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SHEN Yong, WEN Jinglong. Flexural elastic limit of Zr61Ti2Cu25Al12 amorphous alloy under four-point bending loading mode[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2024, 60(8): 23-30. DOI: 10.11973/lhjy-wl240105
Citation: SHEN Yong, WEN Jinglong. Flexural elastic limit of Zr61Ti2Cu25Al12 amorphous alloy under four-point bending loading mode[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2024, 60(8): 23-30. DOI: 10.11973/lhjy-wl240105

Flexural elastic limit of Zr61Ti2Cu25Al12 amorphous alloy under four-point bending loading mode

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  • The bending test of Zr61Ti2Cu25Al12 amorphous alloy was designed according to the span-thickness ratio recommended in the current metal material bending performance test standard, and the specimen would undergo large deflection elastic deformation. It was proved that the upper limit of the span-to-thickness ratio of the bending specimen without large deflection elastic deformation depended on the elastic strain limit of the material. The elastic strain limit of the zirconium-based amorphous alloy was 2%, and the upper limit of the span-to-thickness ratio without large deflection elastic deformation in the four-point 1/4 bending mode was 22. Under the premise of ensuring small deflection deformation, through the four-point bending cyclic loading and unloading test, the bending yield stress corresponding to the initial shear deformation of the outermost surface of the Zr61Ti2Cu25Al12 alloy sample was about 1 760 MPa, and the bending elastic limit σp0.01 corresponding to 0.01% residual strain was 2 040 MPa.

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