000			02653cam a2200325 a 4500
003			EG-GiCUC
008			180303s2017 ua h f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aPh.D
099			_aCai01.13.13.Ph.D.2017.Sh.E
100	0		_aSherif Ali Abdelrahman Ali
245	1	0	_aEffect of nanostructure on the mechanical properties of steel alloys / _cSherif Ali Abdelrahman Ali ; Supervised Fawzya Kouta , Iman Elmahallawi , Taha Mohamed Mattar
246	1	5	_aتأثير البنية النانوية على الخصائص الميكانيكية لسبائك الصلب
260			_aCairo : _bSherif Ali Abdelrahman Ali , _c2017
300			_a113 P. : _bfacsimiles ; _c30cm
502			_aThesis (Ph.D.) - Cairo University - Faculty of Engineering - Department of Mechanical Design and Production
520			_aIn this work, the nano structure has been attained in the studied steel through applying two different techniques. First methodology used is based on adding the nano sized inoculants particles to the molten of low carbon steel AISI 1020 (In ladle inoculation process). While, the second method is aimed at creating of nano sized bainitic structure of medium carbon steel by adopting the alloy's design, followed by low temperature isothermal transformation. For the in mould inoculation process SiC nano sized inoculant powders were added to the molten low carbon steel through specific ladle treatment technology. SiC provides a homogeneous dissociation in the metal matrix, generating of silicate inclusions that act as a nuclei for the grain structure causing the ductility increment. At the meantime, its dissociation acts positively on increasing the pearlite volume fraction, multiplying the tensile strength and the wear resistance properties. On the other hand, Si3N4 nano reinforcements were used as the second nano inoculants to the molten low carbon 1020 through ladle treatment process, aiming to replace the spheroidizing process in order to obtain spheroidized cementite. The existence of spheroidized cementite is desirable to before applying the severe cold rolling process. Si3N4 nano inoculant was used in order to nucleate the cementite, and modifying the morphology to a new globular cementite
530			_aIssued also as CD
653		4	_aNano-inoculant
653		4	_aSilicon carbide
653		4	_aSilicon nitride
700	0		_aFawzya Kouta , _eSupervisor
700	0		_aIman Elmahallawi , _eSupervisor
700	0		_aTaha Mohamed Mattar , _eSupervisor
905			_aNazla _eRevisor
905			_aSamia _eCataloger
942			_2ddc _cTH
999			_c65243 _d65243