磷的微合金化机理与应用研究-GH761合金强韧化

The grain structure of GH4133 alloy is refined by controlling the thermal mechanical processing and heat treatment, so as to improve the plasticity and strength of the alloy. Phosphorus is added into the alloy to compensate the drop of life caused by the refinement of the grains. It is aimed to improve the combined mechanical properties of the alloy. The recrystallization and micriostructure are investigated to reveal their effect on the mechanical properties of the alloy. The distribution of phosphorus and the interaction between phosphorus, dislocation and grain boundaries are investigated to reveal the effect of phosphorus on the microstructure and mechanical properties of the alloy

通过控制轧制、固溶和时效处理细化GH761合金晶粒组织，保持合金强度并提高塑性。加入柿縋补偿晶粒细化引起的持久寿命降低。优化合金全面性能。研究合金相变规律和二次再结晶规律及组织结构对力学性能的影响规律。分析P在合金中的分布，探索P与位错、层错、晶界及析出相的交互作用，确定P对合金组织结构和力学性能的作用机理。