Effect of Laser Surface Treatment on Some Mechanical Properties of Low Carbon Steel | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 30, Issue 12, July 2012, Pages 271-283 PDF (572.22 K) | ||
| DOI: 10.30684/etj.2012.57264 | ||
| Authors | ||
| Asaad K. Hamza; Enaam O.Hasuon; Khansaa D. Salman | ||
| Abstract | ||
| This research aims to study the effect of localized laser surface treatment on mechanical behavior of low carbon steel. Laser Cw Nd : YAG was used in the treatment hardening of the specimens for different laser energy (2.7,3.3,4.37100J ), with time interval for the beam (10-2 sec) and the laser intensity(4500,5500,7100 Watt/mm2) . Different mechanical tests were achieved Static and Dynamic on the specimens which were surface treated .Static tests included ( Tensile test, Microhardness test) ,While the dynamic test included (Impact test ). The results show that the mechanical properties for low carbon steel H[.hx strength by(0.9,10,25.5%) , ultimate tensile strength by(6.4,16.24,24.59%),while the increment fracture stress by (12,17.28,34.87%),also increment in microhardness by (3.4, 5 , 23% )and toughness by (4.3,10.86,20.8 %). Some of mechanical properties for low carbon steel reduce with increasing in laser energy which show in Young modulus (26.06,40.89,50.8%), Rigidity modulus by (25,40.5,48.99 %) , Poisson s, ratio (1.29,2.34,3.69%) . | ||
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