Co-Extrusion of Aluminium-Titanium-Compounds
Co-Extrusion of Aluminium-Titanium-Compounds
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铝钛复合材料的共挤压
DOI：
10.4028/www.scientific.net/kem.491.67
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
F. Bach
中科院分区：
文献类型：
--
作者：
N. Grittner;B. Striewe;A. von Hehl;D. Bormann;M. Hunkel;H. Zoch;F. Bach
不同金属材料的组合使得能够在全球和局部范围内设计具有定制特性的轻质结构，并为先进解决方案（尤其是飞机和汽车领域）提供巨大潜力。钛合金具有特别高的机械强度和良好的耐腐蚀性，而铝合金则具有相当低的密度，因此具有更大的减轻重量的潜力。然而，在传统的熔接之后，例如激光束焊接后，可能会出现热影响区、孔隙或晶粒生长，从而损害局部性能 [1, 2]。相比之下，通过共挤出等固态连接技术可以避免这些缺点。因此，共挤压对于结合铝和钛基合金的长产品来说是一种有吸引力的解决方案。目前的研究重点是铝和钛的共挤压，其中钛是插入铝型材中的增强元素。研究中检查了两种不同的坯料变体，即在铝坯料中一体模制的钛芯和插入空心钻孔铝坯料中的钛芯。使用不同的材料组合进行了实验，Al99.5 与 2 级钛以及 AlSi1MgMn 与 Ti6Al4V。除了化合物的机械性能之外，还介绍了粘合区域的形成。
The combination of different metallic materials enables the design of lightweight structures with tailor-made properties at global as well local scale and offers great potential for advanced solutions especially for the aircraft and automobile sector. Whereas titanium alloys show particular high mechanical strength and good corrosion resistance, aluminium alloys provide a considerable lower density and consequently higher potential for weight savings. However, after conventional fusion joining, e.g. after laser beam welding, heat affected zones, porosity or grain growth may occur and impair the local properties [1, 2]. In contrast, by solid-state joining techniques like co-extrusion these disadvantages can be avoided. Therefore co-extrusion exhibits an attractive solution for long products combining aluminium and titanium based alloys. Current investigations have been focused on the co-extrusion of aluminium and titanium, where titanium is the reinforcing element that is inserted in aluminium profiles. Two different billet variants were examined in the investigations, a titanium-core integrally moulded in the aluminium-billet and titanium-core inserted in a hollow drilled aluminium-billet. Experiments were made with different material combinations, Al99.5 with titanium grade 2 and AlSi1MgMn with Ti6Al4V. Beside mechanical properties of compound the formation of bonding zone are presented.
通过有限元分析对挤压过程中的剪切区进行定位
DOI：
10.4028/www.scientific.net/kem.424.221
发表时间：
2010
期刊：
Key Engineering Materials
影响因子：
--
作者：
Kammler
通讯作者：
Kammler