Transmission electron microscope investigations of the structure of copper precipitates in thermally-aged Fe—Cu and Fe—Cu—Ni
Transmission electron microscope investigations of the structure of copper precipitates in thermally-aged Fe—Cu and Fe—Cu—Ni
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DOI：
10.1080/09500839108215121
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发表时间：
1991-12
影响因子：
1.2
通讯作者：
P. J. Othen;M. Jenkins;G. Smith;W. Phythian
中科院分区：
文献类型：
--
作者：
P. J. Othen;M. Jenkins;G. Smith;W. Phythian
对热时效后的二元Fe 1·30wt%Cu和三元Fe 1·28wt%Cu 1·43wt%合金进行了常规透射电镜（TEM）和高分辨电镜（HREM）实验Ni合金中，研究了α-Fe基体中细小（7-15 nm）铜沉淀相的结构。实验结果表明，析出相具有孪晶9 R密排结构，而不是预期的f.c.c.结构据信，这种结构最初是通过从亚稳态b.c.c.相位
Abstract Conventional transmission electron microscopy (TEM) and high-resolution electron microscopy (HREM) experiments have been carried out on thermally-aged binary Fe 1·30 wt% Cu and ternary Fe 1·28 wt% Cu 1·43 wt.% Ni alloys to study the structure of small (7–15 nm) copper precipitates in the α-Fe matrix. The experiments show that the precipitates have a twinned 9R close-packed structure, rather than the expected f.c.c. structure. It is believed that this structure is generated initially by a martensitic transformation from the metastable b.c.c. phase.