Effective parameters on bonding strength of roll bonded Al/St/Al multilayer strips

Manesh, H. Danesh; Shahabi, H. Sh.

doi:10.1016/j.jallcom.2008.08.081

Cited by 68 publications

(29 citation statements)

References 27 publications

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“…Moreover, a good cold formability of the twin-roll cast and consequently hot rolled clad strip of pure aluminium and austenitic steel is shown in 8 . The results of the research on the roll bonding of two-layer (Al -Al) and a three-layer (Al -steel -Al) compositions are described in 9 . It is shown that the strain rate during rolling has no significant impact on the composite's mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Roll Bonding of Steel Net-Reinforced Aluminium Strips

et al. 2018

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The present study is dedicated to the experimental determination of strain parameters at rolling of aluminium matrix with inserted wire netting. Two types of stainless steel fabric netting with different orientation to the rolling axis were placed between two aluminium strips and hot rolled. The rolling temperature and reduction were varied to achieve the sound bonding between the matrix layers and steel net. During the study, the following main investigations were made: strain on areas of longitudinal and transverse cross sections of the composite was measured; stretching and ovalization of net wiring and changes in the net cell angles were determined; mechanical properties of composites along the rolling direction were tested. The experiments were summarized by following contradiction: the contact pressure, required for the bonding of aluminium layers, produces extreme tensile strain on the inserted wires, reducing the mechanical properties of the reinforcing net and, consequently, reducing the properties of the entire composite. Strips with diagonally oriented reinforcing net showed the best results in the longitudinal tension tests.

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Section: Introductionmentioning

confidence: 99%

Roll Bonding of Steel Net-Reinforced Aluminium Strips

et al. 2018

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“…Various studies [53,54], reported that steel linishing is essential to establish an effective cold weld during CRB because it removes contaminants and surface oxides that could interfere with the creation of nascent metal. Furthermore it has been reported that localised shear deformation to break unavoidable surface oxide films is promoted by a larger amount of surface asperities, which are created by steel surface linishing [55].…”

Section: Methodsmentioning

confidence: 99%

A feasibility study on different NDT techniques used for testing bond quality in cold roll bonded Al-Sn alloy/steel bimetal strips

2017

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-This paper presents non-destructive testing (NDT) results for the detection of bond defects in aluminiumtin (Al-Sn) alloy/steel bimetal strips. Among all types of bimetal strip that are used in the automotive industry for plain journal engine bearings, Al-Sn alloys cold roll bonded (CRB) onto steel backing is the most common type. The difficulty to evaluate the metallurgical bond between the two dissimilar metals is a major industrial concern, which comprises the risk that bearings fail in the field. Considering the harsh performance requirements, 100% online non-destructive testing would be desirable to significantly reduce the business risk. Nowadays bimetal strip manufacturers still rely on destructive testing through different peel-off tests. This work offers the results from four independent NDT studies, using active thermography, shearography, ultrasound and guided wave electromagnetic acoustic transducers (EMATs) and samples with different artificially implanted defects, to explore the feasibility to qualitatively indicate the occurrence of bond defects. A destructive peel off test was used to correlate the NDT results with known bond quality. The studies were done under laboratory conditions, and in case of ultrasound also online under production conditions. During the ultrasound online test, the requirements that a NDT technique has to fulfil for online inspection of Al-Sn alloy/steel bimetal strip were established. For active thermography, shearography and guided wave EMAT techniques, it was theoretically analysed, if the laboratory test results could be transferred to testing under production conditions. As a result, guided waves using EMATs, among the four tested methods, are best suited for online inspection of Al-Sn alloy/steel bimetal strip. This research was carried out in collaboration with MAHLE Engine Systems UK Ltd., an Al-Sn alloy/steel bimetal strip manufacturer for the automotive industry.

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“…In addition, formability of brittle metals can be enhanced by bonding with ductile metals [23]. Thus, multilayer metal composite sheets have been widely applied in many industrial fields, such as electrical industry, automotive, aerospace, and medical instruments [24].…”

Section: Introductionmentioning

confidence: 99%

Feature Size Effect on Formability of Multilayer Metal Composite Sheets under Microscale Laser Flexible Forming

Liu

Zhang

Gau

et al. 2017

Metals

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Abstract:Multilayer metal composite sheets possess superior properties to monolithic metal sheets, and formability is different from monolithic metal sheets. In this research, the feature size effect on formability of multilayer metal composite sheets under microscale laser flexible forming was studied by experiment. Two-layer copper/nickel composite sheets were selected as experimental materials. Five types of micro molds with different diameters were utilized. The formability of materials was evaluated by forming depth, thickness thinning, surface quality, and micro-hardness distribution. The research results showed that the formability of two-layer copper/nickel composite sheets was strongly influenced by feature size. With feature size increasing, the effect of layer stacking sequence on forming depth, thickness thinning ratio, and surface roughness became increasingly larger. However, the normalized forming depth, thickness thinning ratio, surface roughness, and micro-hardness of the formed components under the same layer stacking sequence first increased and then decreased with increasing feature size. The deformation behavior of copper/nickel composite sheets was determined by the external layer. The deformation extent was larger when the copper layer was set as the external layer.

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Effective parameters on bonding strength of roll bonded Al/St/Al multilayer strips

Cited by 68 publications

References 27 publications

Roll Bonding of Steel Net-Reinforced Aluminium Strips

Roll Bonding of Steel Net-Reinforced Aluminium Strips

A feasibility study on different NDT techniques used for testing bond quality in cold roll bonded Al-Sn alloy/steel bimetal strips

Feature Size Effect on Formability of Multilayer Metal Composite Sheets under Microscale Laser Flexible Forming

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