Transactions of Materials and Heat Treatment

Title：Comparative study on technology of new type of backward extrusion with traditional backward extrusion

Authors： Li Hong Xue Yong Zhao Xi Zhang Zhimin

Unit： North University of China

KeyWords： aluminum alloy 2A12 backward extrusion mechanical properties grain refinement large plastic deformation

ClassificationCode：

year,vol(issue):pagenumber：2016,41(7):34-37

Abstract：

The traditional backward extrusion experiment and the new type of backward extrusion experiment with large plastic deformation were carried out by two sets of dies respectively，and two kinds of aluminum alloy 2A12 cups were obtained. Furthermore, based on FE simulation, the deformation process was simulated by Deform-3D finite element simulation software, and the deformation and strain of the billets were compared. The mechanical properties, microstructures of samples for the two kinds of cups were comparatively studied by tensile test and metallurgical test. The results show that the effect on the grain refinement is more obvious during metal extrusion forming process through the new type of backward extrusion, and a better mechanical performance can be obtained with finer and more uniform grain size of the cups. Therefore, the new type of backward extrusion process can obviously improve the mechanical properties of the cup.

Funds：

山西省高等学校科技创新项目（2015160）

李宏（1989-），男，硕士研究生

Reference：

[1]Shatermashhadi V, Manafi B, Abrinia K, et al. Development of a novel method for the backward extrusion[J]. Materials & Design, 2014, 62: 361-366.

[2]Aarinia K, Gharibi K. An investigation into the backward extrusion of thin walled cans[J]. International Journal of Material Forming, 2008, 1(1): 411-414.

[3]Farhoumand A, Ebrahimi R. Analysis of forward–backward-radial extrusion process[J]. Materials & Design, 2009, 30(6): 2152-2157.

[4]毕见强,孙康宁,刘睿，等.等效应变量对等径角挤压的2A12铝合金力学性能的影响[J].塑性工程学报,2005,12(6):42-44,48.

Bi J Q,Sun K N, Liu R，et al. Effects of variables such as equal channel angular extrusion of 2A12 aluminum alloy mechanical properties [J]. Journal of Plasticity Engineering, 2005,12(6):42-44,48.

[5]GB/T 228.1-2010，金属材料拉伸试验第1部分：室温试验方法[S].

GB/T 228.1-2010，Metallic material-Tensile testing-Part 1:Method of test at room temperature[S].

[6]孙颖迪,陈秋荣.AZ31镁合金电池筒反挤压工艺仿真研究[J].锻压技术,2015,40(3):46-52.

Sun Y D，Chen Q R .AZ31 magnesium alloy battery tube backward extrusion process simulation[J]. Forging & Stamping Technology, 2015,40(3):46-52.

[7]谭喜平，宋东福，郑开宏，等.机械振动对再生铝合金组织和力学性能的影响[J]. 稀有金属,2014,38(2): 185-192.

Tan X P,Song D F,Zheng K H,et al.Microstructure and mechanical properties of aluminum alloy recycled by cast with mechanical vibration[J]. Chinese Journal of Rare Metal,2014,38(2):185-192.

Service：

【This site has not yet opened Download Service】【Add Favorite】