针对2219-T87铝合金双频复合脉冲变极性TIG(DP-VPTIG)深熔焊接过程,采用高速图像采集和多物理场数值仿真技术对熔池传热传质行为进行研究,解耦了双频脉冲电流和方波变极性电流的作用机制,并探究了DP-VPTIG电弧对接头组织性能的影响。结果表明:双频脉冲能有效激发熔池内小孔,方波变极性电流能保证焊接过程稳定,DP-VPTIG可实...
Aluminium /Aluminum 2219 alloy can be machined in the annealed condition. In the heat treated condition, this alloy is very difficult to machine. Oil base lubrication is used to perform machining operations.FormingAluminium /Aluminum 2219 alloy can be formed using conventional techniques....
搅拌摩擦焊的方法对2219-O铝合金进行焊接,并 对接头的微观组织及力学性能进行研究。 1试验材料和方法 试验材料选用5mm厚2219-O铝合金板,试 收稿日期:2004-09-22 样尺寸为200mm 50mm 5mm,其宽度方向为板 材的轧制方向。板材的化学成分和力学性能如表1 ...
自主研制静止轴肩搅拌摩擦焊(SSFSW)焊具,并且成功应用于高强铝合金2219-T6的焊接。当静止轴肩相对深压与搅拌针根部的小轴肩形成“内浅外深”的状态时,更能充分发挥SSFSW的作用。对接头焊缝成形、显微组织、显微硬度及拉伸性能分别开展了试验研究。结果表明:SSFSW消除了焊缝减薄问题,以搅拌针起主要的搅拌作用有效地...
Microstructure and mechanical properties changing rules of 2219 Al-alloy HAZ(heat-affected zone) with twin wire welding were studied using welding thermal simulation method.The result shows that the temperature interval of soften zone is 400-500 ℃ for 2219 Al-alloy twin wire welding,and 450 ℃ ...
Alloy grade:2A12/2A14/2024/2A50/2219 3 Series aluminum alloy Alloy grade:3A21/3003 4 Series aluminum alloy Alloy grade:4047 5 Series Aluminum Alloy Alloy grade:5052/5A02/5A06/5083/5754 7 Series aluminum alloy Alloy grade:7075/7A04/7050/7A09 < 1 > proceed page Contact...
Electron beam welds of aluminum alloy 2219 offer much higher strength compared to gas tungsten arc welds of the same alloy and the reasons for this have not been fully explored. In this study both types of welds were made and mechanical properties were evaluated by tensile testing and pitting ...
2219 aluminum alloy rings are important part of liquid cryogenic rocket fuel tanks. Residual stress is inevitably introduced in the forming process of the rings due to the nonlinear thermomechanical coupling conditions, which will affect its mechanical p
This study focuses on fabricating 2219 aluminum alloys using DE-GMA based AM which can reduce the heat input to deposited layers while maintaining the same deposition efficiency. Microstructure and mechanical properties of the as-built walls are studied. The main conclusions are as follows: Declaratio...
The conventional aging experiments and the low density electric pulse current (LDEPC for short) added aging experiments, with the self-made positive and negative alternating pulse power equipment, were conducted to study the influence of LDEPC on the dynamics of phase transformation in 2219 aluminum...