Reconstruction and quantitative characterization of the three dimensional microstructure model of TC6 titanium alloy based on dual-energy X-ray microtomography
Reconstruction and quantitative characterization of the three dimensional microstructure model of TC6 titanium alloy based on dual-energy X-ray microtomography
复制标题
基于双能X射线显微断层扫描的TC6钛合金三维显微组织模型重建及定量表征
DOI：
10.1016/j.msea.2016.08.078
复制
发表时间：
2016-10
期刊：
影响因子：
--
通讯作者：
Zhang H
中科院分区：
文献类型：
--
作者：
Li G;Shi R;Fan Q;Xia Y;Zhang H
采用双能显微CT（Micro-CT）成像技术，研究了TC6钛合金退火组织（800 ° C退火2 h，空冷）中初生α相、次生α相和β相密度差导致的吸收对比度低的问题。利用实验室X射线显微层析成像技术建立了TC6钛合金的三维显微组织模型，并对其进行了定量分析。结果表明，初生α相、次生α相和β相的体积分数分别为28.32%、47.78%和23.90%。成功地捕捉到了TC6钛合金复杂的微观结构特征，如空间分布、形状和相互连接等，这些特征很难用传统的二维显微技术来描述。在三维空间中，初生α相由离散的等轴晶和相互连接的晶粒组成，单个等轴晶的比例高达50%，平均直径约为10 µ m;次生α相与β相相互连接，形成完全互连的网络。
In the present study, dual-energy micro-computed tomography (Micro-CT) imaging was employed to overcome the difficulty of low absorption contrast due to the low difference in density among the primary α phase, secondary α phase, and β phase of the annealed microstructure (annealing at 800 °C for 2 h followed by air cooling) of TC6 titanium alloy. The three dimensional microstructure model of TC6 titanium alloy was first achieved by laboratory X-ray microtomography, and then analyzed quantitatively. It is found that the volume fractions of the primary α phase, secondary α phase and β phase are 28.32%, 47.78% and 23.90%, respectively. Some complex microstructural features of TC6 titanium alloy such as spatial distribution, shapes, and interconnectivities that can hardly be described by the conventional two dimensional microscopy technique were successfully captured. In three dimensional space, the primary α phase is composed of discrete equiaxed grains and interconnected grains, and the fraction of the individual equiaxed grains is up to 50% and the average diameter is about 10 µm; the secondary α phase interconnects with β phase forming a completely interconnected network.
登录
查看更多内容
影响因子：
2.3
作者：
L. Djukic;G. Pearce;I. Herszberg;M. Bannister;D. Mollenhauer
通讯作者：
L. Djukic;G. Pearce;I. Herszberg;M. Bannister;D. Mollenhauer
影响因子：
2.6
作者：
Lu, G-M;Wu, S-Y;Zhang, L-J
通讯作者：
Zhang, L-J
DOI：
10.1118/1.594520
发表时间：
1979-01-01
期刊：
Medical Physics (Woodbury)
影响因子：
--
作者：
KELCZ F;JOSEPH P M;HILAL S K
通讯作者：
HILAL S K
影响因子：
3
作者：
Baino, Francesco;Vitale-Brovarone, Chiara
通讯作者：
Vitale-Brovarone, Chiara
影响因子：
4.7
作者：
J. Chrapoński;W. Szkliniarz
通讯作者：
J. Chrapoński;W. Szkliniarz