In situ observation of texture and microstructure evolution during rolling and globularization of Ti-6Al-4V
In situ observation of texture and microstructure evolution during rolling and globularization of Ti-6Al-4V
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DOI：
10.1016/j.actamat.2012.11.037
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发表时间：
2013-03-01
期刊：
影响因子：
9.4
通讯作者：
Dye, D.
中科院分区：
文献类型：
--
作者：
Warwick, J. L. W.;Jones, N. G.;Dye, D.
利用同步辐射X射线衍射和非原位表征研究了β退火Ti-6Al-4V在α-β轧制和所谓的再结晶退火过程中织构的演变。在轧制过程中，初始α（0 0 0 2）织构软化，并且殖民地α变得扭结。在球化过程中，织构随着板条的高应变（因此取向错误）区域的消失而加强，并且一旦初级α的粗化成为主导，这种加强就继续。在较短的热处理时间下，冷却时形成的α（s）板条与β的变体相关取向的范围相同，但在较长的退火时间下，该α（s）呈现周围α（p）的取向。讨论了含宏观区的双峰Ti-6Al-4V材料的力学性能的影响。(C)2012 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
The evolution of texture in beta-annealed Ti-6Al-4V during a alpha-beta rolling and so-called recrystallization annealing has been examined using synchrotron X-ray diffraction and ex situ characterization. During rolling, the initial alpha (0 0 0 2) texture softens and the colony alpha becomes kinked. During globularization, the texture strengthens as highly strained (and hence misoriented) areas of the laths disappear and this strengthening continues once coarsening of the primary alpha becomes dominant. At shorter heat treatment times the alpha(s) laths that form on cooling do so with a range of variant-related orientations to the beta, but at longer annealing times this alpha(s) takes on the orientation of the surrounding alpha(p). The implications for the mechanical performance of macrozone-containing bimodal Ti-6Al-4V material are discussed. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.