Effect of Magnetostatic Field on Microstructure of 7075 Aluminum Alloy Strip Manufactured by Twin-Roll Casting

2013 ◽  
Vol 652-654 ◽  
pp. 2427-2431 ◽  
Author(s):  
Xin Su ◽  
G M Xu ◽  
Y H Feng
Keyword(s):  
Electromagnetic Field ◽  
Aluminum Alloy ◽  
Central Zone ◽  
Alloy Strip ◽  
7075 Aluminum Alloy ◽  
Magnetostatic Field ◽  
Dendritic Crystal ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll

In this paper, the effect of magnetostatic field on the microstructure and microsegregation of 7075 aluminum alloy strip by twin-roll casting is researched , and the result shows that when no electromagnetic field is applied during the process of roll-casting , the microstructure of 7075 strip is most composed of coarse columnar and dendritic crystal , the direction of grains is equal to roll-casting direction. When the magnetostatic field with 0.13T intensity is applied during the twin-roll casting, the microstructural of strip becomes uniform ,refined and equiaxed at the central zone of strip, and the dendritic crystal at the surficial is disordered and refined significantly.

Twin Roll Casting of Aluminium Alloy ADC12, A3003, A7075

2017 ◽  
Vol 735 ◽  
pp. 18-23
Author(s):  
Yuta Kashitani ◽  
Shinichi Nishida ◽  
Junshi Ichikawa ◽  
Hiroto Ohashi ◽  
Naoshi Ozawa ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Aluminum Alloy ◽  
Casting Process ◽  
Rolling Process ◽  
Alloy Strip ◽  
High Tensile Strength ◽  
Experimental Conditions ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll

This paper describes a vertical type twin roll strip casting process for producing aluminum alloy strip of ADC12, A3003 and A7075. Twin roll casting process is able to produce a strip from molten metal directly. Thus this process has a possibility to reduce total cost of sheet making comparing to conventional rolling process. Aluminum alloy ADC12 is a casting material that is used for die casting. A3003 is known as a wrought aluminum alloy for aluminum can body sheet. The A3003 sheet is generally produced by rolling, so it is effective for reducing a process cost to produce the strip by twin roll casting process. Aluminum alloy A7075 has high tensile strength, and it is known as a material for aerospace application. The sheet is manufactured in small quantities comparing to the other sheet aluminum alloy. It is supposed that the demand of high tensile strength aluminum sheet such as A7075 is going to increase for weight saving of structural material. In this study, twin roll casting experiment was performed to produce these three aluminum alloy strip in same experimental conditions. Castability, surface conditions and strip thickness were estimated. It was possible to cast these aluminum alloy strip.

Microstructures and Properties of Twin-Roll Casting 7050 Aluminum Alloy Strip

2013 ◽  
Vol 652-654 ◽  
pp. 2397-2403 ◽  
Author(s):  
Chun Fu Li ◽  
Hong Bin Wang ◽  
Fan Lei Meng ◽  
Hong Yang Zhao
Keyword(s):  
Electron Microscopy ◽  
Aluminum Alloy ◽  
Solution Treatment ◽  
Second Phase ◽  
Alloy Strip ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
7050 Aluminum Alloy ◽  
Second Phase Particles ◽  
Twin Roll

In this study, 7050 aluminum alloy strip was produced using the twin-roll casting technique. Microstructures and properties of the cast-rolling 7050 aluminum alloy were investigated by means of optical microscope (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Vickers hardness test. The results indicate that microstructures of cast-rolling 7050 alloy strip are inhomogeneous on the cross section. From the edge to the center, the size of grain decreases gradually and becomes more homogeneous, showing a transition from dendrite grains to equiaxed grains. There are undissolved second phase particles in grains and at grain boundaries. And the dendrite grains and second phase particles can be reduced by solution treatment, and the hardness of the cast-rolling strip can be improved by aging treatment.

Inline Rolling of 5182 Aluminum Alloy Strip Cast by a Vertical Type High Speed Twin Roll Caster

2010 ◽  
Vol 139-141 ◽  
pp. 477-480
Author(s):  
Ryoji Nakamura ◽  
Shuya Hanada ◽  
Shinji Kumai ◽  
Hisaki Watari
Keyword(s):  
Aluminum Alloy ◽  
High Speed ◽  
Rolling Speed ◽  
Center Line ◽  
Alloy Strip ◽  
Ripple Mark ◽  
Roll Casting ◽  
Strip Cast ◽  
Twin Roll Caster ◽  
Twin Roll

An inline hot rolling was operated on 5182 aluminum alloy strip cast using a vertical type high speed caster (VHSTRC) at the speed of 60 m/min. A porosity existing at center line of the thickness and a ripple mark on the surface, these are typical defects of the strip cast by the VHSTRC, could be improved by the inline rolling. The rolling speed was as same as the roll-casting-speed of 60m/min. The temperature of the strip, when the inline rolling was operated, was 450oC. The reduction of the strip of the inline rolling was 35%.

scholarly journals A Novel Approach to Improve the Microstructure and Mechanical Properties of Al–Mg–Si Aluminum Alloys during Twin-Roll Casting

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1713 ◽  
Author(s):  
Yong Li ◽  
Chen He ◽  
Jiadong Li ◽  
Zhaodong Wang ◽  
Di Wu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Crystallization Front ◽  
Alloying Elements ◽  
Cast Slab ◽  
Energy Dispersion Spectroscopy ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll Cast ◽  
Twin Roll

The main purpose of this present study was to investigate the different processing conditions on the microstructure, segregation behavior of alloying elements, and mechanical properties of Al−Mg−Si alloy twin-roll cast slab prepared using a novel twin-roll casting technology. The simulation of temperature field, distribution of alloying elements, tensile properties, hardness, and conductivity were examined by a Leica optical microscope, scanning electron microscopy, energy dispersion spectroscopy, electron probe microanalysis, and tensile tests. The results indicated that when the traditional twin-roll casting method was used to produce aluminum alloy strip, there are obvious centerline segregation defects due to the deep crystallization front depth and symmetrical solidification characteristics. When the forced-cooling technology was applied in the twin-roll casting process, by virtue of the changing of crystallization front depth and crystallization front shape, the segregation defects are obviously suppressed. Suggesting that this method can significantly improve the uniformity of alloying elements in the thickness direction of the twin-roll cast slab, ultimately improve the mechanical properties of AA6022 aluminum alloy.

Twin roll casting of aluminum alloy AC7B

2019 ◽  
Vol 2019.27 (0) ◽  
pp. 413
Author(s):  
Makoto HAGIWARA ◽  
Yuto HORIGOME ◽  
Shogo IMAI ◽  
Shinichi NISHIDA
Keyword(s):  
Aluminum Alloy ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll

704 Twin Roll Casting of Aluminum Alloy with Wide Freezing Zone

2013 ◽  
Vol 2013.88 (0) ◽  
pp. _7-4_
Author(s):  
Keisuke KAMAKURA ◽  
Yuki MIMA ◽  
Toshio HAGA
Keyword(s):  
Aluminum Alloy ◽  
Twin Roll Casting ◽  
Roll Casting ◽  
Twin Roll
Sign in / Sign up

Export Citation Format

Share Document