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研究了磷对IN718合金δ相的影响，结果表明，磷改善热处理态组织中δ相的形态和分布，显著抑制时效过程中δ相的生长．磷对δ相生长的抑制可能与磷对扩散的阻碍作用有关
The effect of phosphorus on the δ phase of IN718 alloy was studied. The results show that phosphorus can improve the morphology and distribution of δ phase in the heat treated microstructure and significantly inhibit the δ phase growth during aging. The inhibition of δ-phase growth by phosphorus may be related to the impediment of phosphorus to diffusion