Interdiffusion behavior between NiAlHf coating and Ni-based single crystal superalloy with different crystal orientations

Interdiffusion behavior between NiAlHf coating and Ni-based single crystal superalloy with different crystal orientations
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NiAlHf涂层与不同晶向镍基单晶高温合金的相互扩散行为

DOI:
10.1016/j.apsusc.2014.11.101
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发表时间:
2015-01
影响因子:
6.7
通讯作者:
Guo Hongbo
Guo Hongbo
中科院分区:
材料科学1区
文献类型:
--
作者:
Wang Ruili;Gong Xueyuan;Peng Hui;Ma Yue;Guo Hongbo

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采用电子束物理气相沉积(EB-PVD)技术在不同晶向的镍基单晶高温合金表面制备了NiAlHf涂层。研究了高温合金基体晶向对NiAlHf涂层与基体间互扩散行为的影响。在1100 °C热处理10 h后,合金中形成了以针状μ相为主的基体扩散区(SDZ)和以椭球形和棒状μ相为主的互扩散区(IDZ)。在1100 °C热处理50 h后,(0 1 1)晶向的SC合金中形成的二次反应区(SRZ)厚度约为14 μm,比(0 0 1)晶向的SC合金中的SRZ厚度要大,而IDZ的厚度与SRZ相近。
NiAlHf coatings were deposited onto Ni-based single crystal (SC) superalloy with different crystal orientations by electron beam physical vapor deposition (EB-PVD). The effects of the crystal orientations of the superalloy substrate on inter-diffusion behavior between the substrate and the NiAlHf coating were investigated. Substrate diffusion zone (SDZ) containing needle-like μ phases and interdiffusion zone (IDZ) mainly consisting of the ellipsoidal and rod-like μ phases were formed in the SC alloy after heat-treatment 10 h at 1100 °C. The thickness of secondary reaction zone (SRZ) formed in the SC alloy with (0 1 1) crystal orientation is about 14 μm after 50 h heat-treatment at 1100 °C, which is relatively thicker than that in the SC alloy with (0 0 1) crystal orientation, whereas the IDZ revealed similar thickness.
DOI: 10.2320/matertrans.m2010439
发表时间: 2011-09
影响因子: 1.2
作者:
K. Kasai;H. Murakami;S. Kuroda;H. Imai
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