Microstructures and tensile properties of AZ31 magnesium alloy by continuous extrusion forming process

2008 ◽  
Vol 486 (1-2) ◽  
pp. 295-299 ◽  
Author(s):  
Hui Zhang ◽  
Qiqi Yan ◽  
Luoxing Li
Keyword(s):  
Magnesium Alloy ◽  
Tensile Properties ◽  
Az31 Magnesium Alloy ◽  
Forming Process ◽  
Continuous Extrusion ◽  
Extrusion Forming

Microstructure of AZ31 Magnesium Alloy Produced by the CONFORM Process under Different Extrusion Wheel Velocities

2011 ◽  
Vol 189-193 ◽  
pp. 2609-2612 ◽  
Author(s):  
Jun Ying Yang ◽  
Bao Yun Song ◽  
Hai Shi Ning ◽  
Rong Fu
Keyword(s):  
Magnesium Alloy ◽  
Cross Section ◽  
Cross Sections ◽  
Extrusion Direction ◽  
Surface Region ◽  
Grain Structure ◽  
Az31 Magnesium Alloy ◽  
Continuous Extrusion ◽  
Conform Process ◽  
Extrusion Forming

It is widely known that the continuous extrusion forming (CONFORM) process can produce ultra-long seamless products of various cross-sections for aluminum, copper and their alloys. In this paper, the continuous extrusion of AZ31 magnesium alloy is achieved. The effect of extrusion wheel velocity on microstructure of extrusions is investigated. The results indicate that grain refinement is realized during CONFORM process. As the extrusion wheel velocity increases, the grain size at the center of a cross section perpendicular to the extrusion direction of an extrusion increases, and the grain structure tends to become uniform in the surface region.

scholarly journals Qualitative Research of AZ31 Magnesium Alloy Aircraft Brackets Produced by a New Forging Method

2016 ◽  
Vol 61 (2) ◽  
pp. 1003-1008 ◽  
Author(s):  
A. Dziubińska ◽  
A. Gontarz ◽  
K. Dziedzic
Keyword(s):  
Qualitative Research ◽  
Finite Element ◽  
Magnesium Alloy ◽  
Numerical Results ◽  
Experimental Results ◽  
Az31 Magnesium Alloy ◽  
Forming Process ◽  
Closed Die Forging ◽  
Selection Of ◽  
Good Agreement

AbstractThe paper reports a selection of numerical and experimental results of a new closed-die forging method for producing AZ31 magnesium alloy aircraft brackets with one rib. The numerical modelling of the new forming process was performed by the finite element method.The distributions of stresses, strains, temperature and forces were examined. The numerical results confirmed that the forgings produced by the new forming method are correct. For this reason, the new forming process was verified experimentally. The experimental results showed good agreement with the numerical results. The produced forgings of AZ31 magnesium alloy aircraft brackets with one rib were then subjected to qualitative tests.

Warm Hydroforming Process with Non-Uniform Heating for AZ31 Magnesium Alloy Tube

2010 ◽  
Vol 654-656 ◽  
pp. 739-742 ◽  
Author(s):  
Kenichi Manabe ◽  
Toshiji Morishima ◽  
Yu Ogawa ◽  
Kazuo Tada ◽  
Tsutomu Murai ◽  
...  
Keyword(s):  
Finite Element ◽  
Temperature Distribution ◽  
Magnesium Alloy ◽  
Tube Hydroforming ◽  
Az31 Magnesium Alloy ◽  
Fe Model ◽  
Uniform Heating ◽  
Forming Process ◽  
Alloy Tube ◽  
Warm Hydroforming

In this study, non-uniform heating approach in warm T-joint forming process is attempted for the AZ31 magnesium alloy tube. For this purpose, finite element simulation is performed to analyze the appropriate temperature distribution. The validity of the finite element(FE) model of T-joint tube hydroforming(THF) is verified by comparing the FE simulation and experimental results. Using this FE model, appropriate temperature distribution was suggested. In addition, it was showed that the wall thickness could be more uniform by optimizing the temperature condition.

scholarly journals Effect of Microstructural Factors on Tensile Properties of an ECAE-Processed AZ31 Magnesium Alloy

2003 ◽  
Vol 44 (4) ◽  
pp. 468-475 ◽  
Author(s):  
Yu Yoshida ◽  
Lawrence Cisar ◽  
Shigeharu Kamado ◽  
Yo Kojima
Keyword(s):  
Magnesium Alloy ◽  
Tensile Properties ◽  
Az31 Magnesium Alloy

The Modulus Mensuration of Yada Model and the Microstructure Simulation of Casting AZ31 Magnesium Alloy

2010 ◽  
Vol 97-101 ◽  
pp. 75-80
Author(s):  
Hong Bo Li ◽  
Mei Lu ◽  
Jun Ting Luo
Keyword(s):  
Magnesium Alloy ◽  
Hot Forming ◽  
Az31 Magnesium Alloy ◽  
Forming Process ◽  
Microstructure Transformation ◽  
Microstructure Simulation ◽  
Result Analysis

Both experimentation and calculation of the Yada model modulus of casting AZ31 magnesium alloy are provided in this paper. Based on revised Yada model, the microstructure simulation of precision forming inner gear is performed using Superform software. On the basisi of result analysis, the microstructure transformation of the casting magnesium alloy in the hot-forming process is forecasted in terms of revised Yada model.

scholarly journals Effect of Mn Content on Tensile Properties of Rolled AZ31 Magnesium Alloy Sheet

2004 ◽  
Vol 68 (6) ◽  
pp. 412-417 ◽  
Author(s):  
Yu Yoshida ◽  
Lawrence Cisar ◽  
Takayoshi Sekine ◽  
Shigeharu Kamado ◽  
Yo Kojima
Keyword(s):  
Magnesium Alloy ◽  
Tensile Properties ◽  
Alloy Sheet ◽  
Az31 Magnesium Alloy ◽  
Magnesium Alloy Sheet ◽  
Az31 Magnesium Alloy Sheet ◽  
Mn Content

Study on Spring-Back Effect with Various Temperature of Magnesium Alloy in Roll Forming Process

2014 ◽  
Vol 1016 ◽  
pp. 75-79 ◽  
Author(s):  
Dong Hong Kim ◽  
Dae Hwan Yoon ◽  
Hao Yu ◽  
Dong Won Jung
Keyword(s):  
Magnesium Alloy ◽  
High Temperatures ◽  
Alloy Sheet ◽  
Az31 Magnesium Alloy ◽  
Roll Forming ◽  
Spring Back ◽  
Forming Process ◽  
Explicit Finite Element ◽  
Back Angle ◽  
Roll Forming Process

AZ31 magnesium alloy sheets are usually performed at high temperatures of 200 to 250°C due to their unusual hexagonal close-packed structure and low ductility at room temperature. In this study, to predict the spring-back of AZ31 magnesium alloy sheets in a roll forming process subjected to high temperatures, so the spring-back phenomenon consider in various temperature using an explicit finite element code. Finally, the roll forming process for a magnesium alloy sheet at high temperatures was performed to verify the spring-back angle, which was then compared with the spring-back angle predictions of the FE simulation.

Numerical Simulation of the Effect of Feedstock Shape on Continuous Extrusion Process

2012 ◽  
Vol 472-475 ◽  
pp. 2004-2008 ◽  
Author(s):  
Li Chen ◽  
Bao Yun Song ◽  
Xin Bing Yun
Keyword(s):  
Metal Flow ◽  
Flow Characteristics ◽  
Extrusion Process ◽  
Forming Process ◽  
Section Shape ◽  
Wheel Torque ◽  
Metal Deformation ◽  
Continuous Extrusion ◽  
Extrusion Forming ◽  
3D Software

Since the appearance of the continuous extrusion process, the section shape of the feedstock is round. The shape of the feedstock directly affects metal deformation and metal flow characteristics during the continuous extrusion process. Based on finite element method (FEM), using the Deform-3D software, this paper simulates continuous extrusion forming process for copper bus bar, and analyzes the effect of different feedstock shape on metal flowing temperature, velocity, rotating torque. The results show that: the size of the rectangular feedstock must be within a reasonable range, otherwise the continuous extrusion process can not be established; the rectangular feedstock is benefit to the flow uniformity comparing with the round feedstock; the temperature of the billet and tooling with rectangular feedstock is lower than that with round feedstock, as the feedstock width increases, the temperature decreases and the area of high temperature becomes smaller; the change of the feedstock shape and size has no effect on the extrusion wheel torque value.

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