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| 1 | Electromagnetic Control of the Weld Pool Dynamics in Partial Penetration Laser Beam Welding of Aluminium Alloys显示文摘The main characteristic feature of deep penetration laser beam welding is a large temperature difference between the plasma cavity(keyhole)in the weld pool centre and the melting/solidification front.Large temperature gradients in the weld pool result in very intensive thermocapillary(Marangoni)convection.The weld pool surface width becomes very large and unstable.However,an externally applied oscillating magnetic field can stabilize the surface of the melt.In the present work this technology was used to stabilize the weld pool surface in partial penetration 4.4 kW Nd:YAG laser beam welding of AW-5754 aluminium alloy in PA position.An AC magnet was mounted on the laser welding head.The oscillating magnetic field was oriented perpendicular to the welding direction.It was found that the AC magnetic field can drastically reduce the surface roughness of welds.X-ray image analysis shows a drastic reduction of welds porosity.This effect can be explained as a result of electromagnetic rectification of the melt. | V.Avilov A.Schneider M.Lammers A.Gumenyuk M. Rethmeier | 2012 | Journal of Iron and Steel Research(International)2012，19，S1： | 3 |
| 2 | Numerical sensitivity analysis of welding-induced residual stress depending on variations in continuous cooling transformation behavior显示文摘连续冷却的用法在数字焊接的转变(CCT ) 图模拟现状。不过,说明在分别地导致不同 CCT 行为和 CCT 图的材料的化学作文提供限制。因此,在发展中的剩余压力上在 CCT 图分析变化的影响是必要的。在现在的纸,在剩余压力的数字计算以后的四张 CCT 图和他们的效果为煤气的金属弧焊(GMAW ) 焊接的广泛地使用的结构的钢 S355J2 + N 被调查过程。而非执行 CCT 行为的任意的调整,四个有理由的数据集合被用作输入到数字计算:在 Sysweld 数据库,通过 Gleeble dilatometry 测试获得的试验性的数据,和 TTT/CCT 预言可得到的数据从 JMatPro 和爱迪生焊接研究所(EWI ) 计算了虚拟加入门软件。执行数字分析就不同 CCT 图而言在剩余压力导致了显著偏差。而且,改进失真和剩余的预言的可能性基于 CCT 强调行为被讨论。 | C. HEINZE C. SCHWENK M. RETHMEIER J. CARON | 2011 | Frontiers of Materials Science2011，5，2： | 3 |
| 3 | Simulation of inverse heat conduction problems in fusion welding with extended analytical heat source models显示文摘纸为温度地论述围住的体积热来源和相应功能分析的表情。这里考虑的力量密度分布正常、指数、寓言。来源由于熔化和团结为象焊接的弧,激光横梁,电子横梁,等等,在焊接水池的传送对流以及潜伏的热一样的真实的热来源建模。热来源模型的参数是未知的 priori 并且不得不被解决一个反的热传导问题评估。为在靶子焊接的精明的 3D 温度地的功能分析的技术被开发。建议技术使更加为数据输入和答案减少全部的时间可能。它与激光横梁焊接钢盘子的一个例子被表明。 | V. A. KARKHIN A. PITTNER C. SCHWENK M. RETHMEIER | 2011 | Frontiers of Materials Science2011，5，2： | 2 |
| 4 | Predicting the influence of groove angle on heat transfer and fluid flow for new gas metal arc welding processes显示文摘 | J. Chen C. Schwenk C.S. Wu M. Rethmeier | 2011 | International Journal of Heat and Mass Transfer2011，，1： | 1 |
| 5 | Simultaneous measurement of tool torque, traverse force and axial force in friction stir welding显示文摘 | H. Su C.S. Wu A. Pittner M. Rethmeier | 2013 | Journal of Manufacturing Processes2013，，4： | 1 |
| 6 | Comparison of analytical and numerical welding temperature field calculation显示文摘 | W. Perret C. Schwenk M. Rethmeier | 2009 | Computational Materials Science2009，，4： | 1 |
| 7 | Laser Beam Welding of Aluminum Alloys Under the Influence of an Electromagnetic Field显示文摘 | A. Schneider V. Avilov A. Gumenyuk M. Rethmeier | 2013 | Physics Procedia2013，，： | 1 |
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