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从1173K淬火的Cu-11.2Al-2.9Ni合金试样中共存有两类马氏体,一种为M2H结构、点阵常数为:a=0.446nm、b=0.540nm、c=0.424nm,β=92°,由微孪晶组成,另一种为N9R结构、含有高密度的层错。研究表明:一片层错型N9R马氏体实际上是由许多小的、具有N9R或FCC或2H结构的极薄片堆垛起来的混合物。而且9R型和2H型两类马氏体在结构上有十分密切的内在联系。本文用电子显微镜等技术研究了这两类马氏体的细结构以及有关界面的特征、稳定性和电子束辐照的影响
There are two types of martensite coexist in the Cu-11.2Al-2.9Ni alloy specimen quenched from 1173K, one of which is of M2H structure with a lattice constant of a = 0.446 nm, b = 0.540 nm, c = 0.424 nm, β = 92 °, composed of micro-twin and the other is N9R structure, containing high-density layer faults. Studies have shown that a single layer of misfolded N9R martensite is actually a stack of many small, thin sheets with N9R or FCC or 2H structures. And 9R and 2H two types of martensite in the structure has a very close relationship. In this paper, electron microscopy and other techniques to study the fine structure of these two types of martensite and the relevant interface characteristics, stability and the impact of electron beam irradiation