Microstructures and Mechanical Properties of Al/Mg Alloy Multilayered Composites Produced by Accumulative Roll Bonding

2011 ◽  
Vol 27 (1) ◽  
pp. 15-21 ◽  
Author(s):  
H.S. Liu ◽  
B. Zhang ◽  
G.P. Zhang
Keyword(s):  
Mechanical Properties ◽  
Accumulative Roll Bonding ◽  
Mg Alloy ◽  
Roll Bonding ◽  
Multilayered Composites ◽  
Microstructures And Mechanical Properties

Structure and mechanical properties of Ni/Ti multilayered composites produced by accumulative roll-bonding process

2019 ◽  
Vol 54 (8) ◽  
pp. 1119-1126
Author(s):  
Mohammad Mokhles ◽  
Morteza Hosseini ◽  
Habib Danesh-Manesh ◽  
Seyed Mojtaba Zebarjad
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Accumulative Roll Bonding ◽  
Tensile Tests ◽  
Total Elongation ◽  
Uniaxial Tensile ◽  
Roll Bonding ◽  
Multilayered Composites ◽  
Scanning Electron

This research studies the structure and mechanical properties of Ni/Ti multilayered composites produced from commercial pure Ni and Ti foils by accumulative roll-bonding technique. To investigate these properties, scanning electron microscopy, Vickers microhardness, and uniaxial tensile tests were conducted at different processing cycles. Studies showed that in terms of structure, Ni and Ti layers maintain their continuity even up to 10 cycles of accumulative roll-bonding. Moreover, the energy-dispersive spectroscopy in scanning electron microscopy detected no deformation induced diffusion or reactive interfacial zones. It was found that by increasing the accumulative roll-bonding cycles, tensile and yield strengths as well as the hardness of the composite enhance and the total elongation reduces continuously.

Evaluation of mechanical properties and microstructure of Al/Al–12%Si multilayer via warm accumulative roll bonding process

2017 ◽  
pp. 002199831769214 ◽  
Author(s):  
N El Mahallawy ◽  
A Fathy ◽  
M Hassan ◽  
W Abdelaziem
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Accumulative Roll Bonding ◽  
Vickers Microhardness ◽  
Intermetallic Phase ◽  
Aluminum Matrix ◽  
Ductile Rupture ◽  
Roll Bonding ◽  
Metallurgical Bonding ◽  
Multilayered Composites

In this study, accumulative roll bonding (ARB) process was used to produce Al/Al–12%Si multilayered composites at 300℃. Microstructure and mechanical properties of the composites were studied during various ARB cycles by field emission scanning electron microscope (FE-SEM), tensile test, and the Vickers microhardness test. The FE-SEM results revealed that, as the ARB cycle increases the thickness of individual Al and Al–12%Si sheets decreased. After the 5th cycle, Al–12%Si layers were necked, fractured and dispersed in the aluminum matrix. A new intermetallic phase Al3.21Si0.47 was formed at the Al/Al–12%Si interface, indicating that the ARB process could result in a metallurgical bonding. It was observed that the tensile strength of composites improved by increasing the ARB passes, i.e. the tensile strength of the Al/Al–12%Si composite was measured to be about 5.52 and 2.17 times that of the primary 1050-Al and Al–12%Si sheets, respectively. Observations reveal that the failure mode in ARB-processed composites is of the shear ductile rupture type. The microhardness of the Al and Al–12%Si alloys were raised to 110 HV and 121 HV after five cycles.

Interface and Damping Capacity of Mg/Al Multilayered Composite Produced by Accumulative Roll Bonding

2016 ◽  
Vol 849 ◽  
pp. 838-843 ◽  
Author(s):  
Zhong Ming Liu ◽  
Hong Mei Chen ◽  
Wei Peng Guo ◽  
Jing Zhang ◽  
Yun Xue Jin
Keyword(s):  
Accumulative Roll Bonding ◽  
Room Temperature ◽  
Peak Height ◽  
Mg Alloy ◽  
Damping Capacity ◽  
Al Alloy ◽  
Roll Bonding ◽  
Multilayered Composite ◽  
Diffusion Layers ◽  
Multilayered Composites

Mg/Al alloy multilayered composites were produced by accumulative roll bonding (ARB) technique. The microstructures of Al and Mg alloy layers were characterized by scanning electron microscopy, and damping capacity of the composite was tested by dynamic mechanical analyzer.It can be found that the diffusion layers were produced in Al and Mg alloy layers, and the diffusion layers increased with increasing of the ARB pass. With the increasing of ARB pass, the room temperature damping value of Mg/A1 multilayered composite presented a downward trend. The temperature damping spectrum of the composite had two internal friction peaks, with the increasing of the ARB pass, the peak height of P1 peak increased gradually and P2 peak moved to low temperature gradually.

Manufacturing of Al–Al2O3–Mg multilayered nanocomposites by accumulative roll bonding process and study of its microstructure, tensile, and bending properties

2017 ◽  
Vol 52 (2) ◽  
pp. 147-157 ◽  
Author(s):  
M Abbasi ◽  
SA Sajjadi
Keyword(s):  
Mechanical Properties ◽  
Accumulative Roll Bonding ◽  
Composite Powder ◽  
Bending Strength ◽  
Bonding Process ◽  
Accumulative Roll Bonding Process ◽  
Composite Powders ◽  
Roll Bonding ◽  
Different Temperatures ◽  
Multilayered Composites

Accumulative roll bonding is used for producing multilayered composites, with exciting mechanical properties, via the creation of bonding between dissimilar metallic layers. In this study for the first time, Al–Mg multilayered composites reinforced with nano-Al2O3 particles were produced by the accumulative roll bonding process at different temperatures. However, there was a problem regarding the adhesion of the nanoceramic particles with each other and with the sheet metals. To avoid these disadvantageous effects of the Al2O3 particle addition and to create better adhesion at interfaces, Al and different percentages of Al2O3 powders were ball milled and Al/Al2O3 composite powders were produced. Afterward, the composite powder was added between Al and Mg sheets and they were rolled to 50% reduction in thickness in each cycle. The process was continued up to four cycles at different temperatures. The microstructural evaluation and mechanical properties of aluminum/nanoalumina/magnesium composites showed that 300℃ is suitable temperature for accumulative roll bonding of Al and Mg sheets with nano-Al2O3 particles. Accumulative roll bonded composites with Al/5 wt% Al2O3 composite powder showed higher tensile strength while the maximum bending strength was related to the composites containing Al/10 wt% Al2O3. Fracture surfaces of the nanocomposites revealed a brittle fracture at higher cycles.

Sign in / Sign up

Export Citation Format

Share Document