Microstructural evolution and mechanical properties of NiCrAlYSi+NiAl/cBN abrasive coating coated superalloy during cyclic oxidation

Y.D.Liu ¹J.Sun ²W.Li ¹W.S.Gu ¹Z.L.Pei ³J.Gong ³C.Sun³

扫码查看

作者信息

1. School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang 110016, China;Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
2. Advanced Research Institute for Multidisciplinary Science, Qilu University of Technology (Shandong Academy of Sciences), 3501 Daxue Road,Jinan 250353, China
3. Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
折叠

Abstract

Cyclic oxidation behavior of NiCrAlYSi + NiAl/cBN abrasive coating at 900 ℃ and the mechanical properties of the coating-substrate system were investigated.Results indicated that elemental interdiffusion occurred between the coating and substrate,which caused the formation of interdiffusion zone (IDZ) and second ary reaction zone (SRZ) during aluminization,while their compositions and structures changed with oxidation.AlN interfacial layer formed at cBN/metallic matrix interface during aluminization,while it transformed into multilayer oxides during oxidation.Due to the microstructural evolution of these interfaces,the fracture behavior and bending toughness of the system changed greatly during three-point bending tests.Besides,the damage mechanisms were discussed.

Key words

Abrasive coating/Cyclic oxidation/TEM/Interface/Superalloy

引用本文复制引用

基金项目

National Science and Technology Major Project of China(2017-VII-0012-0108)

出版年

2021

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量56

段落导航