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首页> 外文会议>International Conference on Nanomaterials by Severe Plastic Deformation(NanoSPD3); 20050922-26; Fukuoka(JP) >An EBSD study of texture and grain boundary evolution in a strongly textured aluminium alloy during ECA pressing
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An EBSD study of texture and grain boundary evolution in a strongly textured aluminium alloy during ECA pressing

机译：EBSD研究ECA压制过程中强织构铝合金的织构和晶界演化

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摘要

The texture and grain boundary evolution during equal channel angular pressing (ECAP) of a spray-cast Al-7034 (Al-Zn-Mg-Cu) alloy containing intermetallic particles with a range of sizes was studied through electron backscatter diffraction (EBSD). Up to 8 passes of ECAP using route Bc were employed. The initial ECAP pass leads to the development of low angle grain boundaries and subsequent passes lead to a relatively rapid increase in the fraction of high angle grain boundaries. Before ECAP, the material possessed a strong < 111 > and < 100 > fibre texture. On ECAP, the < 111 > fibre texture component is mostly retained but the < 100 > fibre develops to a Cube texture after the first ECAP pass. Goss textures form from about 4 passes of ECAP.
机译：通过电子反向散射衍射（EBSD）研究了包含喷镀金属间颗粒的Al-7034（Al-Zn-Mg-Cu）合金等通道角挤压（ECAP）过程中的织构和晶界演变。使用Bc路线最多使用了8次ECAP。最初的ECAP道次导致了低角度晶界的发展，随后的道次导致了高角度晶界的分数相对较快地增加。在ECAP之前，该材料具有很强的<111>和<100>纤维质地。在ECAP上，<111>纤维纹理分量大部分保留，但<100>纤维在第一次ECAP通过后发展为立方体纹理。高斯纹理由ECAP的大约4次通过形成。

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