Thermocapillary effects in a melted pool during laser surface treatment

D. Morvan; Francois Dominique Cipriani; Daniel Dufresne; A. Garino

doi:10.1117/12.26021

1 February 1991 Thermocapillary effects in a melted pool during laser surface treatment

D. Morvan, Francois Dominique Cipriani, Daniel Dufresne, A. Garino

Proceedings Volume 1397, 8th Intl Symp on Gas Flow and Chemical Lasers; (1991) https://doi.org/10.1117/12.26021
Event: Eighth International Symposium on Gas-Flow and Chemical Lasers, 1990, Madrid, Spain

Abstract

Laser surface treatment represents a promissing new technology for materials processing. The main advantage of lasers is constituted by the facility to deposite high density energy at the surface of a material which permits to obtain a narrow heat affected zone and low distortion. During the surface melting of a material, the heat flow in the melted pool is dominated by convective effects. The temperature gradient on the melted pool surface between the laser beam impact point and the pool boundary generates surface tension gradient and therefore a surface tangential strain which produces convective motions (Marangoni convection). In this paper we presents a numerical model of the thermocapillary flow in a melted pool created by a scanning CW laser. We analyse the effects of experimental conditions as scanning velocity and beam dimension upon the intensity of the thermocapillary flow, the dimensions and the shape of the melted zone.

Citation Download Citation

D. Morvan, Francois Dominique Cipriani, Daniel Dufresne, and A. Garino "Thermocapillary effects in a melted pool during laser surface treatment", Proc. SPIE 1397, 8th Intl Symp on Gas Flow and Chemical Lasers, (1 February 1991); https://doi.org/10.1117/12.26021

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available