掺硼Ni₃Al-Fe合金中的马氏体转变

来源期刊：中南大学学报(自然科学版)1991年第5期

论文作者：金头男 孔祥炎

文章页码：545 - 550

关键词：Ni₃Al金属间化合物; NiAl金属间化合物; 马氏体; 孪晶; 取向关系; 超点阵; 亚结构

Key words：Ni₃Al intermetallics; NiAl intermetallics; martensite twin; orientation relationship; superlattice; substructure

摘    要：利用透射电子显微技术测定了掺硼加铁Ni₃Al合金中NiAl(β相)与Ni₃Al(γ′相)之间的取向关系,NiAl马氏体的晶体结构。分析了马氏体亚结构,其中孪晶马氏体的孪生关系为{111}〈112〉_fct或{101}〈101〉_bct;另一类亚结构出现0(1/2)(1/2)超反射,说明加铁NiAl金属间化合物在淬火过程中所形成的马氏体可以进一步有序化。更多还原 附件:1991-5-14

Abstract: The orientation relationship between NiAl (β phase) and Ni₃Al (γ' phase)and crystal structure of NiAl martensite are determined using transmission elec-tron microscopy. The substructures of martensite are analyzed, in which thetwinning relationship of the twin martensite is {111} 〈112〉_fct or {101} 〈101〉_bct. Another substructure martensite shows 0 1/2 1/2 superlattice reflections. It indicates that the further ordering of martensite transformed in NiAl with the addition of iron during quenching may occur.