Surface formation mechanism in waterjet guided laser cutting of a Ni-based superalloy

Zhirong Liao; Dongdong Xu; Dragos Axinte; Jeremie Diboine; Anders Wretland

doi:10.1016/j.cirp.2021.03.007

Surface formation mechanism in waterjet guided laser cutting of a Ni-based superalloy

Zhirong Liao, Dongdong Xu, Dragos Axinte, Jeremie Diboine, Anders Wretland

Department of Mechanical, Materials and Manufacturing Engineering

Research output: Journal Publication › Article › peer-review

18 Citations (Scopus)

Abstract

Waterjet guided laser (WJGL) cutting is a relatively new technology for high-precision machining of difficult-to-cut materials. However, its material removal mechanism presents some unique features because of the interaction between laser, waterjet and workpiece. This paper investigates the surface formation mechanism in WJGL cutting of Ni-based superalloy and its influence on the fatigue performance. Two different microstructures have been found on the surface layer, i.e. recast crystals and redeposited amorphous oxide, resulting from solidification of melt and plasma respectively under the laser-waterjet interaction. Mechanical twinning structures were also revealed in the substrate due to the waterjet confined plasma shockwave impact.

Original language	English
Pages (from-to)	155-158
Number of pages	4
Journal	CIRP Annals - Manufacturing Technology
Volume	70
Issue number	1
DOIs	https://doi.org/10.1016/j.cirp.2021.03.007
Publication status	Published - Jan 2021

Keywords

Cutting
Laser
Surface integrity

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.cirp.2021.03.007

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title = "Surface formation mechanism in waterjet guided laser cutting of a Ni-based superalloy",

abstract = "Waterjet guided laser (WJGL) cutting is a relatively new technology for high-precision machining of difficult-to-cut materials. However, its material removal mechanism presents some unique features because of the interaction between laser, waterjet and workpiece. This paper investigates the surface formation mechanism in WJGL cutting of Ni-based superalloy and its influence on the fatigue performance. Two different microstructures have been found on the surface layer, i.e. recast crystals and redeposited amorphous oxide, resulting from solidification of melt and plasma respectively under the laser-waterjet interaction. Mechanical twinning structures were also revealed in the substrate due to the waterjet confined plasma shockwave impact.",

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author = "Zhirong Liao and Dongdong Xu and Dragos Axinte and Jeremie Diboine and Anders Wretland",

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year = "2021",

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AU - Liao, Zhirong

AU - Xu, Dongdong

AU - Axinte, Dragos

AU - Diboine, Jeremie

AU - Wretland, Anders

PY - 2021/1

Y1 - 2021/1

N2 - Waterjet guided laser (WJGL) cutting is a relatively new technology for high-precision machining of difficult-to-cut materials. However, its material removal mechanism presents some unique features because of the interaction between laser, waterjet and workpiece. This paper investigates the surface formation mechanism in WJGL cutting of Ni-based superalloy and its influence on the fatigue performance. Two different microstructures have been found on the surface layer, i.e. recast crystals and redeposited amorphous oxide, resulting from solidification of melt and plasma respectively under the laser-waterjet interaction. Mechanical twinning structures were also revealed in the substrate due to the waterjet confined plasma shockwave impact.

AB - Waterjet guided laser (WJGL) cutting is a relatively new technology for high-precision machining of difficult-to-cut materials. However, its material removal mechanism presents some unique features because of the interaction between laser, waterjet and workpiece. This paper investigates the surface formation mechanism in WJGL cutting of Ni-based superalloy and its influence on the fatigue performance. Two different microstructures have been found on the surface layer, i.e. recast crystals and redeposited amorphous oxide, resulting from solidification of melt and plasma respectively under the laser-waterjet interaction. Mechanical twinning structures were also revealed in the substrate due to the waterjet confined plasma shockwave impact.

KW - Cutting

KW - Laser

KW - Surface integrity

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Surface formation mechanism in waterjet guided laser cutting of a Ni-based superalloy

Abstract

Keywords

ASJC Scopus subject areas

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