000			01750nam a22001697a 4500
999			_c21835 _d21835
005			20221006165810.0
008			221006b ||||| |||| 00| 0 eng d
020			_ahbk
082			_a531.1 _bM4644
100			_aMuhammad Qasim, _bM. Phil Physics, _c2015-2017 _dSupervised by Dr. Naveed Ahmad
245			_aMechanical properties of irradiated aluminium alloy _c/ Muhammad Qasim
260			_aLahore : _bDivision of Science & Technology, University of Education, _c2018
300			_a81 p. _eCD
520			_aAluminium alloy specimens were irradiated in vacuum (10-6 torr) with Nd-YAG laser for different number of shots ranging from 100 to 500 with incremental steps of 100 shots. The optical, structural and tensile properties of the specimens were studied using optical microscope, X-ray diffractometer (XRD) and tensile testing machine. Laser ablation of the specimen resulted in boiling, splashing and crater formation on its surface. The size of crater initially increases and then gradually decreases with increase in number of laser shots. The depth of irradiated area is found to be increases by increasing the number of laser shots. The comparison of XRD analysis shows that an anomalous trend in the peak intensity, crystallite size and dislocation line density of the specimen irradiated with different number of shots. Mechanical properties of both irradiated and unirradiated specimens were investigated using tensile testing machine. The changes in fracture strength and ultimate tensile strength were found to be inconsistent with increasing the number of laser shots. Keywords: Aluminium alloy, Nd-YAG laser, X-ray Diffraction, Optical microscopy.
650			_aPhysics--Mechanical Properties--Aluminium Alloy
942			_cTH