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本文研究了金属间化合物NiAl－Fe的超塑性行为及其机理结果表明：该合金的显微组织由β－NiAl相基体和γ－Ni无序固溶体相组成．在1123—1253K，1．04×10(－4)－1．04×10(－2)s(－1)拉伸变形时，表现超塑性行为．最大伸长率233％，超塑性变形试样的断口呈韧性特征，在断裂区没有空洞产生，通过SEM分析发现，γ相在变形过程中发生碎化、β相存在动态再结晶
In this paper, the superplastic behavior of NiAl-Fe intermetallic compound and its mechanism were studied. The results show that the microstructure of the alloy is composed of β-NiAl phase and γ-Ni disordered solid solution phase. The superplastic behavior was exhibited at the tensile deformation of 1123-1253K and 1.04 × 10 (-4) -1.04 × 10 (-2) s (-1). The maximum elongation is 233%. The fracture of the superplastic deformation specimen is ductile, and there is no void in the fracture zone. SEM analysis shows that the γ phase is fragmented during deformation and the dynamic recrystallization of the β phase