Effect of additional processing on texture evolution of Al0.5Cu alloy processed by equal channel angular extrusion (ECAE)
Effect of additional processing on texture evolution of Al0.5Cu alloy processed by equal channel angular extrusion (ECAE)
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DOI：
10.1016/j.msea.2003.09.076
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发表时间：
2004-05
期刊：
影响因子：
6.4
通讯作者：
S. Ferrasse;V. Segal;F. Alford
中科院分区：
文献类型：
--
作者：
S. Ferrasse;V. Segal;F. Alford
分析了等径角挤压（ECAE）加工Al.5Cu合金经进一步ECAE或轧制后的织构发展。考虑ECAE后获得的初始超细晶（UFG）或细晶（FG）材料。将ECAE与轧制相结合为纹理控制提供了额外的机会。在这两个样品中，从50%到75%的轧制还原足以产生轧制纹理。两种材料的织构强度在减小95%时显著增加，然后减小。在轧制的FG样品中发现了最高的织构强度。对于UFG材料，进一步的ECAE通过路线A或D创建逐渐弱的接近随机纹理。因此，ECAE激活的简单剪切对某些特定路线的纹理随机化比滚动更有效。这可能反映了ECAE和轧制在剧烈塑性变形过程中发生的机制上的一些差异。
The texture development of equal channel angular extrusion (ECAE) processed Al.5Cu alloy submitted to further ECAE or rolling is analyzed. Initial ultrafine-grained (UFG) or fine-grained (FG) materials obtained after ECAE are considered. Combining ECAE with rolling offers additional opportunities for texture control. In both samples, from 50 to 75% rolling reduction is sufficient to create rolling textures. Texture strength increases significantly up to 95% reduction and then decreases in both materials. The highest texture strengths are found for rolled FG samples. For UFG materials, further ECAE via route A or D create gradually weaker close to random textures. Thus simple shear activated by ECAE for some specific routes appears more effective for texture randomization than rolling. This may reflect some difference between ECAE and rolling in the mechanisms occurring during severe plastic deformation.