Kinetic Diffusion Couple for Mapping Microstructural and Mechanical Data on Ti⁻Al⁻Mo Titanium Alloys.

Kinetic Diffusion Couple for Mapping Microstructural and Mechanical Data on Ti⁻Al⁻Mo Titanium Alloys.
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用于绘制 Ti-Al-Mo 钛合金微观结构和力学数据的动力学扩散偶

DOI:
10.3390/ma11071112
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发表时间:
2018-06-29
期刊:
Materials (Basel, Switzerland)
影响因子:
--
通讯作者:
Lu Y
Lu Y
中科院分区:
其他
文献类型:
--
作者:
Chen Y;Kou H;Cheng L;Zhang Y;Yu Y;Lu Y

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我们引入了一种新的策略,扩展了现有的扩散偶方法,有效地映射在散装样品的微观结构和力学性能。特征扩散对经历相互扩散退火,然后进行热/机械处理,用于在良好开槽的连续组成梯度中创建相和微观结构的混合光谱,然后进一步可用于局部高空间分辨率的微观分析探测。该策略在两个扩散偶Ti/Ti-7.58Al-4.97Mo和Ti-5.04Al/Ti-1.52Mo上得到了证明,通过测量β-到-α相变的微观分析技术,如电子探针显微分析、电子背散射衍射分析和纳米压痕,获得了显微组织和力学特性的光谱。研究了近β Ti合金的显微组织特征和力学性能,揭示了合金的相、形貌和显微硬度随合金整体成分和各相成分变化的规律。
We introduce a new strategy that extends the established diffusion couple approach for efficient mapping of microstructural and mechanical properties in bulk samples. The featured diffusion couples undergo an interdiffusion annealing followed by a thermal/mechanical treatment for creating a blended spectrum of phases and microstructures in the well-grooved continuous composition gradients, which is then further accessible to local high spatially resolving microanalysis probing. The strategy is demonstrated on two diffusion couples, Ti/Ti-7.58Al-4.97Mo and Ti-5.04Al/Ti-1.52Mo, by surveying the spectrums of microstructural and mechanical characteristics created through an appreciation of the β-to-α phase transformation with such microanalysis techniques as electron probe microanalysis, electron backscatter diffraction analysis, and nanoindentation. The examined microstructural characteristics and mechanical properties reveal the variation of phase, morphology, and microhardness based on the changes of the compositions of the overall alloys and the individual phases in these near-β Ti alloys.
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