬化程度与位错密度之间的关系。