Temperature rise and flow of Zr-based bulk metallic glasses under high shearing stress

Zhang, Weiguo; Ma, Mingzhen; Song, Ai‐jun; Liang, S.X.; Hao, Qiuhong; Tan, Chen; Qin, Jing; Liu, Riping

doi:10.1007/s11433-011-4489-4

Cited by 8 publications

(2 citation statements)

References 26 publications

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“…The melting phenomenon caused by the high temperature in the shear zone is also manifested in the chips, and the The cutting temperature in the machining of amorphous alloys also affects the machining performance of amorphous alloys in terms of the shear band. Zhang et al [82] expressed that the deformation of BMG after turning was at least partly caused by the adiabatic shear temperature rise. Increased shear speed leads to significant melting of the workpiece surface due to temperature rise in the shear zone.…”

Section: Machining Performance Of Amorphous Alloysmentioning

confidence: 99%

A Review of the Preparation, Machining Performance, and Application of Fe-Based Amorphous Alloys

et al. 2022

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Amorphous alloy is an emerging metal material, and its unique atomic arrangement brings it the excellent properties of high strength and high hardness, and, therefore, have attracted extensive attention in the fields of electronic information and cutting-edge products. Their applications involve machining and forming, make the machining performance of amorphous alloys being a research hotspot. However, the present research on amorphous alloys and their machining performance is widely focused, especially for Fe-based amorphous alloys, and there lacks a systematic review. Therefore, in the present research, based on the properties of amorphous alloys and Fe-based amorphous alloys, the fundamental reason and improvement method of the difficult-to-machine properties of Fe-based amorphous alloys are reviewed and analyzed. Firstly, the properties of amorphous alloys are summarized, and it is found that crystallization and high temperature in machining are the main reasons for difficult-to-machine properties. Then, the unique properties, preparation and application of Fe-based amorphous alloys are reviewed. The review found that the machining of Fe-based amorphous alloys is also deteriorated by extremely high hardness and chemical tool wear. Tool-assisted machining, low-temperature lubrication assisted machining, and magnetic field-assisted machining can effectively improve the machining performance of Fe-based amorphous alloys. The combination of assisted machining methods is the development trend in machining Fe-based amorphous alloys, and even amorphous alloys in the future. The present research provides a systematic summary for the machining of Fe-based amorphous alloys, which would serve as a reference for relevant research.

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Section: Machining Performance Of Amorphous Alloysmentioning

confidence: 99%

A Review of the Preparation, Machining Performance, and Application of Fe-Based Amorphous Alloys

et al. 2022

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“…It also indicated that the machining processing of BMG was feasible. Then the in uence of cutting temperature on the generation and propagation of shear band was studied [13]. The results showed that the thermal instability of the shear band was the main reason for the plastic deformation behavior of BMG.…”

Section: Introductionmentioning

confidence: 99%

Study On The Cutting Performance of High-Speed Machining Zr-Based Bulk Metallic Glass

Yang

Zhang

et al. 2021

Preprint

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The cutting performance of high-speed machining (100-350 m/min) Zr57Cu20Al10Ni8Ti5 (at.%) bulk metallic glass (Zr57 BMG) was studied, as compared with industrial pure zirconium (Zr702). The effect of cutting speed on cutting force, surface roughness, surface morphology and chip morphology was analyzed. Although the strength of Zr57 BMG is much higher than that of Zr702, the difference in main cutting force is small, which can be attributed to the thermal softening of Zr57 BMG material during machining. The machined surface characteristics and the formation of chips were investigated. Different from low-speed machining, the groove marks and adhensions on machined surface evolve into wave patterns and molten droplets with the cutting speed increasing from 100 m/min to 350 m/min. The appearance of wave patterns tends to destroy the machined surfaces, and the worst quality was obtained at the speed of 250 m/min. The free surface morphology of the chips, with cutting speed smaller than 150 m/min, show obvious serration and molten droplets between shear bands. With the increase of cutting speed, oxidation on the chip surfaces occurred, and the chip surface was gradually covered by powder particles due to the melting of Zr57 BMG workpiece materials. The machined surfaces of Zr57 BMG maintain amorphous structures after high-speed machining, which shows excellent application potential for the processing of Zr57 BMG.

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Study on the cutting characteristics of high-speed machining Zr-based bulk metallic glass

Yang

Tang

et al. 2022

Int J Adv Manuf Technol

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Temperature rise and flow of Zr-based bulk metallic glasses under high shearing stress

Cited by 8 publications

References 26 publications

A Review of the Preparation, Machining Performance, and Application of Fe-Based Amorphous Alloys

A Review of the Preparation, Machining Performance, and Application of Fe-Based Amorphous Alloys

Study On The Cutting Performance of High-Speed Machining Zr-Based Bulk Metallic Glass

Study on the cutting characteristics of high-speed machining Zr-based bulk metallic glass

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