Influence of Pre-straining and Heat Treatment on the Yield Surface of Precipitation Hardenable Aluminum Alloys

Influence of Pre-straining and Heat Treatment on the Yield Surface of Precipitation Hardenable Aluminum Alloys
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预应变和热处理对沉淀硬化铝合金屈服面的影响

DOI:
10.1016/j.phpro.2014.08.070
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发表时间:
2014
期刊:
Physics Procedia
影响因子:
--
通讯作者:
Merklein
Merklein
中科院分区:
--
文献类型:
--
作者:
Lechner;Hofmann;Kuppert;Merklein

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沉淀硬化铝合金是最重要的轻质材料之一。然而,与传统的深冲钢相比,它们的应用范围受到低成形性的限制。因此,制造技术研究所发明了一种新的、创新的方法来提高铝合金在多阶段成形操作中的成形性,称为中间热处理(IHT)。基于两个成形步骤之间的短期激光辅助热处理,可以局部调整机械性能并实现优化的强度分布。为保证该技术的成功应用,必须分析热处理工艺对力学性能的影响。对于多道次成形过程的模拟,材料的屈服面是非常重要的。在本文中,将介绍组合预应变和随后的短期激光辅助热处理对屈服面的影响。
Precipitation hardenable aluminum alloys are some of the most important lightweight materials. However, their range of applications in comparison to conventional deep drawing steels is limited by the low formability. Therefore, a new and innovative approach to enhance the formability of aluminum alloys in multistage forming operations was invented at the Institute of Manufacturing Technology, called intermediate heat treatment (IHT). Based on a short-term, laser-assisted heat treatment between two forming steps, it is possible to locally adapt the mechanical properties and realize an optimized strength distribution. For the successful application of the technology, the influence of the heat treatment on the mechanical properties has to be analyzed. Concerning the simulation of a multistage forming process, in particular, the yield surface of the material is very important. Within this paper, the influence of a combined pre-straining and a subsequent short-term, laser-assisted heat treatment on the yield surface will be presented.
通过局部激光热处理调整铝的材料性能
DOI: 10.1016/j.phpro.2012.10.034
发表时间: 2012
期刊: Physics Procedia
影响因子: --
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DOI: --
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影响因子: --
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