Abstract
That lasers can be used to melt and quench metallic alloys was realized some time ago [1], but active exploitation of the method has started only recently. Most of the present activities fall into one of two categories, namely work with scanned lasers [2] and work with pulsed lasers [3]. In the first group, a continous beam, typically from a high-power CO2 laser (a few 100 W to several kW), is scanned across a bulk metal workpiece, sometimes covered with a thin coating. In this process, often referred to as “laser glazing”, the coating and/or part of the bulk metal is molten by the beam and subsequently resolifies as the beam moves on. Sharply focussed beams must normally be used to overcome the high reflectivity of metals in the far infrared, but extended areas of a workpiece can be treated by applying partially overlapping line scans. Scanning velocities are usually limited by the absorbed power and range from tens of cm/s to a few m/s. Cooling rates in a scanned-laser heated surface region are comparable to those of mechanical quenching up to about 106 K/s—and enable glass formation only for easy glass formers [2], For all its technological potential, no physically new phenomena have been observed with laser glazing.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
W. A. Elliot, R. P. Gagliano, G. Krauss, Met. Trans. 4, 2031–2037 (1973).
Breinan E. M., Kear B. H., Banas C. M., Physics Today, November 1976, 44–50;
Becker R., Sepold G., Ryder P. L., Scripta Metall. 14, 1283–1285 (1980);
Bergmann H. W., Mordike B. L., J. Mat. Science 16, 863–869 (1981);
Yoshioka H., Asami K., Hashimoto K., Scripta Metall. 18, 1215–1218 (1984).
M. von Allmen, K. Affolter, M. Wittmer, in: Laser and Electron Beam — Solid Interactions and Material Processing (J. Gibbons, T. Sigmon, L. D. Hess, eds.), Mat. Res. Soc. Symp, Proc. 1, 559–566, Elsevier-North Holland (1981);
M. von Allmen, in: Glassy Metals II, (H. Beck, H. J. Güntherodt, eds.), Topics in Applied Physics 53, 261–281, Springer Verlag (1983);
M. von Allmen, E. Huber, A. Blatter, K. Affolter, Int. J. Rapid Solidif. 1, 15–25 (1984);
A. Blatter, M. von Allmen, in Amorphous Metals — Noneguilibrium Processing (M. von Allmen, ed.), MRS(E) Symp. Proc. 2, 73–78, Editions de Physigue (1984).
M. von Allmen, S. S. Lau, M. Mäenpää, B. Y. Tsaur, Appl. Phys. Lett. 36, 205–207 (1980)
ibid. 37, 84–86 (1980);
K. Affolter, M. von Allmen, H. P. Weber, M. Wittmer, J. Noncryst. Solids 55, 387–393 (1983);
K. Affolter, M. von Allmen, Appl. Phys. A 33, 93–96 (1984).
U. Kambli, M. von Allmen, N. Saunders, A. P. Miodownik, Appl. Phys. A 36, 189–192 (1985);
M. von Allmen, K. Affolter, in: Rapidly Solidified Metastable Mat.-erials, (B.H. Kear, B.C. Giessen, eds.), Mat. Res. Soc. Symp. Proc. 28, 81–86, Elsevier-North Holland (1984).
D. R. Uhlmann, J. Noncryst. Sol. 7, 337–348 (1972);
H. A. Davies, Phys. Chem. Glasses 17, 159–173 (1976);
P. Ramachandrarao, B. Cantor, R. W. Cahn, J. Mat. Science 12, 2488–2502 (1977).
A. Blatter, M. von Allmen, Phys. Rev. Lett. 13, 2103–2106 (1985).
X. L. Yen, K. Samwer, W. L. Johnson, Appl. Phys. Lett. 42, 242–244 (1983);
R. B. Schwarz, W. L. Johnson, Phys. Rev. Lett. 51, 415–417 (1983);
M. von Rossum, M-A. Nicolet, W. L. Johnson, Phys. Rev. B, 29, 5498–5501 (1984).
A. R. Miedema, J. Less-Common Met. 41, 283–298 (1975)
ibid. 46, 67–83 (1976);
N. Saunders, submitted to Int. J. Rapid. Solidif. (1985).
A. Blatter, M. von Allmen, to be published.
E. Huber, M. von Allmen, Phys. Rev. B 28, 2979–2984 (1983)
ibid. 31, 3338–3342 (1985).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1987 Martinus Nijhoff Publishers, Dordrecht
About this chapter
Cite this chapter
von Allmen, M. (1987). Materials Amorphized by Laser Irradiation. In: Lüscher, E., Fritsch, G., Jacucci, G. (eds) Amorphous and Liquid Materials. NATO ASI Series, vol 118. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-3505-1_38
Download citation
DOI: https://doi.org/10.1007/978-94-009-3505-1_38
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-8066-8
Online ISBN: 978-94-009-3505-1
eBook Packages: Springer Book Archive