Experimental Characterization and Material Modelling of an AZ31 Magnesium Sheet Alloy at Elevated Temperatures under Consideration of the Tension-Compression Asymmetry
Experimental Characterization and Material Modelling of an AZ31 Magnesium Sheet Alloy at Elevated Temperatures under Consideration of the Tension-Compression Asymmetry
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考虑拉压不对称性的高温下 AZ31 镁板合金的实验表征和材料建模
DOI：
10.1088/1742-6596/896/1/012019
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Dykiert
中科院分区：
文献类型：
--
作者：
Behrens;Bouguecha;Dykiert
镁合金在航空航天和汽车工业中作为建筑材料具有很大的潜力。然而，关于描述镁合金板材塑性行为的随温度变化的材料参数的研究现状在文献中很少，关于屈服准则的准确表述以及描述镁板材合金在拉深过程中高温塑性行为的适当的表征试验还有待定义。因此，本文通过方便的力学试验(如拉伸、压缩和双轴试验)表征了AZ31镁合金板材在180~230℃温度范围内的塑性行为。通过这种方式，估计了各向异性和硬化行为以及屈服轨迹的拉-压不对称性之间的差异。此外，使用上述试验的评估数据，两个不同的屈服准则已被参数化：常用的Hill‘48和正交各向异性屈服准则CPB2006，CPB2006是专门为具有六方密排点阵结构的材料而开发的，能够描述关于拉应力和压应力状态的不对称屈服行为。最后对两种屈服函数进行了数值模拟，以评估材料模型的准确性。
Magnesium sheet alloys have a great potential as a construction material in the aerospace and automotive industry. However, the current state of research regarding temperature dependent material parameters for the description of the plastic behaviour of magnesium sheet alloys is scarce in literature and accurate statements concerning yield criteria and appropriate characterization tests to describe the plastic behaviour of a magnesium sheet alloy at elevated temperatures in deep drawing processes are to define. Hence, in this paper the plastic behaviour of the well-established magnesium sheet alloy AZ31 has been characterized by means of convenient mechanical tests (eg tension, compression and biaxial tests) at temperatures between 180 and 230 C. In this manner, anisotropic and hardening behaviour as well as differences between the tension-compression asymmetry of the yield locus have been estimated. Furthermore, using the evaluated data from the above mentioned tests, two different yield criteria have been parametrized; the commonly used Hill'48 and an orthotropic yield criterion, CPB2006, which was developed especially for materials with hexagonal close packed lattice structure and is able to describe an asymmetrical yielding behaviour regarding tensile and compressive stress states. Numerical simulations have been finally carried out with both yield functions in order to assess the accuracy of the material models.
高温双轴拉伸应力条件下镁合金AZ31屈服轨迹的实验测定
DOI：
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发表时间：
2008
期刊：
Production Engineering
影响因子：
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作者：
M. Geiger;M. Merklein;W. Hußnätter;M. Grüner
通讯作者：
M. Grüner
DOI：
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发表时间：
2015
期刊：
ATZ - Automobiltechnische Zeitschrift
影响因子：
--
作者：
Martin Hillebrecht;B. Kiel;Dietmar Letzig;Sangbong Yi
通讯作者：
Sangbong Yi
与 Hilfe von Schichtstauch- 和 Zugversuchen 一起了解 AZ31 镁合金的飞行状态
DOI：
--
发表时间：
2013
期刊：
影响因子：
--
作者：
B. Behrens;A. Bouguecha;T. Huinink;I. Peshekhodov;T. Matthias;J. Moritz;J. Schrödter
通讯作者：
J. Schrödter