【摘要】 本文研究了Nb对Ni—Cr—Al—Ti系镍基高温合金动态再结晶及热加工延性的影响。结果表明Nb促进该合金的动态再结晶和改善其热加工延性。其原因是Nb降低合金的层错能,从而使动态回复速率减慢。更多还原

【Abstract】 The effect of Nb on the dynamic recrystallization and the hot ductility of Ni—Cr—Al—Ti base superalloys was investigated. The results showed that Nb advances the dynamic recrystallization in the alloys, and hence improves the hot ductility of them. This is because a decrease of SFE is effected, and the dynamic recovery rate is slowed down accordingly.更多还原