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对国内生产的低磷GH169[s（P）＜0．001％]及常规GH169[w（P）0.008％～0．013％]变形合金锻件的力学性能进行了对比研究。结果表明，室温拉伸和高温拉伸强度未显现很大差异，然而低磷GH169合金反而显示出高温塑性特别是650℃／686MPa持久塑性的明显降低，且低磷合金在蠕变和疲劳／蠕变交互作用下的裂纹扩展速率皆高于常规合金，低磷合金的595℃／895MPa缺口周期持久寿命亦有降低的趋势。俄歇能谱分析表明，磷在晶界发生偏聚，透射电镜观察，发现低磷合金中的σ相的片状形式沿晶界析出，而磷含量提高使σ相的胞状形式沿晶界析出。
The mechanical properties of domestic deformed low-phosphorus GH169 [s (P) <0.001%] and conventional GH169 [w (P) 0.008% ~ 0.013%] deformed alloy forgings were compared. The results show that tensile strength at room temperature and high temperature tensile strength did not show much difference, but low phosphorus GH169 alloy instead showed high plasticity, especially 650 ℃ / 686MPa lasting plastic significantly reduced, and low phosphorus alloy creep and fatigue / creep The crack propagation rate under variable interaction is higher than that of the conventional alloy, and the 595 ℃ / 895MPa gap life of low phosphorus alloy also shows a decreasing trend. Auger spectroscopy analysis showed that the segregation of phosphorus in the grain boundaries, TEM observation found that the low-phosphorus alloy phase form of sheet along the grain boundary precipitation, and phosphorus content increases the cell-like form of σ-phase precipitation along the grain boundaries .