Friction stir processing was utilized for enhancing mechanical properties of a lightweight steel through development of fine grain structures with high austenite stability. Interestingly, an anomalous effect of grain refinement on yield stress was found which was justified considering the dominant strain accommodative mechanisms in the initial and processed microstructures.

中文翻译：

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摩擦搅拌加工轻钢中晶粒细化对屈服应力的反常影响

摩擦搅拌工艺用于通过开发具有高奥氏体稳定性的细晶粒结构来增强轻钢的机械性能。有趣的是，发现了晶粒细化对屈服应力的异常影响，考虑到初始和加工的微观结构中的主要应变调节机制，这是合理的。