A simple analytical solution is developed for calculating the residual stresses which occur as a result of the laser transformation hardening of steel surfaces. The solution is based mainly on taking account of the dilatation resulting from the martensitic transformation and allows the influence of the many and varied parameters involved in laser transformation hardening (beam size and intensity, material properties, composition, etc.) to be readily assessed. Satisfactory agreement between the theoretical predictions and reported experilnental measurements of residual stress is obtained.
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References
1.
SINGHH. B., COPLEYS. M., and BASSM.: Metal!. Trans., 1981, 12A, 138–140.
2.
GNANAMUTHUD. S., SHAWC. B.Jr, LAWRENCEW. E., and MITCHELLM. R.: in ‘Laser—solid interactions and laser processing’, AIP Conf. Proc. 50, (ed. FerrisS. D.et al.), 173-187; 1979, New York, American Institute of Physics.
3.
YAOS.-C. and ERICSSONT.: University of Linkoping, personal communication, 1984.
4.
TALLL.: in ‘Residual stresses in welded construction and their effects’, 49-62; 1977, Abington, The Welding Institute.
5.
INOUET., WANGZ. G., and YAMAGUCHIT.: Proc. Conf. on ‘Calculation of internal stresses in heat treatment of metallic materials’, Linkoping, May 1984, University of Linkoping, (ed. AtteboE. and EricssonT.), 387–398; Mater. Sci. Technol., 1985, 1, 872-876.
6.
DENISS., SIMONA., and BECKG.: Trans. Iron Steel Inst. Jpn, 1982, 22, 505.
7.
GREENWOODG. W. and JOHNSONR. H.: Proc. R. Soc., 1965, A283, 403–422.
8.
INOUET., NAGAKIS., KISHINOT., and MONKAWAM.: Ing. Arch., 1981, 50, 315.
9.
LEBLONDJ.-B., MOTTETG., DEVAUXJ., and DEVAUXJ.-C.: Proc. Conf. on ‘Calculation of internal stresses in heat treatment of metallic materials’, Linkoping, May 1984, University of Linkoping, (ed. AtteboE. and EricssonT.), 191-214; Mater. Sci. Technol., 1985, 1, 815–822.
10.
INOUET. and WANGZ. G.: Proc. Int. Conf. on ‘Numerical methods in industrial forming processes’, Swansea, July 1982, University College of Swansea.
11.
TIMOSHENKOS. P. and GOODIERJ. N.: ‘Theory of elasticity’, 3rd edn, ch. 3; 1970, New York, McGraw-Hill.
12.
ASHBYM. F. and EASTERLINGK. E.: Acta Metal!., 1984, 32, 1935–1948.
