A comparison of texture results obtained using precession electron diffraction and neutron diffraction methods at diminishing length scales in ordered bimetallic nanolamellar composites

作者：Carpenter J S^*; Liu X; Darbal A; Nuhfer N T; McCabe R J; Vogel S C; LeDonne J E; Rollett A D; Barmak K; Beyerlein I J; Mara N A

来源：Scripta Materialia, 2012, 67(4): 336-339.

DOI：10.1016/j.scriptamat.2012.05.018

• Transmission electron microscopy (TEM)
• Neutron diffraction
• Nanocomposites
• Multilayers
• Metals and alloys

Precession electron diffraction (PED) is used to acquire orientation information in Cu-Nb nanolamellar composites fabricated by accumulative roll bonding (ARB). The resulting maps quantify the grain size, shape, orientation distributions and interface planes in the vicinity of nanometer-thick deformation twins. The PED-based texture results compare favorably with bulk textures provided by neutron diffraction measurements, indicating uniformity in the ARB Cu-Nb texture. Additionally, {112}(Cu)parallel to{112}(Nb) interfaces are present, suggesting that ARB techniques can lead to stable interfaces with a special crystallography.

• 出版日期2012-8
• 单位Los Alamos