The effect of surface preparation on the bond strength of Al-St strips in CRB process

Gao, Chuang; Li, Long; Chen, Xin; Zhou, Dejing; Tang, Chaolan

doi:10.1016/j.matdes.2016.05.112

Cited by 39 publications

(32 citation statements)

References 36 publications

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“…Moreover, pronounced tongue-shaped risings have been found after two-step brushing process, which can be clearly seen in Figures 5c and 6c. This morphology of the created steel brush layer is comparable to that shown by Reference [14] and [20]. Thus, besides cooped areas [20], raised long tongue-shaped islands appear.…”

Section: Microstructural Characterizationsupporting

confidence: 86%

“…They demonstrate an appearance of smooth areas within the grooves namely indicating a brittle fracture surface [62]. Due to this brittle fracture surface, it can be concluded that besides the formation of a work-hardened brush layer [18,27], brushing ripped material out of the steel surface, such as reported in References [20,27,63], therefore, abrasive wear has occurred. Thus both the scratches and brittle fracture surfaces are signatures for abrasive wear [63,64].…”

Section: Microstructural Characterizationmentioning

confidence: 72%

“…Majority of literature about roll bonding of metals is focused on the production of laminated non-ferrous materials such as aluminum [13][14][15][16][17][18] and copper [17] or laminated non-ferrous and ferrous composites, e.g., steel and aluminum [19][20][21][22][23][24][25][26][27][28][29][30][31]. Only few papers are concerned with steel laminated composites.…”

Section: Introductionmentioning

confidence: 99%

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Laminated TRIP/TWIP Steel Composites Produced by Roll Bonding

Qiu

Kaden

Schmidtchen

et al. 2019

Metals

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In order to investigate the roll bonding of high-alloy transformation induced plasticity (TRIP) and twinning induced plasticity (TWIP) steel, roll-bonded sheets of the TRIP and TWIP steel were manufactured starting from hot rolling, followed by brushing and cold rolling. Both, the microstructure and mechanical properties of the roll-bonded sheets were characterized by metallographic investigations, and tensile and T-peel tests. Preliminary results, such as an occurrence of an adhesive bonding between two TWIP steel sheets and between TRIP and TWIP steel sheet after a thickness reduction of approximately 50% were obtained. Moreover, the formation of deformation-induced martensite leads to outstanding mechanical properties of the roll-bonded composite sheet. An ultra-fine grained microstructure was observed in the bonding zone after only one roll-bonding process. The obtained promising results demonstrate the possibility of the development of an accumulative roll-bonding process for TRIP/TWIP steel composites.

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Section: Microstructural Characterizationsupporting

confidence: 86%

Section: Microstructural Characterizationmentioning

confidence: 72%

Section: Introductionmentioning

confidence: 99%

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Laminated TRIP/TWIP Steel Composites Produced by Roll Bonding

Qiu

Kaden

Schmidtchen

et al. 2019

Metals

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“…Layer thickness, surface condition and pre-and postannealing also affect the bond quality. Optimal bonding can be achieved with higher reduction rate and friction coefficient [24,25], lower rotation speed [26], clean and brushed intimate surfaces [27,28]. Pre-annealing generally diminishes the work-hardening effect and increases the formability allowing a better bond strength.…”

Section: Introductionmentioning

confidence: 99%

Compromise between magnetic shielding and mechanical strength of thin Al/Steel/Al sandwiches produced by cold roll bonding: Experimental and numerical approaches

Clérico

Mininger

Prevond

et al. 2019

Journal of Alloys and Compounds

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Electromagnetic pollution become an issue these last years with growth of electrical and electronic industry. The shielding of electromagnetic fields is one solution to reduce effects of this pollution. This study proposes an Al/Steel/Al sandwich produced by cold roll bonding to shield low frequency magnetic wave in near field. The structure evolution of sandwich composite has been characterized in function of the reduction rate of thickness. The bonding quality of Al/Steel interfaces has been then quantified by Tensile Bond Strength Test. Finally, the magnetic shielding effectiveness of the composite and the initial Al and steel sheets have been evaluated experimentally and numerically. During cold roll bonding, plastic instability has been observed and causes steel necking and fragmentation. A numerical model has been developed to explain its origin. A good bond quality is attained when debonding of Al/Steel interfaces requires the deterioration of the composite. The composite takes both shielding behavior of steel and Al and can shield low frequency. However, steel fragmentation has a negative impact on shielding effectiveness. The optimal condition between shielding and mechanical properties is then obtained for a reduction rate of 62 % where only few fragmentations are observed.

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“…Increasing the brittleness facilitated the fracture of the oxides on the surface layer during the rolling‐bonding process and thus was beneficial for the extrusion of virgin metal through the cracks and bonding with the opposite surface . However, some investigations showed that the degree of surface hardening must be controlled because over‐hardening surface may hinder the bond forming …”

Section: Introductionmentioning

confidence: 99%

Effect of Wavy Profile on the Fabrication and Mechanical Properties of Al/Ti/Al Composites Prepared by Rolling Bonding: Experiments and Finite Element Simulations

Chen

et al. 2019

Adv Eng Mater

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The bonding interface plays an important role in the mechanical properties of laminated metal composites (LMCs). Compared with a straight interface, larger bonding area is achieved by a wavy interface, which provides higher debonding resistance for a given bonding strength. Herein, Al/Ti/Al LMCs with straight and wavy bonding interfaces are fabricated using Ti strips with initial straight and wavy profiles. The mechanical properties are investigated with in-plane uniaxial tension tests. Microstructures in the region of the interface before and after tension are characterized by scanning electron microscopy and electron backscatter diffraction. Finite element simulations of the rolling-bonding process and tension are conducted to investigate the effect of the wavy profile on the fabrication and mechanical properties of Al/Ti/Al LMCs. Compared with an initial straight profile, Al and wavy Ti strips are successfully bonded at a lower rolling reduction because of the larger local strain and higher local contact stress. Wavy interfaces between the Al and Ti layers are formed. Similar strength and ductility are obtained for Al/Ti/Al LMCs with straight and wavy interfaces when a proper rolling reduction and annealing are applied.

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The effect of surface preparation on the bond strength of Al-St strips in CRB process

Cited by 39 publications

References 36 publications

Laminated TRIP/TWIP Steel Composites Produced by Roll Bonding

Laminated TRIP/TWIP Steel Composites Produced by Roll Bonding

Compromise between magnetic shielding and mechanical strength of thin Al/Steel/Al sandwiches produced by cold roll bonding: Experimental and numerical approaches

Effect of Wavy Profile on the Fabrication and Mechanical Properties of Al/Ti/Al Composites Prepared by Rolling Bonding: Experiments and Finite Element Simulations

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