Energy Transfer Modes in Pulsed Laser Seam Welding

被引：24

作者：

Chelladurai, A. M. ^{[1
]}

Gopal, K. A. ^{[1
]}

Murugan, S. ^{[1
]}

Venugopal, S. ^{[1
]}

Jayakumar, T. ^{[1
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Met & Mat Grp, Kalpakkam 603102, Tamil Nadu, India

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2015年 / 30卷 / 02期

关键词：

Plasma; Penetration; Energy; Steel; Aspect-ratio; Transition; Surface; Modes; Pulse; Power-density; Laser; Keyhole; Nd:YAG; Conduction; 409; STAINLESS-STEEL; PROCESS VARIABLES; BEAM ENERGY; SPOT WELDS; ALUMINUM;

D O I：

10.1080/10426914.2014.965829

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A systematic parametric study has been made in pulsed Nd:YAG laser welding to understand the energy transfer modes. Four different energy transfer zones, namely conduction, transition, penetration, and keyhole, have been identified. The traditional classification of energy transfer modes based on the power density value of 10(6)W/cm(2) is not strictly applicable as the transfer mode varies with pulse duration. The threshold power density to form keyhole is not constant, but the threshold energy density has been found to be invariant around 2.4kJ/cm(2). The pulse duration has been optimized to be of about 8ms to achieve welds of higher aspect ratio.

引用

页码：162 / 168

页数：7

共 27 条

[1]

Asibu E.K., 2009, Principles of Laser Materials Processing

[2] Comparison of continuous wave and pulsed wave laser welding effects [J].

Assuncao, Eurico ;

Williams, Stewart .

OPTICS AND LASERS IN ENGINEERING, 2013, 51 (06) :674-680

[3] Interaction time and beam diameter effects on the conduction mode limit [J].

Assuncao, Eurico ;

Williams, Stewart ;

Yapp, David .

OPTICS AND LASERS IN ENGINEERING, 2012, 50 (06) :823-828

[4] Process control of laser conduction welding by thermal imaging measurement with a color camera [J].

Bardin, F ;

Morgan, S ;

Williams, S ;

McBride, R ;

Moore, AJ ;

Jones, JDC ;

Hand, DP .

APPLIED OPTICS, 2005, 44 (32) :6841-6848

[5]

Bransch H. N., 1994, WELDING RES S, V5, p141s

[6] A study of laser welding modes with varying beam energy levels [J].

Buvanashekaran, G. ;

Shanmugam, N. Siva ;

Sankaranarayanasamy, K. ;

Sabarikanth, R. .

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, 2009, 223 (05) :1141-1156

[7]

Dawes C, 1994, LASER WELDING PRACTI

[8] Direct observation of keyhole behaviour during pulse modulated high-power Nd:YAG laser irradiation [J].

Fujinaga, S ;

Takenaka, H ;

Narikiyo, T ;

Katayama, S ;

Matsunawa, A .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2000, 33 (05) :492-497

[9] Study on laser welding of fuel clad tubes and end plugs made of modified 9Cr-1Mo steel for metallic fuel of Fast Breeder Reactors [J].

Harinath, Y. V. ;

Gopal, K. A. ;

Murugan, S. ;

Albert, S. K. .

JOURNAL OF NUCLEAR MATERIALS, 2013, 435 (1-3) :32-40

[10]

Ion JC, 2005, LASER PROCESSING OF ENGINEERING MATERIALS: PRINCIPLES, PROCEDURE AND INDUSTRIAL APPLICATION, P1

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