Surface Analysis Correlated with Structural and Mechanical Properties of Laser Irradiated Brass


Brass targets were irradiated with various laser pulses of Excimer laser ranging from 1200 to 3000 for constant fluence of 3.4 J/cm2 in oxygen atmosphere (100 Torr). The surface morphology and crystallographic analyses were performed by using Scanning Electron Microscope (SEM) and X-Ray Diffractometer (XRD). SEM analysis reveals the formation of laser-induced micro-sized cavities, bumps, cones and wave-like ridges with non-uniform shape and density distribution. These features are formed for all number of pulses; however with increasing number of pulses from 1200 to 2400, the density of cavities decreases whereas, the wave-like ridges become more pronounced and bump-formation is vanished. For maximum number of 3000 shots, the appearance of cones and wave-like ridges becomes diffusive, whereas the density and size of cavities increase again. XRD analysis demonstrates that no new phases are formed in irradiated brass. However, the change in peak intensity along with lower and higher angle shifting is observed which is attributed to generation of laser induced stresses. The Yield Stress (YS), Ultimate Tensile Strength (UTS) as well as Microhardness increase monotonically with increasing number of laser pulses.

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Ahmad, S. , Bashir, S. , Yousaf, D. , Ali, N. and Hussain, T. (2015) Surface Analysis Correlated with Structural and Mechanical Properties of Laser Irradiated Brass. Materials Sciences and Applications, 6, 23-32. doi: 10.4236/msa.2015.61004.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Jain, I.P. and Agarwal, G. (2011) Ion Beam Induced Surface and Interface Engineering. Surface Science Reports, 66, 77-172.
[2] Kim, H.S., Kim, W.Y. and Song, K.H. (2012) Effect of Post-Heat-Treatment in ECAP Processed Cu-40%Zn Brass. Alloys and Compounds, 536S, S200-S203.
[3] Liu, X., Du, D. and Mourou, G. (1997) Laser Ablation and Micromachining with Ultrashort Laser Pulses. Journal of Quantum Electronics, 33, 1706-1716.
[4] Bashir, S., Rafique, M.S. and Haq, F. (2007) Laser Ablation of Ion Irradiated CR-39. Laser and Particle Beams, 25, 181-191.
[5] Bashir, S., Vaheed, H. and Mahmood, K. (2013) Nanosecond Pulsed Laser Ablation of Brass in a Dry and Liquid-Confined Environment. Applied Physics, A110, 389-395.
[6] Lin, Z.Z.P. and Ren, L. (2014) The Mechanical Properties and Microstructures of AZ91D Magnesium Alloy Processed by Selective Laser Cladding with Al Powder. Optics and Laser Technology, 60, 61-68.
[7] Kazakevich, P.V., Simakin, A.V., Shafeev, G.A., Monteverde, F. and Wautelet, M. (2007) Phase Diagrams of Laser-Processed Nanoparticles of Brass. Applied Surface Science, 253, 7724-7728.
[8] Tam, K.F., Cheng, F.T. and Man, H.C. (2002) Laser Surfacing of Brass with Ni-Cr-Al-Mo-Fe Using Various Laser Processing Parameters. Materials Science and Engineering A, 325, 365-374.
[9] Ahmad, S., Bashir,S., Ali, N., Kalsoom, U., Yousaf, D., Haq, F., Naeem, A., Ahmad, R. and Rahman M.K. (2014) Effect of Ion Irradiation on the Surface, Structural and Mechanical Properties of Brass. Nuclear Instruments and Methods in Physics Research B, 325, 5-10.
[10] Perez, D. and Lewis, L.J. (2002) Ablation of Solids under Femtosecond Laser Pulses. Physical Review Letters, 89, 255504-255508.
[11] Chrisey, D.B. and Hubler, G.K. (1994) Pulsed Laser Deposition of Thin Films. John Wiley & Sons Inc., Hoboken.
[12] Korner, C., Mayerhofer, R., Hartmann, M. and Bergmann, H.W. (1996) Physical and Material Aspects in Using Visible Laser Pulses of Nanosecond Duration for Ablation. Applied Physics A, 63, 123-131.
[13] Sanchez, F., Morenza, J.L., Aguiar, R., Delgado, J.C. and Verela, M. (1996) Structure Growth on Silicon Exposed to ArF Excimer Laser Irradiation. Applied Physics Letters, 69, 620-622.
[14] Kang, H.W., Lee, H. and Welch, A.J. (2008) Laser Ablation in a Liquid-Confined Environment Using a Nanosecond Laser. Journal of Applied Physics, 103, Article ID: 083101.
[15] Bashir, S., Rafique, M.S. and Husinsky, W. (2012) Femtosecond Laser-Induced Subwavelength Ripples on Al, Si, CaF2 and CR-39. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 275, 1-6.
[16] Ali, N., Bashir, S., Kalsoom, U., Akram, M. and Mahmood, K. (2013) Effect of Dry and Wet Ambient Environment on the Pulsed Laser Ablation of Titanium. Applied Surface Science, 270, 49-57.
[17] Dauscher, A., Feregotto, V., Cordier, P. and Thorny, A. (1996) Laser Induced Periodic Surface Structures on Iron. Applied Surface Science, 96, 410-414.
[18] Truong, S.L., Levi, G., Verduraz, F.B., Petrovskaya, A.V., Simakin, A.V. and Shafeev, G.A. (2007) Generation of Nanospikes via Laser Ablation of Metals in Liquid Environment and Their Activity in Surface-Enhanced Raman Scattering of Organic Molecules. Applied Surface Science, 254, 1236-1239.
[19] Wang, Z., Zhu, L., Li, W., Xu, H. and Liu, H. (2013) Superhydrophobic Surfaces on Brass with Controllable Water Adhesion. Surface & Coatings Technology, 235, 290-296.
[20] Choi, D., Shinavski, R.J., Steffier, W.S. and Spearing, S.M. (2005) Residual Stress in Thick Low-Pressure Chemical-Vapor Deposited Polycrystalline SiC Coatings on Si Substrates. Journal of Applied Physics, 97, Article ID: 074904.
[21] Latif, A., Rehman, M.K., Rafique, M.S. and Bhatti, K.A. (2011) Surface Morphologic and Structural Analysis of IR Irradiated Silver. Physica B: Condensed Matter, 406, 1713-1716.
[22] Wang, L., Ji, S. and Sun, J. (2006) Effect of Nitriding Time on the Nitrided Layer of AISI 304 Austenitic Stainless Steel. Surface & Coatings Technology, 200, 5067-5070.
[23] Rahman, M.K., Butt, M.Z., Samuel, A. and Siraj, K. (2010) Investigation of Laser Irradiation Effects on the Hardness of Al 5086 Alloy under Different Conditions. Vacuum, 85, 474-479.
[24] Shanmugan, S. and Mutharasu, D. (2012) An Effect of N+ Ion Bombardment on the Properties of CdTe Thin Films. Radiation Physics and Chemistry, 81, 201-207.
[25] Bashir, S., Rafique, M.S. and Husinsky, W. (2011) Surface Topography of Ultrashort Laser Irradiated CaF2. Radiation Effects and Defects in Solids: Incorporating Plasma Science and Plasma Technology, 166, 30-34.
[26] Song, B., Dong, S., Deng, S., Liao, H. and Coddet, C. (2014) Microstructure and Tensile Properties of Iron Parts Fabricated by Selective Laser Melting. Optics and Laser Technology, 56, 451-460.
[27] Jung, P. and Ullmaier, H. (1990) Effects of Light-Ion Irradiation on Mechanical Properties of Metals and Alloys. Journal of Nuclear Materials, 174, 253-263.
[28] Ghauri, I.M. and Afzal, N. (2007) Effects of Neutron Irradiation on the Stress Relaxation Rate in Al-Cu-Mg Alloy. Journal of Physics D: Applied Physics, 40, 6044-6047.
[29] Wang, C., Zhou, H., Zhang, Z., Zhao, Y., Cong, D., Meng, C., Zhang, P. and Ren, L. (2013) Mechanical Property of a Low Carbon Steel with Biomimetic Units in Different Shapes. Optics & Laser Technology, 47, 114-120.

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