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当冷速达10~6K/s量级时,Ni-34.6at-％Al合金中,富Ni的NiAl的微观组织尺寸显著减少,高密度、均匀分布的各类界面阻滞了裂纹的扩展,并在裂纹尖端产生局域塑性变形,室温延性和韧性明显提高
When the cooling rate is in the order of 10 ~ 6K / s, the microstructure size of Ni-rich NiAl in Ni-34.6at-% Al alloy is significantly reduced, and the high density and uniformly distributed interface blocks the crack growth In the crack tip local plastic deformation, ductility and toughness at room temperature increased significantly