Microstructure Evolution During Isothermal Forging of 7A85 Aluminum Aviation Component

2021 ◽  
pp. 1813-1825
Author(s):  
Jian-Liang Hu ◽  
You-Ping Yi ◽  
Miao Jin ◽  
Hong Bo
Keyword(s):  
Microstructure Evolution ◽  
Isothermal Forging

Microstructure Evolution of Mg-10Gd-2Y-0.5Zn-0.3Zr Alloy during Isothermal Forging Process

2014 ◽  
Vol 783-786 ◽  
pp. 485-490
Author(s):  
De Bin Shan ◽  
X.Z. Han ◽  
Wen Chen Xu
Keyword(s):  
Microstructure Evolution ◽  
Ageing Time ◽  
High Strength ◽  
Aged Alloy ◽  
Secondary Phases ◽  
Obvious Effect ◽  
Isothermal Forging ◽  
Forging Process ◽  
The Matrix ◽  
Peak Aged

The isothermal forging process of a bracket and its microstructure evolution of Mg-10Gd-2Y-0.5Zn-0.3Zr alloy have been investigated in the present study. The results show that the bracket with thin-web and high-rib is well formed through modifying corners and adding an active damping block into male die. Amounts of lamellae and particles distribute uniformly on the matrix after the isothermal forging process and ageing process. The isothermal forging process has an obvious effect on the precipitation behaviour of secondary phases, while it did not change the grain size greatly. With the increase of ageing time, more secondary phases precipitate from α-Mg matrix until 60h. The optimal ultimate tensile strength and elongation of the peak-aged alloy are 382MPa and 4.03%, respectively. The combined effects of LPO and β′ phases contribute to the high strength of the peak-aged alloy.

scholarly journals Microstructure evolution in MA14 magnesium alloy under multi-step isothermal forging

2011 ◽  
Vol 1 (4) ◽  
pp. 213-216 ◽  
Author(s):  
D. R. Nugmanov ◽  
O. Sh. Sitdikov ◽  
M. V. Markushev
Keyword(s):  
Magnesium Alloy ◽  
Microstructure Evolution ◽  
Isothermal Forging

Effects of Die Temperature on Microstructure Evolution of 7A85 Aluminum Forging

2014 ◽  
Vol 633-634 ◽  
pp. 628-633
Author(s):  
Jian Liang Hu ◽  
You Ping Yi ◽  
Shi Quan Huang
Keyword(s):  
Uniform Distribution ◽  
Microstructure Evolution ◽  
Isothermal Forging ◽  
Forging Process ◽  
Medium Scale ◽  
Aluminum Forging ◽  
Die Temperature ◽  
Precipitated Phases ◽  
High Degree ◽  
Distribution Of Dislocations

The free forging process of medium scale specimen was carried out to study the effects of the die temperature on the microstructure evolution of 7A85 aluminum forging. The results show that with the increase of die temperature, the size of the grains and the distribution of dislocations and precipitates of free forging tend to have a high degree of uniformity. Considering the effects of die temperature, the isothermal forging process was applied for the deformation of complex aviation forging. The metal flows smoothly during the isothermal forging process and thus there is little possibility of forming unfill, crack and other defects. The dislocations are evenly distributed during the isothermal forging process. Consequently, there is a relatively uniform distribution of precipitated phases of the aviation forging.

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