The Effect of Process Parameters on the Microstructure of Semi-solid Slurry of AZ91 Magnesium Alloy Produced Through Inert Gas Bubbling

Author(s):  
S. G. Shabestari ◽  
Y. Najafi
Author(s):  
A. Muniappan ◽  
Mantri Sriram ◽  
C. Thiagarajan ◽  
G. Bharathi Raja ◽  
T. Shaafi

2017 ◽  
Vol 65 (6) ◽  
pp. 917-926 ◽  
Author(s):  
J. Iwaszko ◽  
M. Strzelecka ◽  
K. Kudła

AbstractIn this study, surface remelting treatment of the AZ91 magnesium alloy by means of welding using a non-consumable electrode in an inert gas shield was carried out. Three variants of surface treatment were used, i.e. the single torch variant with a single heat source without cooling down the samples, the single torch variant with a single heat source and a cooling system with liquid nitrogen, and the double welding torch variant with a double heat source in the torches operating in a tandem configuration. Experimental verification of the applied apparatus solutions was based on both macro- and microstructural assessment of the obtained effects. Comparative analysis of the variants used and the obtained microstructural results allowed the authors to indicate the deficiencies and limitations of particular solutions and to single out the best solution that would be useful for modifying the surface layers of magnesium alloys, as well as other materials having a strong oxygen affinity.


2003 ◽  
Vol 426-432 ◽  
pp. 539-544
Author(s):  
Shui Sheng Xie ◽  
Xiaoshu Zeng ◽  
Yun Xi Jiang ◽  
Guo Xiang Chen ◽  
Jian Shen

2019 ◽  
Vol 61 (3) ◽  
pp. 260-266 ◽  
Author(s):  
Ugur Koklu ◽  
Sezer Morkavuk ◽  
Levent Urtekin

1996 ◽  
Vol 35 (4) ◽  
pp. 529-534 ◽  
Author(s):  
Kun Wu ◽  
Mingyi Zheng ◽  
Min Zhao ◽  
Congkai Yao ◽  
Jihong Li

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4010
Author(s):  
Grzegorz Banaszek ◽  
Teresa Bajor ◽  
Anna Kawałek ◽  
Tomasz Garstka

This paper presents the results of numerical tests of the process of forging magnesium alloy ingots (AZ91) on a hydraulic press with the use of flat and proprietary shaped anvils. The analysis of the hydrostatic pressure distribution and the deformation intensity was carried out. It is one of the elements used for determining the assumptions for the technology of forging to obtain a semi-finished product from the AZ91 alloy with good strength properties. The aim of the research was to reduce the number of forging passes, which will shorten the operation time and reduce the product manufacturing costs. Numerical tests of the AZ91 magnesium alloy were carried out using commercial Forge®NxT software.


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