The influence of hot rolling on oxide development within micro-cracks of aluminum–magnesium alloys

The paper provides the results of studying the technology for producing longish deformed semi-finished products by sheet rolling and direct rolling-extruding of aluminum-magnesium alloys with different scandium contents. Computer and physical modeling methods were used for the research and the results were verified by pilot tests. These alloys were selected for the research due to the fact that Al–Mg aluminum alloys doped with scandium have increased corrosion resistance along with their high strength. In this regard, this research was aimed to obtain longish deformed semi-finished products in the form of sheet metal, rods and welding wire from economically alloyed Al–Mg alloys. Computer simulation was performed using the DEFORM-3D software package to determine rational conditions of hot rolling of large-sized ingots and deformation modes of the combined processing using the method of direct rolling-extruding of rods made of the investigated alloys. At the same time, the technological and force parameters of these processes were justified with the laws of their change presented. Experimental results obtained made it possible to determine the limit values of force parameters and to study the structure and properties of deformed, annealed and welded semi-finished products made of the investigated alloys during the physical modeling of processes studied. In addition, metal properties were determined in a fairly wide range of changes in temperature, speed, and deformation parameters. Based on the results of experimental studies and modeling, recommendations were given for the industrial development of the technology for hot rolling of thick ingots from the investigated alloys. At the same time, technological solutions, regulations and conditions for deformed semi-finished products made of the investigated alloys were developed and batches of sheet metal with the required level of mechanical and corrosion properties were obtained.

Download Full-text

The development of near-surface microstructures during hot rolling of aluminum-magnesium alloys in relation to work roll topography

Surface and Interface Analysis ◽

10.1002/sia.5863 ◽

2015 ◽

Vol 48 (8) ◽

pp. 889-898 ◽

Cited By ~ 3

Author(s):

O. A. Gali ◽

M. Shafiei ◽

J. A. Hunter ◽

A. R. Riahi

Keyword(s):

Magnesium Alloys ◽

Hot Rolling ◽

Work Roll ◽

Near Surface ◽

Aluminum Magnesium Alloys ◽

Surface Microstructures

Download Full-text

Multifactor mathematical model of criticality of welding process of products from aluminum- magnesium alloys

10.36652/0042-4633-2020-3-12-18 ◽

2020 ◽

pp. 12-18

Author(s):

F.A. Urazbahtin ◽

A.YU. Urazbahtina

Keyword(s):

Mathematical Model ◽

Magnesium Alloy ◽

Magnesium Alloys ◽

Welding Process ◽

Welding Equipment ◽

Equipment Operation ◽

Aluminum Magnesium Alloys ◽

Aluminum Magnesium Alloy ◽

Welding Materials

A multifactor mathematical model of the welding process of products from aluminum-magnesium alloys, consisting of 71 indicators that assess the quality of the weld, the welding process, costs, equipment operation and quality of the welded material. The model can be used to control and optimize the welding process of products from aluminum-magnesium alloys. Keywords welding, products, aluminum-magnesium alloy, indicators, process parameters, welding equipment, welding materials, electrode sharpening, lining [email protected]

Download Full-text