Inhomogeneous dislocation structure in fatigued INCONEL 713 LC superalloy at room and elevated temperatures
Inhomogeneous dislocation structure in fatigued INCONEL 713 LC superalloy at room and elevated temperatures
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DOI：
10.1016/j.msea.2005.01.058
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发表时间：
2005-07
期刊：
影响因子：
6.4
通讯作者：
M. Petrenec;K. Obrtlík;J. Polák
中科院分区：
文献类型：
--
作者：
M. Petrenec;K. Obrtlík;J. Polák
用透射电子显微镜研究了在300、773、973和1073K温度下，总应变幅值恒定的多晶Inconel713LC高温合金在循环应变直至破坏时的位错排列。在所有温度下循环的样品中，观察到平行于{111}面的平面位错排列。这些条带表现为切割γ通道和γ‘析出物的高位错密度的薄片。室温下观察到梯状条带。
The dislocations arrangement was studied using transmission electron microscopy in specimens of polycrystalline INCONEL 713 LC superalloy cyclically strained up to failure with constant total strain amplitudes at temperatures 300, 773, 973 and 1073K. Planar dislocation arrangements in the form of bands parallel to the {111} planes were observed in specimens cycled at all the temperatures. The bands showed up as thin slabs of high dislocation density cutting both the γ channels and γ′ precipitates. Ladder-like bands were observed at room temperature.