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微合金钢的重要研究方向如微合金碳氮化物在铁素体中的形核沉淀问题及其沉淀强化问题等,都需要确切了解半共格的微合金碳氮化物与铁素体之间的界面能。然而,由于这种半共格的微合金碳氮比物十分微小(其平均尺寸仅为约2—10nm),其界面能不可能直接测定,这就严重限制了有关问题的深入研究。
Important research directions of microalloyed steels such as the nucleation and precipitation of microalloyed carbonitrides in ferrite and their precipitation hardening problems all require an exact understanding of the relationship between semi-coherent microalloyed carbonitrides and ferrite Interface can. However, since this semi-coherent microalloyed carbon / nitrogen ratio is very small (the average size is only about 2-10nm), its interface can not be measured directly, which severely limits the further research on this issue.