| 000 | 02984cam a2200349 a 4500 | ||
|---|---|---|---|
| 003 | EG-GiCUC | ||
| 005 | 20250223031649.0 | ||
| 008 | 170211s2016 ua ho f m 000 0 eng d | ||
| 040 |
_aEG-GiCUC _beng _cEG-GiCUC |
||
| 041 | 0 | _aeng | |
| 049 | _aDeposite | ||
| 097 | _aPh.D | ||
| 099 | _aCai01.13.12.Ph.D.2016.Ah.E | ||
| 100 | 0 | _aAhmed Ramadan Bassiouni Seada | |
| 245 | 1 | 0 |
_aEffect of tempcore process and Ni, Si and Mn/S contents on mechanical properties and copper precipitates in recycled steel rebars / _cAhmed Ramadan Bassiouni Seada ; Supervised Iman Salah Eldin Elmahallawi , Taha Mohamed Mattar , Dieter Georg Senk |
| 246 | 1 | 5 | _aتأثير التحكم بالمعالجة بالتبريد السريع و محتوى النيكل و السليكون و المنجنيز على الخواص الميكانيكية و ترسيبات النحاس فى صلب حديد التسليح |
| 260 |
_aCairo : _bAhmed Ramadan Bassiouni Seada , _c2016 |
||
| 300 |
_a130 P. : _bfacsimiles , photographs ; _c30cm |
||
| 502 | _aThesis (Ph.D.) - Cairo University - Faculty of Engineering - Department of Metallurgical Engineering | ||
| 520 | _aThe accumulation of tramp elements (Cu, Pb, Ni, Sn and Sb) in steel as a result of excessive use of scrap will affect the mechanical properties of steel as reduction of hot ductility, failure at bending test and hot shortness of steel during casting, reheating and rolling process. A survey was done to estimate how far is the problem of residual elements appearing in Egyptian steel, and the effect of its presence on steel manufacturing and its mechanical properties including impact toughness, ductility, bendability and hot ductility. The aim of this work is to study how to avoid the hot shortness problem caused by copper, by adding nickel, silicon and nickel plus silicon to form solid solution or intermetallic compounds which have higher melting points. Studying the effect of Tempcore process on hot shortness, which prevents the diffusion of tramp elements (Cu, Pb and Sb) forming low melting point compounds at grain boundaries. Study the effect of sulphur on copper precipitation and copper hot shortness. The results showed that Tempcore process forms supersaturated solid solution of copper in ferrite and uniform fine Cu precipitates which improve the ductility. The addition of nickel, silicon and nickel plus silicon mitigates the negative effect of copper on hot ductility. Finally, the results showed that the presence of copper as a tramp element will increase the ductile brittle transition temperature | ||
| 530 | _aIssued also as CD | ||
| 653 | 4 | _aHot ductility | |
| 653 | 4 | _aHot shortness | |
| 653 | 4 | _aTramp element | |
| 700 | 0 |
_aDieter Georg Senk , _eSupervisor |
|
| 700 | 0 |
_aIman Salah Eldin Elmahallawi , _eSupervisor |
|
| 700 | 0 |
_aTaha Mohamed Mattar , _eSupervisor |
|
| 856 | _uhttp://172.23.153.220/th.pdf | ||
| 905 |
_aNazla _eRevisor |
||
| 905 |
_aSamia _eCataloger |
||
| 942 |
_2ddc _cTH |
||
| 999 |
_c59790 _d59790 |
||