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tube hydroforming of magnesium alloys at elevated

Automotive component development by means of

3. Tube hydroforming Grey et al. in 1939 [33] formed a T-joint using a seamless copper tube and applied for and achieved a US patent in the 1940s, which gave an indication of the coming pe- riod of tube hydroforming. Until now, the forming of T-shape used for a joint is still a problem in hydroforming. Figure 1 shows one of the schemes of tube

Crystal Plasticity Modeling of the Slip Systems Activity

Understanding the role of the slip systems and their evolution with temperature is critical to the correct simulation of the mechanical behavior of magnesium alloys. In this paper, relations are proposed for evolution of the CRSS values of different slip systems and strain-rate sensitivity factor, Evolution of Hydroforming Technologies and Its Hwang, Y. H. Su and B. J. Chen, Tube hydroforming of magnesium alloys at elevated temperatures, Journal of Engineering Materials and Technology 132(3) (2010) 031012. ISI , Google Scholar 156.

Finite Element Analysis on Warm Hydroforming of

OSTI.GOV Journal Article:Finite Element Analysis on Warm Hydroforming of Rectangular Mg Alloy Cups with a Step Cavity Formability and microstructure of AA6061 Al alloy tube about 150% expansion for aluminum alloy tube and 50% expansion for steel tube were achieved when formed at 480 °C and 1100 °C, respectively. Formability of several engineering metal tubes has been tested in HMGF process [10]. The microstructures of AZ31 magnesium alloy tube before and after deformation have been investigated by EBSD, with

Friction Tests in Magnesium Tube Hydroforming at Elevated

Because magnesium alloys have very poor formability at room temperature, it is essential to manufacture a part from Magnesium alloys at elevated temperatures. The aim of this paper is to present a friction test method to evaluate the performance of different kinds of lubricants and determine their coefficients of friction at elevated temperatures in tube hydroforming of magnesium alloys. Hydroforming of Lightweight Aluminum and Magnesium Hydroforming is a relatively new forming process that employs the use of a pressurized fluid to expand tubular blanks into a forming die to create efficiently shaped parts. This project will design, fabricate, and test a practical, elevated-temperature, rapid-production, hydroforming system for the production of complex-shaped, lightweight aluminum and magnesium components.

Investigation on deformation behavior of magnesium alloy

Magnesium alloys have been known as the next generation material for lightweight body structures. Pulsating hydroforming is an effective method to improve magnesium alloy sheet forming performance, and the formed parts are characterized by lightweight, high-specific strength and stiffness. JMMP Free Full-Text Hot Gas Forming of Aluminum Alloy Hwang et al. [ 5] examined the T-shape hydroforming of an AZ61 magnesium alloy at 150 and 300 °C. Chan and Kot [ 6] studied the formability of an AZ31B magnesium alloy made by three different loading paths for quadrilateral tubular components fabricated by the warm tube hydroforming process.

Magnesium - Fraunhofer IWU

Due to its low density (1.78 g/cm³) and high properties of strength and stiffness as well as its abundance, magnesium gains importance as a material for lightweight construction, even in the form of wrought alloys. Magnesium Tube Hydroforming - NASA/ADSThe formability of two magnesium alloys, viz. AZ31 and ZM21 has been experimentally tested using the IHP forming process. A new die set up for hot IHP forming has been designed and the process experimentally investigated for temperatures up to 400 °C. Both alloys exhibit an increase in formability with increasing forming temperature.

Magnesium tube hydroforming - Liewald - 2008

Apr 16, 2008 · Magnesium alloys reveal a good strengthtoweight ratio in the family of lightweight metals and gains potential to provide up to 30 % mass savings compared to aluminium and up to 75 % compared to steel. The use of sheet magnesium alloys for auto body applications is however limited due to the relatively low formability at room temperature. Metals Special Issue :Latest Hydroforming Technology of Other tube hydroforming related hydro-piercing, hydro-joining, hydro-flanging and hydro-inlaying are also important topics. The aim of this Special Issue is to present the latest achievements in various tube and sheet hydroforming processes and other tube processing technology and Innovation.

Progress on High Pressure Pneumatic Forming and Warm

Abstract:Complex structural tubular components of ium and Magnesium alloy can be obtained at a certain temperature by high pressure pneumatic forming (HPPF) with gas medium or warm hydroforming with pressurized liquid medium. At 800°C, through experimental research on HPPF of TA18 Ti-alloy tube with expansion ratio of 50%, the influence of axial feeding on thickness distribution of the workpiece R&D Update:Warm forming of alloys in the auto industryWarm hydroforming of aluminum alloys combines the advantages of warm forming with hydromechanical deep drawing, and it has been investigated in laboratory studies. In this process, the die set, the blank, and the fluid used for pressurizing the blank

Sheet Metal Forming:Processes and Applications - Google

This practical and comprehensive reference gives the latest developments on the design of sheet forming operations, equipment, tooling, and process modeling. Individual chapters cover all major sheet forming processes such as blanking, bending, deep drawing, and more. Process modeling using finite element analysis is described in one chapter and discussed in all appropriate chapters. T-Shape Tube Hydroforming of Magnesium Alloys With Dec 09, 2011 · Experiments of T-shape warm hydroforming of magnesium alloy AZ61 tubes with a 1/2 outlet diameter ratio are conducted. Loading paths determined by the proposed adaptive simulation algorithm is adopted in the tube hydroforming (THF) experiments.

Wrought Magnesium:A 21st Century Outlook

Hydroforming is another technology that has helped to enable metals of limited formability, such as high-strength steel and titanium, to break into the automotive market on a wider scale. Researchers at Ohio State University are working to develop an elevated- temperature tube hydroforming process for aluminum and magnesium alloys.9Study on y-shape tube hydroforming of magnesium alloys at Jun 12, 2010 · A commercial finite element code of DEFORM 3D is used to simulate the plastic deformation of AZ61 magnesium alloy tube during a y-shape hydroforming process at elevated temperatures. The effects of loading paths with different feeding speed ratios and initial tube positions on the contact area at the counter punch surface at the bulge stage are discussed.

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