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首页> 外文期刊>Scripta materialia >Microstructure and texture evolution in ultrafine-grained pure Ti processed by equal-channel angular pressing with subsequent dynamic compression
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Microstructure and texture evolution in ultrafine-grained pure Ti processed by equal-channel angular pressing with subsequent dynamic compression

机译:等通道角挤压后动态压缩处理超细晶粒纯Ti的组织和织构演变

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摘要

Ultrafine-grained (UFG) pure Ti processed by equal-channel angular pressing was subjected to dynamic compression at a stain rate of ~4000 s~(-1) over a wide temperature range. It is shown that the structure in longitudinal sections evolves from elongated shapes to polygons in dynamic testing at 93-473 K and to equiaxed grains at 673 K which grow to ~ 1.8 jam. The deformation mechanisms of UFG pure Ti are discussed with reference to its crystallographic texture.
机译:通过等通道角压处理的超细(UFG)纯Ti在宽温度范围内以〜4000 s〜(-1)的染色速率进行动态压缩。结果表明,在93-473 K的动态测试中,纵向截面的结构从细长的形状演变为多边形,而在673 K的情况下,纵向结构逐渐演变为等轴晶,直到〜1.8 jam。 UFG纯Ti的变形机理参照其晶体织构进行了讨论。

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