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| 1 | Investigation on Electron Beam Welded Copper to AISI 316 Stainless Steel Joints显示文摘Joints of copper and stainless steels are used in a er ospace applications. Production of these joints by fusion welding faces many dif ficulties. This may be due to the differences in their physical, metallurgical a nd mechanical properties. Electron Beam Welding (EBW) process has been found to be especially well suited in this area. Selection of the appropriate welding par ameters needs thorough investigations. These parameters include: preheat tempera ture (℃), welding current (I w), focusing current (I F), welding spee d (V), height between the gun and workpiece surface (H), scan width (S w) and shift distance (S). The present work aims firstly, setting the pr oper welding conditions to get sound joint between commercially pure copper (C10 200) and AISI 316 stainless steel plates 8 mm thickness. Secondly, investigate t he effect of Electron Beam (EB) shift, single-sided and double-sided welds on the mechanical, metallurgical and chemical properties of the weld bead. Due to t he high difference in thermal conductivity between copper and stainless steel, E lectron Beam (EB) was shifted towards copper with different values. These values were ranged from 0.3 to 0.9 mm in welding without preheating of copper plate an d from 0.1 to 0.4 mm with preheating. Number of joints were welded using variabl e EBW parameters in view to obtain the sound weld bead. These parameters are as follows: gradual reduction I w=51 to 49 mA, I F=845 mA, V=8 mm/sec , H=130 mm, S w=500 μm and S=0.4 mm. The investigation has shown t hat, the copper (C10200) plate must be preheated to get sound welded joint with AISI 316 stainless steel using the EBW process. The tensile fracture in all wel ded samples occurred in copper plate away from the weld bead. This reflects that the weld bead tensile strength is greater than the copper strength. The EB shif t has slight effect on hardness distribution through weld bead. The hardness val ue (H v) reduces in gradual manner from stainless steel hardness to copper one. The EB shift distance has no significant effect on the impact toughness. | El-Hebeary M R Megahed H Elziady N | 2002 | 厦门大学学报(自然科学版)2002，41，S1： | 2 |
| 2 | A two-dimensional thermoelasticity problem for a half space subjected to heat sources显示文摘 | Sherief H H Megahed F A | 1999 | Internat J Solids and Structures1999，36，9： | 1 |
| 3 | A simplified technique for shakedown limit load determination显示文摘 | ABDALLA H F MEGAHED M M YOUNAN M Y | 2007 | Nuclear Engineering and Design2007，237，1213： | 1 |
| 4 | A simplified technique for shakedown limit load determination of a large square plate with a small central hole under cyclic biaxial loading显示文摘 | ABDALLA H F MEGAHED M M MOHAMMAD M | 2011 | Nuclear Engineering andDesign2011，241，3： | 1 |
| 5 | Shakedown analysis of 90-degree mitred pipe bends显示文摘 | KORBA A G MEGAHED M M ABDALLA H F | 2013 | European Journal of MechanicsA/Solids2013，40，： | 1 |
| 6 | A self-tuning resonator for vibration energy harvesting显示文摘 | ABOULFOTOH N A ARAFA M H MEGAHED S M | 2013 | Sensors and Actuators:A2013，201，5： | 1 |
| 7 | Evaluation of spur gear mesh compliance using the finite element method显示文摘 | Arafa M H Megahed M M | | 0，，06： | 1 |
| 8 | The effect of cationic surfactants on the corrosion of aluminum in oxalic acid 显示文摘 | El-Etre A Y Megahed H E Bdallah M A | 2004 | Corrosion Prevention&control2004，，： | 1 |
| 9 | A two dimensional thermoelasticity problem for a half space subjected to heat sources显示文摘 | Sherief H H Megahed F A | 1999 | Internatioual Journal of Solids and Structures1999，36，： | 1 |
| 10 | A self-tuning resonator for vibration energy harvesting 显示文摘 | I Aboulfotoh N A Arafa M H Megahed S M | 2013 | Sensor Actuat A-Phys2013，201，5： | 1 |
| 11 | A simplified technique for shake- down limit load determination 显示文摘 | Abdalla H F Megahed M M | 2007 | Nuclear Engineering and De- sign2007，237，： | 1 |
| 12 | A simplified technique for shakedown limit load determination of a large square plate with a small central hole under cyclic biaxial loading显示文摘 | ABDALLA H F MEGAHED M M YOUNAN M Y A | 2011 | Nuclear Engineering and Design2011，241，3： | 1 |
| 13 | Vibration control of two degrees of freedom system using variable inertia vibration absorbers:Modeling and simulation显示文摘 | Megahed S M Abd E1-Razik A K H | 2010 | Journal of Sound and Vibration2010，329，23： | 1 |
| 14 | Exponential CUSUM Charts With Estimated Control Limits显示文摘 | Zhang M Megahed F M Woodall W H | 2014 | Quality and Reliability Engineering International2014，30，2： | 1 |
| 15 | On the biology of Bemisia tabaci(Gennadius)(Homoptera:Aleyrodidae)显示文摘 | AZAB A K MEGAHED M M EL-MIRAWI D H | 1971 | Bull Soc Entomol Egypt1971，55，： | 1 |
| 16 | A review and perspective on control charting with image data显示文摘 | MEGAHED F M WOODALL W H CAMELIO J A | 2011 | Journal of Quality Technology2011，43，2： | 1 |
| 17 | Fracture toughness characterization of austempered ductile iron produced using both conventional and two-step austernpering processes显示文摘 | Elsayed A H Megahed M M Sadek A A | 2009 | Materials and Design2009，30，6： | 1 |
| 18 | Homocysteine and other cardiovascular risk {actors in patients with lichen planus显示文摘 | Saleh N Samir N Megahed H | 2014 | J Eur Acad Dermatol Venereol2014，28，11： | 1 |
| 19 | A simplified technique for shakedown limit load determination显示文摘 | Abdalla H F Megahed M M Younan M Y A | 2007 | Nuclear Engineering and Design2007，237，12： | 1 |
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