Alloying and the micromechanics of Co–Al–W–X quaternary alloys
Alloying and the micromechanics of Co–Al–W–X quaternary alloys
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DOI：
10.1016/j.msea.2014.05.044
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发表时间：
2014-09
期刊：
影响因子：
6.4
通讯作者：
Huilong Yan;J. Coakley;V. Vorontsov;N. Jones;H. Stone;D. Dye
中科院分区：
文献类型：
--
作者：
Huilong Yan;J. Coakley;V. Vorontsov;N. Jones;H. Stone;D. Dye
热轧多晶Co-7Al-5 W-2 Ta和Co-6Al-6 W-2 Ti（at.%）的晶格失配和衍射弹性常数使用中子和同步加速器X射线衍射测量。在这两种合金中的失配被发现是+0.67和+0.59%，使用在HRPD中子衍射。发现失配随温度增加，如在Ni超合金中。这意味着相干性增强的量随温度而增加。衍射弹性常数的测定表明，γ′相在所有取向上的刚性都小于γ基体，这意味着γ相将发生减载。
The lattice misfit and diffraction elastic constants in hot rolled polycrystalline Co–7Al–5W–2Ta and Co–6Al–6W–2Ti (at.%) are measured using neutron and synchrotron X-ray diffraction. The misfit in the two alloys was found to be+ 0.67 and+ 0.59%, using neutron diffraction at HRPD. The misfit was found to increase with temperature, as in Ni superalloys. This implies that the amount of coherency strengthening increases with temperature. The diffraction elastic constants measured show that the γ′ phase is less stiff than the γ matrix in all orientations, which means that load shedding will occur to the γ phase.