Laser-assisted high-speed finish turning of superalloy Inconel 718 under dry conditions

被引：143

作者：

Attia, H. ^{[1
,2
]}

Tavakoli, S. ^{[2
]}

Vargas, R. ^{[1
]}

Thomson, V. ^{[2
]}

机构：

[1] Natl Res Council Canada, Aerosp Mfg Technol Ctr, Montreal, PQ, Canada

[2] McGill Univ, Dept Mech Engn, Montreal, PQ, Canada

来源：

CIRP ANNALS-MANUFACTURING TECHNOLOGY | 2010年 / 59卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Cutting; Laser; Machinability; NICKEL-BASED ALLOYS; CERAMIC TOOLS;

D O I：

10.1016/j.cirp.2010.03.093

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Inconel 718 (IN718) is used in aerospace applications due to its superior mechanical properties. This study investigates the high-speed machinability of this material under laser-assisted machining (LAM) and dry conditions. Finish turning tests were performed for cutting speeds up 500 m/min and feeds up to 0.5 mm/rev, using focused Nd:YAG laser beam and ceramic tool (SiAlON). At optimum machining conditions, nearly eight-fold increase in material removal rate and significant improvement in the tool life and surface finish were achieved, compared to conventional machining. The mechanisms of tool failure were identified. SEM analysis and microstructure examination of machined surfaces revealed the improvement in the surface integrity under LAM conditions. (C) 2010 CIRP.

引用

页码：83 / 88

页数：6

共 11 条

[1] Laser-assisted machining of Inconel 718 with an economic analysis [J].