Finite Element Modeling of Bond Formation in Cold Roll Bonding Processes

2018 ◽  
Vol 767 ◽  
pp. 323-330 ◽  
Author(s):  
Kavan Khaledi ◽  
Stephan Wulfinghoff ◽  
Stefanie Reese
Keyword(s):  
Plastic Deformation ◽  
Finite Element ◽  
Bond Strength ◽  
Bond Formation ◽  
Element Model ◽  
Roll Bonding ◽  
Peeling Test ◽  
Cold Roll ◽  
Cold Roll Bonding ◽  
Welding Processes

The paper aims to present a finite element model for the bond strength evolution in cold roll bonding processes. To accomplish this, first, the micro-mechanisms taking place along the cold welded joint interfaces are explained. Then, based on the microscopic description of cold welding processes, a bonding interface model is employed to describe the bond formation between the rolled metallic layers. The obtained bond strength is calculated based on the governing parameters of the bonding such as the degree of plastic deformation and the surface cleanness. The numerical simulation given in this paper includes the modelling of joining during cold roll bonding followed by the debonding process in Double Cantilever Beam (DCB) peeling test. Finally, the effects of two important factors on the bond formation, i.e. (1) the degree of plastic deformation and (2) the surface cleanness, are numerically investigated.

Effect of Pre-Rolling Heat Treatments on the Bond Strength of Cladded Galvanized Steels in a Cold Roll Bonding Process

2016 ◽  
Vol 87 (12) ◽  
pp. 1619-1626 ◽  
Author(s):  
Illia Hordych ◽  
Dmytro Rodman ◽  
Florian Nürnberger ◽  
Christian Hoppe ◽  
Hans Christian Schmidt ◽  
...  
Keyword(s):  
Bond Strength ◽  
Heat Treatments ◽  
Bonding Process ◽  
Roll Bonding ◽  
Galvanized Steels ◽  
Cold Roll ◽  
Cold Roll Bonding ◽  
Rolling Heat

Bond Strength in Cold Roll Bonding

CIRP Annals ◽  
1985 ◽  
Vol 34 (1) ◽  
pp. 221-224 ◽  
Author(s):  
N. Bay ◽  
C. Clemensen ◽  
O. Juelstorp ◽  
T. Wanheim
Keyword(s):  
Bond Strength ◽  
Roll Bonding ◽  
Cold Roll ◽  
Cold Roll Bonding

Manufacturing of three-layered sandwich composite of AA1050/LZ91/AA1050 using cold roll bonding process

2021 ◽  
pp. 095440542199566
Author(s):  
D. Rahmatabadi ◽  
M. Pahlavani ◽  
J. Marzbanrad ◽  
R. Hashemi ◽  
A. Bayati
Keyword(s):  
Tensile Strength ◽  
Cold Work ◽  
Bonding Process ◽  
Thickness Reduction ◽  
Sandwich Composite ◽  
Roll Bonding ◽  
Peeling Test ◽  
Cold Roll ◽  
Cold Roll Bonding ◽  
Metal Extrusion

In this paper, for the first time, dual-phase Mg-Li alloy is used to produce a three-layered Al/Mg/Al composite with the use of the cold roll bonding process. The low density and high ductility are known as the essential advantages of the Mg-Li alloys, while a couple of important problems should be taken into account, namely low corrosion resistance and low strength. It has been tried to deal with the mentioned problems by performing cold work and cover the Mg sheet with the Al similar plates. To investigate the Mg-Al layers bonding quality, mechanical properties and microstructure were examined for different thicknesses reduction ratio. The peeling test results showed that with increasing rolling pressure, the size and number of cracks on the brittle surfaces due to brushing, surface expansion, and metal extrusion between the cracks were improved by rising the reduction thickness ratio, bond strength enhanced, sharply. The UTS of 33.33% thickness reduction three-layered Al/Mg sample was obtained 186.5 MPa, which was more than 2.1 and 1.3 times higher than the initial Al1050 and MgLZ91 samples, respectively. However, because of increasing the amount of thickness reduction, roll-bonded layers’ quality, the tensile strength of the composite, and the microhardness of both layers increased. Furthermore, the elongation has reduced, and the maximum ultimate tensile strength and microhardness were achieved at 66.67% thickness reduction.

Fabrication of glass/carbon fiber-reinforced Al-based composites through deformation bonding

2019 ◽  
Vol 53 (18) ◽  
pp. 2531-2543 ◽  
Author(s):  
M Reihanian ◽  
M Dashtbozorg ◽  
SM Lari Baghal
Keyword(s):  
Accumulative Roll Bonding ◽  
Wear Behavior ◽  
Short Fiber ◽  
Matrix Composites ◽  
Fiber Reinforced ◽  
Roll Bonding ◽  
Peeling Test ◽  
Cold Roll ◽  
Cold Roll Bonding ◽  
Glass Carbon

The goal of the present study is to fabricate the short fiber-reinforced metal matrix composites by accumulative roll bonding. Various mixtures of fibers including 100 glass, 95 glass/5 carbon and 80 glass/20 carbon (all in wt.%) were used as the reinforcement. In order to investigate the bonding quality at layer interface, the composites with various fiber mixtures were produced by cold roll bonding. The bonding strength of the composites under different processing conditions including the fiber mixture, reduction in thickness and post-rolling annealing was measured by the peeling test. The 95 glass/5 carbon mixture was used to fabricate the fiber-reinforced composite through accumulative roll bonding. The fiber distribution, tensile properties and wear behavior of the composite were investigated at various numbers of accumulative roll bonding cycle. It was found that during accumulative roll bonding, the fiber clusters were broken and fragmented into smaller pieces. Results showed that the tensile strength and wear resistance of the composite enhanced with increasing the number of accumulative roll bonding cycles.

scholarly journals Effect of wire brushing on cold roll bonding of Al 1050 sheets

2015 ◽  
Vol 18 (2) ◽  
pp. 3-4
Author(s):  
W abdelaziem ◽  
N Elmahalawy ◽  
M Hassan ◽  
A Fathy
Keyword(s):  
Roll Bonding ◽  
Cold Roll ◽  
Cold Roll Bonding ◽  
Wire Brushing
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