scholarly journals Effects of Pre-Strain on the Evolution of Microstructure and Strain Hardening of Extruded Az31 Magnesium Alloy

2017 ◽  
Vol 20 (4) ◽  
pp. 1003-1009
Author(s):  
Lifei Wang ◽  
Miao Cao ◽  
Shuming Yang ◽  
Hua Zhang ◽  
Dongya Wang ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Strain Hardening ◽  
Az31 Magnesium Alloy ◽  
Evolution Of Microstructure

Influence of Annealing Temperature on Microstructure and Properties of Warm-Rolled AZ31 Magnesium Alloy Sheets

2013 ◽  
Vol 747-748 ◽  
pp. 352-358
Author(s):  
Hua Zhang ◽  
Guang Sheng Huang ◽  
Jin Han Lin ◽  
Li Fei Wang
Keyword(s):  
Magnesium Alloy ◽  
Strain Hardening ◽  
Annealing Temperature ◽  
Az31 Alloy ◽  
Az31 Magnesium Alloy ◽  
Strain Hardening Exponent ◽  
N Value ◽  
Microstructure And Properties ◽  
Different Temperatures ◽  
R Value

Warm-rolled AZ31 alloy sheets were annealed at different temperatures ranging from 150 to 450°C. Effects of annealing temperature on microstructure and properties of warm-rolled AZ31 alloy sheets, especially the formability, were investigated. The results revealed that the Lankford value (r-value) and strain-hardening exponent (n-value) first increased and then became relatively steady with the increase of annealing temperature. The Erichsen value (IE) first increased and then decreased with the increase of annealing temperature and the AZ31 alloy sheets exhibited the highest IE of 3.02 mm when annealing at 250°C, which can be mainly attributed to a larger elongation, a lower r-value and a higher n-value.

Effects of Texture on Tensile Property of Extruded AZ31 Magnesium Alloy Investigated by Acoustic Emission

2013 ◽  
Vol 747-748 ◽  
pp. 340-345
Author(s):  
Chuan Kai Sun ◽  
Hong Yun Luo ◽  
Zhi Yuan Han
Keyword(s):  
Acoustic Emission ◽  
Flow Stress ◽  
Magnesium Alloy ◽  
Yield Strength ◽  
Strain Hardening ◽  
Tensile Property ◽  
Stress Relief ◽  
Deformation Twinning ◽  
Az31 Magnesium Alloy ◽  
Deformation Twins

In this paper, effects of texture on tensile property of extruded AZ31 magnesium alloy are investigated by acoustic emission (AE). The results show that the extruded AZ31 magnesium alloy used in this research has the strong texture of and tensile anisotropy. The yield strength of TD-sample is about 80MPa, which is half of that of ED-sample. AE results show that the AE count of the TD-sample is higher than that of the ED-sample. These AE results suggest that there are more deformation twins in the TD-sample than in the ED-sample. It can be concluded that the deformation twinning can strongly influence the anisotropy, which is mainly due to the flow stress relief induced by twinning and the interaction of twins and dislocations during the strain hardening.

Orientational Analysis on Static Recrystallization at Tension Twins in AZ31 Magnesium Alloy

2011 ◽  
Vol 299-300 ◽  
pp. 778-784
Author(s):  
Xiao Li ◽  
Ping Yang ◽  
Li Meng
Keyword(s):  
Magnesium Alloy ◽  
Static Recrystallization ◽  
Volume Fraction ◽  
Early Stage ◽  
Nucleation Site ◽  
Az31 Magnesium Alloy ◽  
Basal Texture ◽  
Promotive Effect ◽  
Ebsd Technique ◽  
Evolution Of Microstructure

The deformation depends on twinning in Mg alloy, and twins will be the dominant recrystallization nucleation site. Tension twinning proceeds much more easily than compression twinning since its volume fraction is much higher than that of compression twins, which may have a promotive effect on the recrystallization to a certain degree. Based on the previous research on the static recrystallization at compression twins, the evolution of microstructure and texture in AZ31 magnesium alloy during its static recystallization at tension twins was further investigated; and the orientational characteristics of new grains formed at tension twins in the early stage of static recrystallization were analyzed by EBSD technique. The results showed that the strong basal texture was retained and weakened with no new texture component being detected during annealing. New grains were observed to nucleate preferentially at the intersections of tension twin variants or the intersection between tension twins and compression twins. Their orientations are relatively random and are strongly scattered from those of original tension twins or compression twins. A comparison of the recrystallization at tension twins and compression twins was further made.

EFFECT OF SAMPLE ORIENTATION ON STATIC RECRYSTALLIZATION OF AZ31 MAGNESIUM ALLOY

2012 ◽  
Vol 48 (8) ◽  
pp. 915 ◽  
Author(s):  
Hongtao HUANG ◽  
Andrew Godfrey ◽  
Wei LIU ◽  
Ruihe TANG ◽  
Qing LIU
Keyword(s):  
Magnesium Alloy ◽  
Static Recrystallization ◽  
Az31 Magnesium Alloy ◽  
Sample Orientation

scholarly journals Revealing joining mechanism in refill friction stir spot welding of AZ31 magnesium alloy to galvanized DP600 steel

2021 ◽  
pp. 109997
Author(s):  
Banglong Fu ◽  
Junjun Shen ◽  
Uceu F.H.R. Suhuddin ◽  
Ayrton A.C. Pereira ◽  
Emad Maawad ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Spot Welding ◽  
Friction Stir Spot Welding ◽  
Az31 Magnesium Alloy ◽  
Friction Stir
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