Microstructure evolution of an EB-PVD NiAl coating and its underlying single crystal superalloy substrate
Microstructure evolution of an EB-PVD NiAl coating and its underlying single crystal superalloy substrate
复制标题
EB-PVD NiAl 涂层及其底层单晶高温合金基体的微观结构演变
DOI：
10.1016/j.jallcom.2016.02.115
复制
发表时间：
2016-07
影响因子：
6.2
通讯作者：
Gong Shengkai
中科院分区：
文献类型：
--
作者：
Gong Xueyuan;Peng Hui;Ma Yue;Guo Hongbo;Gong Shengkai
采用电子束物理气相沉积（EB-PVD）技术在具有（001）晶向的镍基单晶高温合金表面沉积NiAl涂层。沉积态NiAl涂层为柱状晶组织，具有（110）择优取向。研究了1100 °C下NiAl涂层与高温合金基体界面附近的组织演变行为。NiAl涂层中形成了Kirkendall空洞，表明涂层和基体中元素的扩散系数不同。在高温扩散退火过程中形成了由棒状和颗粒状拓扑密堆积（TCP）相组成的互扩散区（IDZ）和由针状TCP相组成的衬底扩散区（SDZ）。经1100 °C × 10 h扩散退火后，IDZ中形成了与涂层和基体不同取向的等轴β-NiAl晶粒。但经50 h扩散退火后，IDZ中的等轴β-NiAl相转变为与基体取向一致的γ′-Ni 3Al相。此外，在扩散退火过程中发生的基板的取向筏，筏平行于涂层/基板界面。
A NiAl coating was deposited onto a Ni-based single crystal superalloy with (001) crystal orientation by electron beam physical vapor deposition (EB-PVD). The as-deposited NiAl coating showed a columnar microstructure with (110) preferred orientation. The microstructure evolution behavior near interface between the NiAl coating and superalloy substrate at 1100 °C was investigated. Kirkendall voids were formed in the NiAl coating, indicating the different elements diffusion coefficients in the coating and substrate. Interdiffusion zone (IDZ) with rod-like and granular topological close-packed (TCP) phases and substrate diffusion zone (SDZ) with needle-like TCP phases were formed during diffusion annealing at elevated temperature. The equi-axed β-NiAl grains were developed in the IDZ after diffusion annealing at 1100 °C for 10 h, which showed different orientations from the coating and substrate. However, after 50 h diffusion annealing, the equi-axed β-NiAl phases in the IDZ were transformed into γ′-Ni3Al phases which had the same orientation as the substrate. Furthermore, oriented rafting of the substrate occurred during diffusion annealing and the rafts were parallel to the coating/substrate interface.
登录
查看更多内容
影响因子：
--
作者：
一輝 笠井;秀之 村上;聖治 黒田;八郎 今井
通讯作者：
一輝 笠井;秀之 村上;聖治 黒田;八郎 今井
DOI：
10.1016/j.msea.2005.06.028
发表时间：
2005-10
影响因子：
6.4
作者：
Qisheng Wang;Yizhe Tang;M. Guo;P. Ke;J. Gong;Congting Sun;L. Wen
通讯作者：
Qisheng Wang;Yizhe Tang;M. Guo;P. Ke;J. Gong;Congting Sun;L. Wen
NiAlHf涂层与不同晶向镍基单晶高温合金的相互扩散行为
影响因子：
6.7
作者：
Wang Ruili;Gong Xueyuan;Peng Hui;Ma Yue;Guo Hongbo
通讯作者：
Guo Hongbo
DOI：
10.1007/s11661-008-9534-1
发表时间：
2008-04
期刊：
Metallurgical and Materials Transactions A
影响因子：
--
作者：
D. Das;K. Murphy;Shuwei Ma;T. Pollock
通讯作者：
D. Das;K. Murphy;Shuwei Ma;T. Pollock
DOI：
10.1016/j.msea.2015.06.011
发表时间：
2015-08
影响因子：
6.4
作者：
M. Z. Alam;D. Satyanarayana;D. Chatterjee;R. Sarkar;D. Das
通讯作者：
M. Z. Alam;D. Satyanarayana;D. Chatterjee;R. Sarkar;D. Das