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

被引：21

作者：

Liao, Zhirong ^{[1
]}

Xu, Dongdong ^{[1
]}

Axinte, Dragos ^{[1
]}

Diboine, Jeremie ^{[2
]}

Wretland, Anders ^{[3
]}

机构：

[1] Univ Nottingham, Fac Engn, Nottingham, England

[2] Synova SA, Duillier, Switzerland

[3] GKN Aerosp Engine Syst, Trollhattan, Sweden

来源：

CIRP ANNALS-MANUFACTURING TECHNOLOGY | 2021年 / 70卷 / 01期

基金：

欧盟地平线“2020”;

关键词：

Laser; Cutting; Surface integrity;

D O I：

10.1016/j.cirp.2021.03.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Waterjet guided laser (WJGL) cutting is a relatively new technology for high-precision machining of difficult-tocut 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. (c) 2021 CIRP. Published by Elsevier Ltd. All rights reserved.

引用

页码：155 / 158

页数：4

共 7 条

[1] Evaluation of surface integrity after high energy machining with EDM, laser beam machining and abrasive water jet machining of alloy 718 [J].