Study on fracture toughness of quasicrystalline phase in Mg-42Zn-7Y alloy based on indentation technique

Author:

Wang Yingnan1ORCID,Liu Jiawei1,Meng XiaokaiORCID,Guo JunhongORCID

Affiliation:

1. School of Science, Inner Mongolia University of Technology 1 , Hohhot 010051, China

Abstract

The Mg-42Zn-7Y alloy, which contains an icosahedral quasicrystalline phase, was prepared using a conventional solidification process. The fracture toughness of this quasicrystalline phase in the Mg-42Zn-7Y alloy was nondestructively detected using in situ tensile and indentation techniques. The alloy exhibited a tensile strength of 99.17 MPa and an elongation of 3.9%. Microscopic observation and energy spectrum analysis confirmed the high-contrast lamellar structure as the quasicrystalline phase. Ultimately, under cyclic loading during indentation, the fracture toughness of the quasicrystalline phase was determined to be 35.08 MPa m0.5. The findings of the present study provided an effective basis for the determination of the fracture toughness of the quasicrystalline phase.

Funder

National Natural Science Foundation of China

Publisher

AIP Publishing

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