AZ31 magnesium alloy tube manufactured by composite forming technology including extruded-shear and bending based on finite element numerical simulation and experiments
AZ31 magnesium alloy tube manufactured by composite forming technology including extruded-shear and bending based on finite element numerical simulation and experiments
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基于有限元数值模拟和实验的挤压-剪切和弯曲复合成形技术制造AZ31镁合金管
DOI：
10.1007/s00170-021-07242-9
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发表时间：
2021-05
期刊：
影响因子：
--
通讯作者：
Dingfei Zhang
中科院分区：
文献类型：
--
作者：
Hongjun Hu;Xing Hong;Ye Tian;Dingfei Zhang
提出了一种新的AZ 31镁合金薄壁管成形工艺。将直接挤压工艺与连续剪切弯曲工艺相结合，生产薄壁镁合金管材，简称“TESB”（tube.extrusion-shearing-bending）。采用实验和数值模拟相结合的方法对该工艺进行了研究，并利用Deform-3D模拟软件研究了温度、挤压应力和摩擦因素对成形过程的影响。并对成型产品的力学性能和晶粒度进行了测试。TESB技术能有效地细化镁合金管材的晶粒，提高产品的力学性能。通过模拟得到了较佳的实验挤出条件，在润滑条件下，挤出温度为400°C时制品性能较好。采用三维有限元模拟方法研究了变形镁合金在TESB过程中的塑性变形行为。数值结果表明，直接挤压和附加剪切能有效地提高材料的累积应变。实验表明，TESB工艺可使镁合金的组织细化到原始晶粒尺寸的50%，且组织分布更加均匀。与直接挤压法相比，TES工艺可显著提高镁合金的硬度。
This paper presents a new forming technology for manufacturing the AZ31 magnesium alloy thin-wall tube. The direct extrusion.process and continuous shearing-bending process are combined to produce thin-wall magnesium tube, abbreviated as “TESB” (tube.extrusion-shearing-bending). The process has been studied based on the combination of experiments and numerical simulations, and.the influences of temperatures, extrusion stresses, and friction factors on the forming process have been studied by Deform-3D.simulation. And the mechanical properties and the grain size of the formed product have been tested. TESB technology has been.proved to refine the grains of magnesium alloy tube effectively, and the mechanical property of the product can be improved. The.better experimental extrusion conditions were also obtained by simulation, and the properties of the products under the condition of.lubrication were better when the temperature was 400°C. Three-dimensional finite element modeling is used to investigate the.plastic deformation behaviors of wroughtmagnesiumalloy during TESB process. Numerical results indicate TES could increase the.cumulative strains effectively by direct extrusion and additional shearings. Experiments show that microstructures of magnesium.alloy fabricated by TESB process can be refined to 50%of the original grain size with more uniform distribution. TES process could.improve hardness of magnesium alloy obviously by comparing with which fabricated by direct extrusion.
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DOI：
10.1007/s00170-014-5999-9
发表时间：
2014-06
期刊：
The International Journal of Advanced Manufacturing Technology
影响因子：
--
作者：
H. Hu;H. Wang;Z. Zhai;Y.Y. Li;J. Fan;O. Zhongwen
通讯作者：
H. Hu;H. Wang;Z. Zhai;Y.Y. Li;J. Fan;O. Zhongwen
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DOI：
10.1007/s00170-013-5068-9
发表时间：
2013-06
影响因子：
3.4
作者：
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影响因子：
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通讯作者：
Langdon, Terence G.
影响因子：
6.2
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