Investigation of tension and compression behavior of AZ80 magnesium alloy
Investigation of tension and compression behavior of AZ80 magnesium alloy
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DOI：
10.1016/j.matdes.2013.03.080
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发表时间：
2013-09-01
影响因子：
8.4
通讯作者：
Badnava, H.
中科院分区：
文献类型：
--
作者：
Fereshteh-Saniee, F.;Fallah-Nejad, Kh;Badnava, H.
镁合金的变形需要在高温下进行，因此研究镁合金在高温下的变形行为非常必要。本文对AZ80合金进行了实际试验，包括高温、不同应变率下的拉伸和压缩试验。由于这种合金对温度和应变率敏感，因此拉伸试验很难进行。传统的压缩试验应在零摩擦条件下进行，但这种条件是不可能准备的。因此，采用凸出修正系数和数值修正系数来消除表面之间存在的摩擦效应。还对标准试件进行了高温、不同应变率下的拉伸试验。使用布里奇曼校正因子校正颈缩现象的影响，并使用有限元软件进行模拟。 T形压缩试验也用于评估高温下的摩擦参数。 (c) 2013 Elsevier Ltd. 保留所有权利。
Magnesium alloy deformation should be carried out at high temperature and it is essential to investigate the deformation behavior of these alloys at high temperature. In this paper, practical tests are conducted on AZ80 alloy which includes tension and compression tests at high temperature and different strain rates. As this alloy is sensitive to temperature and strain rate, tension tests are difficult to carry out. The traditional compression test should be conducted in zero-friction condition but such a condition is impossible to prepare. Therefore, bulge correction factor and numerical correction factor are used to eliminate the friction effect which exists between the surfaces. Tensile tests are also carried out on the standard specimens at high temperature and different strain rates. The effect of necking phenomenon is corrected using Bridgman correction factor and is simulated using finite element software. Also T-shape compression test is used to valuate friction parameter at high temperatures. (c) 2013 Elsevier Ltd. All rights reserved.