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008 190817s2019 ua dho f m 000 0 eng d
040 _aEG-GiCUC
_beng
_cEG-GiCUC
041 0 _aeng
049 _aDeposite
097 _aM.Sc
099 _aCai01.13.12.M.Sc.2019.Ha.D
100 0 _aHayam Abokhasha Ali
245 1 0 _aDevelopment of carbidic austempered ductile iron (CADI) /
_cHayam Abokhasha Ali ; Supervised Abdelhamid Ahmed Hussein , Adel Abdelmoneim Saleh Nofal , Elsayed Mahmoud Elbanna
246 1 5 _aتطوير الحديد الزهرالمرن المحتوي علي الكربيدات
260 _aCairo :
_bHayam Abokhasha Ali ,
_c2019
300 _a75 P. :
_bcharts , facsimiles , photographs ;
_c30cm
502 _aThesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Metallurgical Engineering
520 _aCADI is ductile iron containing carbides that is subsequently austempered to produce an ausferritic matrix with an engineered amount of carbides. The properties of this material are improved by alloying and also by varying the austempering heat treatment process parameters, and by dynamic and static condition. The presence of carbides is expected to promote an increase in the abrasion wear resistance, but on the other hand toughness is expected to decrease. Therefore, to maximize the performance of the CADI alloys to be used in a number of wear applications such as grinding balls, a good balance between abrasion resistance and toughness. To score this goal, four ways were achieved. The first one involved dynamic solidification, i.e. the introduction of mechanical vibration during solidification. The second involved alloying with Nb (1 %). The third was involved the combined action of Nb-alloying and dynamic solidification. Finally, heat treatment was carried out which included a two austempering temperature, in order to study the role of retained austenite during abrasion
530 _aIssued also as CD
653 4 _aCADI
653 4 _aImpact toughness
653 4 _aWear Resistance
700 0 _aAbdelhamid Ahmed Hussein ,
_eSupervisor
700 0 _aAdel Abdelmoneim Saleh Nofal ,
_eSupervisor
700 0 _aElsayed Mahmoud Elbanna ,
_eSupervisor
905 _aAsmaa
_eCataloger
905 _aNazla
_eRevisor
942 _2ddc
_cTH
999 _c73360
_d73360