000			03733ntm a2200361 i 4500
999			_c97945 _d97951
003			MY-KuUP
005			20251125110131.0
006			t||||fr|||| 00| 0
007			ta
008			221027s2022 my a|||frm||| 00| 0 eng d
020			_aTHE0009379(Local) _qhardback
040			_aUMP _beng _cUMP _erda
090			_aFTKMA .Q29 2022 r Thesis
100	0		_aMohd Qayyum Akbar Abdul Halim, _eauthor.
245	1	0	_aDevelopment and characterisation of lanthanum-based bulk metallic glass (bmg) with localised ductilisation / _cMohd Qayyum Akbar Abdul Halim
264		1	_aKuantan, Pahang : _bUMP, _c2022
264		4	_c© 2022
300			_axv, 95 pages : _billustrations (some color) ; _c30 cm. + _e1 CD ROM
336			_atext _2rdacontent
337			_aunmediated _2rdamedia
337			_acomputer _2rdamedia
338			_avolume _2rdacarrier
338			_acomputer disc _2rdacarrier
347			_atext file _bPDF _2rda
500			_aFaculty of Mechanical and Automotive Engineering Technology
502			_aThesis (Master of Science) -- Universiti Malaysia Pahang – 2022
504			_aIncludes bibliographical references
520	3		_aBulk Metallic Glass (BMG) offers properties superior to the present industrialised metal alloy. The properties exceed crystalline metal in terms of hardness, strength, fatigue, and a higher level of stress-strain relation. In this research, the shear band phenomenon was observed through the compression loading on the La61.4Al15.9Ni11.35Cu11.35 BMG samples. The phenomenon was observed through the scanning electron microscope (SEM) and field emission scanning electron microscope (FESEM). In another part of the research, BMG samples with localised ductilisation areas were created through laser processing. The laser process focused the energy into the heat-affected zone (HAZ) and was chosen as the localised heating method. These samples were then made into functionally graded material (FGM) that were based on lanthanum BMG. One of the essential achievements presented in the current work was the optimum laser processing parameters of the La61.4Al15.9Ni11.35Cu11.35 BMG. In addition, ample amount of characterisation testing towards the La61.4Al15.9Ni11.35Cu11.35 BMG samples for expanding the existing knowledge towards this specific BMG alloy system were presented. This would aid with the advancement of BMG manufacturability as the crystalline ductile area. Other than that, other exciting findings under this work for the La61.4Al15.9Ni11.35Cu11.35 BMG were the fracto-emission phenomenon and the fracture response with its microstructure elements. The disadvantage of BMG is the brittleness inherently gained from its amorphous structure, following the shear band phenomenon, which could cause a premature fracture. The advancement of BMG production technology in recent years using laser processing has added an option to the methods available for BMG creation. In future research, post-metal processing procedures on standard metal alloy, such as riveting, screwing and forging, could be prepared on the BMG localised area. The current restrictions of BMG are the size is as-cast inherent brittleness, which affected the machinability and high-temperature process, which affected the meta-stability of the BMG. The capability to join or machine the BMG part to other crystalline metal or BMG parts would increase the part size, shape and BMG practicality. Localised ductilisation of BMG that produced FGM BMG could be a feasible technique to solve the future BMG manufacturability issue.
610	2	0	_aFaculty of Mechanical and Automotive Engineering Technology _xDissertations
650		0	_aUniversities and colleges _xDissertations
650		0	_aTheses
942			_2lcc _cTHESIS