The simulations of austenite grain growth in HAZ of ultra-fine grain steel make foundation for future research work.

本文的研究结果将有助于新一代钢铁材料焊接HAZ组织模拟的进一步研究。

youdao

Ultra steel is characterized by its higher cleanness and ultra-fine grain, thus it has higher strength, toughness and longer life even without addition of more alloying elements.

超级钢的主要特征是高洁净度和超细晶粒组织，在不增加任何合金元素的情况下，其强度、韧性和使用寿命提高一倍。

youdao

With the deeper knowledge of ultra fine grain steel, the process of refinement has became one of the main methods to increase mechanical properties of steel availably nowadays.

随着对超细晶粒钢性能了解的逐渐深入，组织细化技术已经成为当今钢铁行业有效提高钢铁机械性能的重要方法之一。

youdao