Next Article in Journal
In Vitro Production of Calcified Bone Matrix onto Wool Keratin Scaffolds via Osteogenic Factors and Electromagnetic Stimulus
Previous Article in Journal
The Effect of a Taper Angle on Micro-Compression Testing of Mo-B-C Coatings
Open AccessArticle

Microstructure, Texture and Mechanical Properties of AZ31 Magnesium Alloy Fabricated by High Strain Rate Biaxial Forging

by 1,2, 1,2, 1,2, 1,2,*, 1,2,*, 1,2 and 1
1
Research Institute of Automobile Parts Technology, Hunan Institute of Technology, Hengyang 421002, China
2
School of Mechanical Engineering, Hunan Institute of Technology, Hengyang 421002, China
*
Authors to whom correspondence should be addressed.
Materials 2020, 13(14), 3050; https://doi.org/10.3390/ma13143050
Received: 9 June 2020 / Revised: 30 June 2020 / Accepted: 6 July 2020 / Published: 8 July 2020
High strain rate biaxial forging (HSRBF) was performed on AZ31 magnesium alloy to an accumulated strain of ΣΔε = 1.32, the related microstructure, texture and mechanical properties were investigated. It was found that the microstructure evolution can be divided into two steps during HSRBF. In the early forging processes, the refinement of the grain is obvious, the size of ~10 μm can be achieved; this can be attributed to the unique mechanisms including the formation of high density twins ({1012} extension twin and {1011}-{1012} secondary twin) and subsequently twining induced DRX (dynamic recrystallization). The thermal activated temperature increases with the increase of accumulated strain and results in the grain growth. Rolling texture is the main texture in the high strain rate biaxial forged (HSRBFed) alloys, the intensity of which decreases with the accumulated strain. Moreover, the basal pole rotates towards the direction of forging direction (FD) after each forging pass, and a basal texture with basal pole inclining at 15–20° from the rolling direction (RD) is formed in the full recrystallized HSRBFed alloys. The grain refinement and tiled texture are attributed to the excellent strength and ductility of HSRMBFed alloys with full recrystallized structure. As the accumulated strain is ΣΔε = 0.88, the HSRMBFed alloy displays an outstanding combination of mechanical properties, the ultimate tensile strength (UTS) is 331.2 MPa and the elongation is 25.1%. View Full-Text
Keywords: AZ31 alloy; high strain rate biaxial forging; twinning; twining induced dynamic recrystallization; texture; mechanical property AZ31 alloy; high strain rate biaxial forging; twinning; twining induced dynamic recrystallization; texture; mechanical property
Show Figures

Figure 1

MDPI and ACS Style

Wu, Y.; Liu, J.; Deng, B.; Ye, T.; Li, Q.; Zhou, X.; Zhang, H. Microstructure, Texture and Mechanical Properties of AZ31 Magnesium Alloy Fabricated by High Strain Rate Biaxial Forging. Materials 2020, 13, 3050.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop