Abstract
This paper was on the forming characteristics of AZ 31B Mg alloy in a combined forward–backward extrusion (CFBE) at warm temperatures. Both experimental studies and thermomechanical finite element analyses were performed. A finite element analysis model coupled with damage evolution was presented. Based on our previous work, the forward extrusion ratio, backward extrusion ratio, forming temperature, and punch speed were chosen as the most important process parameters. Two punch speeds of 2 mm/s and 20 mm/s were examined for the forming temperatures of 180 °C and 200 °C. Forward extrusion ratios were 2.25, 4.0, and 9.0, while backward extrusion ratios were 1.33, 2.16, 4.02, and 7.75. Effects of those parameters on the forming limit, deformation behaviors, extrusion load, and the mechanical properties of an extruded product were discussed in detail.
Highlights
Environmental pollution and global warming forced many countries in the world to set regulations to improve the life of human beings
The specimen used in this work was a AZ31B Mg alloy, where its chemical compositions
To enforce the uniform mechanical property of a specimen in experiments, the the homogenization treatment was performed by holding the AZ31B Mg alloy specimen at 400 ◦ C for homogenization treatment was performed by holding the AZ31B Mg alloy specimen at 400 °C for 10
Summary
Environmental pollution and global warming forced many countries in the world to set regulations to improve the life of human beings. Exhaust fumes by an automobile were cited as one of the reasons for environmental pollution and global warming. It is better to reduce the vehicles deadweight. When the weight of an automobile decreases by 10%, its fuel efficiency could increase by about 5 to 10%. There have been many attempts to replace the heavy steel parts of vehicles with new materials that are light weight and have high strength, such as Magnesium alloys [1,2,3,4,5]. Magnesium alloy has been studied as a new light material for automobile parts. Its extended applications are limited by its low formability at room temperature [6,7]. Its low formability is due to its hexagonal close packed crystal structure, which has less slip systems to yield applied external deformation
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
