Dynamic Hardness of MCrAlY Abradable Seal Coating

Abstract:

The purpose of this investigation is to study the dynamic hardness of MCrAlY abradable coatings under different strain rates. A dynamic indentation device based on the split Hopkinson pressure bar system (SHPB) was used. The results show that the hardness of MCrAlY coating increased with the increase of the strain rate, which has a positive strain rate effect. In addition, the difference of the static hardness of MCrAlY coating prepared by HVOF and LPPS was only 4%, while the difference in dynamic hardness was 16%.

• Periodical: Materials Science Forum (Volume 1035)
• Pages: 591-595
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1035.591
• Online since: June 2021
• Authors: Dan Guo*, Jian Ming Liu, De Ming Zhang, Xin Zhang, Tong Liu
• Keywords: Abradable Coating, Dynamic Hardness, MCrAlY, Strain Rate

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