Investigation of phase transformations by in-situ neutron diffraction in a Co-Re-based high temperature alloy
Investigation of phase transformations by in-situ neutron diffraction in a Co-Re-based high temperature alloy
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DOI：
10.1016/j.matlet.2010.08.066
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发表时间：
2010-12-15
影响因子：
3
通讯作者：
Roesler, J.
中科院分区：
文献类型：
--
作者：
Mukherji, D.;Strunz, P.;Roesler, J.
采用高温原位中子衍射技术研究了Co-Re基合金的相变。研究了碳化物的稳定性和Co基体由hcp相向fcc相的转变。的γ = γ相变表现出很大的滞后与温度。该合金具有Cr（23）C（6）的复杂组织。TaC和sigma相在宽温度范围内稳定。滞后是Co基体和其他相（例如，Cr碳化物和σ）之间的组合物相互作用的结果。TaC在高达1300摄氏度的高温下稳定。(C)2010 Elsevier BV保留所有权利。
In-situ neutron diffraction at high temperatures was used to investigate phase transformation in a Co-Re-based alloy. Stability of carbides and transformation of Co matrix from epsilon (hcp) to gamma (fcc) phase were studied. The epsilon = gamma phase transformation exhibited a large hysteresis with temperature. The alloy has a complex microstructure with Cr(23)C(6). TaC and sigma phase stable over a wide temperature range. The hysteresis is the result of composition interplay between Co-matrix and other phases, e.g. Cr-carbide and sigma. TaC is stable at high temperatures up to 1300 degrees C. (C) 2010 Elsevier B.V. All rights reserved.