Theoretical and experimental studies on laser transformation hardening of steel by customized beam

Michael K.H. Leung; H. C. Man; J. K. Yu

doi:10.1016/j.ijheatmasstransfer.2007.03.022

Author(s)

Michael K.H. Leung
H. C. Man
J. K. Yu

Detail(s)

Original language	English
Pages (from-to)	4600-4606
Journal / Publication	International Journal of Heat and Mass Transfer
Volume	50
Issue number	23-24
Publication status	Published - Nov 2007
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.ijheatmasstransfer.2007.03.022 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-34748891373&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(87cd11c5-2750-4d72-a44b-9d211a55977f).html

Abstract

An exact solution was developed for a quasi-steady-moving-interface heat transfer problem in laser transformation hardening by a beam customized to a flat-top rectangular shape. The absorption and release of the latent heat were taken into account. The solution provided the body temperature, heating rate, and subsequent cooling rate. Using the IT and CCT diagrams, the rapid austenitization and pearlitic/martensitic phase transformation were determined for prediction of the hardening effect. In the experimental study, a diffractive optical kinoform (DOK) was used to customize a conventional Gaussian laser spot beam to a flat-top rectangular beam. A reasonable agreement between the theoretical predictions and the experimental measurements was obtained. © 2007 Elsevier Ltd. All rights reserved.

Research Area(s)

Exact solution, Flat-top rectangular beam, Laser transformation hardening, Moving phase-change interface

Citation Format(s)

[ RIS ] [ BibTeX ]

Theoretical and experimental studies on laser transformation hardening of steel by customized beam. / Leung, Michael K.H.; Man, H. C.; Yu, J. K.

In: International Journal of Heat and Mass Transfer, Vol. 50, No. 23-24, 11.2007, p. 4600-4606.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

Leung, MKH, Man, HC & Yu, JK 2007, 'Theoretical and experimental studies on laser transformation hardening of steel by customized beam', International Journal of Heat and Mass Transfer, vol. 50, no. 23-24, pp. 4600-4606. https://doi.org/10.1016/j.ijheatmasstransfer.2007.03.022

Leung, M. K. H., Man, H. C., & Yu, J. K. (2007). Theoretical and experimental studies on laser transformation hardening of steel by customized beam. International Journal of Heat and Mass Transfer, 50(23-24), 4600-4606. https://doi.org/10.1016/j.ijheatmasstransfer.2007.03.022

Leung MKH, Man HC, Yu JK. Theoretical and experimental studies on laser transformation hardening of steel by customized beam. International Journal of Heat and Mass Transfer. 2007 Nov;50(23-24):4600-4606. doi: 10.1016/j.ijheatmasstransfer.2007.03.022

Leung, Michael K.H. ; Man, H. C. ; Yu, J. K. / Theoretical and experimental studies on laser transformation hardening of steel by customized beam. In: International Journal of Heat and Mass Transfer. 2007 ; Vol. 50, No. 23-24. pp. 4600-4606.