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首页> 外文期刊>Journal of Materials Engineering and Performance >Improvement of Formability of 6xxx Aluminum Alloys Using Incremental Forming Technology
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Improvement of Formability of 6xxx Aluminum Alloys Using Incremental Forming Technology

机译：使用增量成形技术改善6xxx铝合金的成形性

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摘要

Aluminum sheet is becoming increasingly common as an automotive body panel material. The heat-treatable aluminum alloys of the 6xxx series are widely used as an outer panel material, due to their ability to precipitation harden during the paint-bake cycle, resulting in improved dent resistance. Increasing the formability of these alloys would allow for multiple parts of less complex geometry to be combined into a single more complex part, thereby avoiding the costs associated with any subsequent joining operations. Incremental forming is a process that can improve material formability through the use of short, recovery heat treatments applied between increments of deformation. The objective of this study was to investigate the incremental forming behavior of 6111-T4 an alloy, which is often used for exterior body panel applications. Interrupted tensile testing was used to simulate the incremental forming process. The effect of different heat-treatment parameters on mechanical properties was analyzed. The heat treat regimen developed for uniaxial testing was then applied to a series of plane strain tests using a hemispherical punch, to simulate the more complex states of stress found in forming operations.
机译：铝板作为汽车车身板材料变得越来越普遍。 6xxx系列可热处理铝合金由于在烤漆过程中沉淀硬化而被广泛使用，因此被广泛用作外板材料，从而提高了耐凹痕性。这些合金的可成形性的提高将允许将几何形状不太复杂的多个部分组合为一个单一的复杂部分，从而避免了与任何后续连接操作相关的成本。增量成型是一种可以通过使用在变形增量之间进行的短暂的恢复热处理来提高材料可成型性的工艺。这项研究的目的是研究6111-T4合金的增量成型行为，该合金常用于车身面板应用。中断拉伸测试用于模拟增量成型过程。分析了不同热处理参数对机械性能的影响。然后将开发用于单轴测试的热处理方案应用于使用半球形冲头的一系列平面应变测试，以模拟在成形操作中发现的更复杂的应力状态。

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