Evaluation of the quality of laminated metallic materials on the basis of high-frequency endurance and damping capacity

Bryzgalin, G. I.; Tsvetkov, D. I.; Kartashov, G. G.; Nagibin, V. P.; Pisarev, A. V.

doi:10.1007/bf01533405

Cited by 7 publications

(5 citation statements)

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“…Different approaches have been reported to enhance the fatigue properties of metallic materials and discussed in literature. [1][2][3] An effective method to enhance the low-cycle fatigue (LCF) properties is to use laminated metal composites (LMCs), in which different metals are bonded together. One key to enhance the fatigue life in these LMCs is the bifurcation of fatigue cracks.…”

Section: Introductionmentioning

confidence: 99%

“…One key to enhance the fatigue life in these LMCs is the bifurcation of fatigue cracks. [1][2][3] If the fatigue crack approaches the interface layer from a plastically weaker to a stronger material, the crack propagation rate can be diminished in the direct vicinity of the interface. [4,5] A highly effective method to enhance the high-cycle fatigue (HCF) properties of metallic materials is the transformation of the typically existing coarsegrained (CG) microstructure into the ultrafine-grained (UFG) regime by severe plastic deformation (SPD).…”

Section: Introductionmentioning

confidence: 99%

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Residual Stresses in Ultrafine‐Grained Laminated Metal Composites Analyzed by X‐ray Diffraction and the Hole‐Drilling Method

et al. 2022

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Accumulative roll bonding is an advanced manufacturing process, which is capable of simultaneously refining the grain size into the nanometer regime and bonding different metallic sheet materials. Herein, homogenous aluminum/aluminum as well as heterogeneous aluminum/steel laminated metal composite (LMCs) are fabricated. The residual stresses are experimentally determined by X‐ray diffraction and the hole‐drilling method. Generally, a complex residual stress profile is found in all LMCs. The level of residual stress strongly depends on the bonded materials. Compressive residual stresses are induced in all sheets in the near surface area. These stresses range from −5 MPa in aluminum to −240 MPa in steel. In the homogenous aluminum/aluminum LMCs, compressive stresses up to −26 MPa in the softer layers and tensile stresses up to 30 MPa in the stronger layers are built up. This is different to heterogeneous aluminum/steel LMCs, where tensile stresses up to 40 MPa in the softer aluminum layers and compressive stresses up to −72 MPa in the inner harder steel layers are present. Based on the results obtained it is possible to directly design the material combination or stacking architecture of ultrafine‐grained LMCs to tailor the residual stress profile.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Residual Stresses in Ultrafine‐Grained Laminated Metal Composites Analyzed by X‐ray Diffraction and the Hole‐Drilling Method

et al. 2022

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“…A recent study by Kümmel et al [ 46 ] provides a comprehensive overview on the potential of fatigue life enhancement in specifically tailored laminated metal composites by utilizing the inherent material inhomogeneity effects at the interfaces between dissimilar materials. An increase in fatigue life in LMC systems can be accomplished by (a) enhancing resistance against crack initiation based on load transfer from surface layers into adjacent stiffer layers (gradient in elastic properties at interfaces) [ 15 , 16 , 46 ], and (b) enhancing resistance against crack propagation based on toughening mechanisms at the interfaces (gradient in hardness and elastic properties at interfaces) [ 15 , 32 , 47 ].…”

Section: Introductionmentioning

confidence: 99%

About the Role of Interfaces on the Fatigue Crack Propagation in Laminated Metallic Composites

et al. 2021

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The influence of gradients in hardness and elastic properties at interfaces of dissimilar materials in laminated metallic composites (LMCs) on fatigue crack propagation is investigated experimentally for three different LMC systems: Al/Al-LMCs with dissimilar yield stress and Al/Steel-LMCs as well as Al/Ti/Steel-LMCs with dissimilar yield stress and Young’s modulus, respectively. The damage tolerant fatigue behavior in Al/Al-LMCs with an alternating layer structure is enhanced significantly compared to constituent monolithic materials. The prevalent toughening mechanisms at the interfaces are identified by microscopical methods and synchrotron X-ray computed tomography. For the soft/hard transition, crack deflection mechanisms at the vicinity of the interface are observed, whereas crack bifurcation mechanisms can be seen for the hard/soft transition. The crack propagation in Al/Steel-LMCs was studied conducting in-situ scanning electron microscope (SEM) experiments in the respective low cycle fatigue (LCF) and high cycle fatigue (HCF) regimes of the laminate. The enhanced resistance against crack propagation in the LCF regime is attributed to the prevalent stress redistribution, crack deflection, and crack bridging mechanisms. The fatigue properties of different Al/Ti/Steel-LMC systems show the potential of LMCs in terms of an appropriate selection of constituents in combination with an optimized architecture. The results are also discussed under the aspect of tailored lightweight applications subjected to cyclic loading.

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“…Fundamental research has been carried out by various researchers on the influence of such heterogeneous interfaces on the fatigue properties of LMCs, especially with a focus on the difference in hardness at the material interface. [ 16–23 ] The results show that the bifurcation of a fatigue crack in the vicinity of the material interface is the key to prolonged fatigue life, as this results in a reduced crack propagation rate. [ 20,21 ] The influence of a difference in the Young's modulus on the cracking behavior has also been previously studied in literature, mainly by different modeling approaches.…”

Section: Introductionmentioning

confidence: 99%

Ultrafine‐Grained Laminated Metal Composites: A New Material Class for Tailoring Cyclically Stressed Components

Kümmel

Höppel

2021

Adv Eng Mater

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Technical components are frequently exposed to cyclic loads. These cyclic stresses are often very small but can result in a severe failure of the material, although the applied stress amplitudes are significantly smaller than the yield value of the material. The phenomenon of material fatigue has been systematically investigated since the nineteenth century. [1,2] Nowadays, cyclically loaded parts are increasingly governed by new light-weight design concepts. Thus, new materials with a high-specific monotonic and cyclic strength come into play. For the prospective use of new light-weight material concepts in engineering applications, it is extremely important to understand the damage mechanisms that occur during cyclic loading in detail. Different approaches to enhance the fatigue life in aluminum-based materials that are cyclically are discussed in the following:One approach to enhance the fatigue life of materials is by increasing the strength of the material. This is often achieved by alloying. [3][4][5][6] However, one major drawback is that the corrosion properties often get worse in the higher alloyed systems, compared with less or unalloyed samples. [7] Another method to enhance the strength is given by grain refinement. The advantage of this method is that the increase in strength is achieved without changing the chemical composition of the material. Particularly effective methods to reduce the grain size up to the submicrometer range are the severe plastic deformation processes. [8][9][10] The materials are subjected to high plastic deformation without changing the cross-sectional shape of the material during these processes. It is possible to introduce a very high amount of plastic deformation and therefore also new dislocations into the material by repeating the process steps several times. These dislocations form new subgrains which transform by further deformation into high-angle grain boundaries as a result of energetic minimization. The cyclic properties of such ultrafine-grained (UFG) materials are significantly better in comparison with their coarse-grained (CG) counterparts. [10][11][12][13] The development of dislocation arrangements and/or structures that typically accommodate strain during fatigue in CG materials is hindered because of the small grain size in UFG materials. [14,15] Another highly interesting method to enhance the fatigue properties is to combine different materials, both in terms of mechanical strength, as well as Young's modulus, to laminated metal composites (LMCs). Fundamental research has been

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Evaluation of the quality of laminated metallic materials on the basis of high-frequency endurance and damping capacity

Cited by 7 publications

References 1 publication

Residual Stresses in Ultrafine‐Grained Laminated Metal Composites Analyzed by X‐ray Diffraction and the Hole‐Drilling Method

Residual Stresses in Ultrafine‐Grained Laminated Metal Composites Analyzed by X‐ray Diffraction and the Hole‐Drilling Method

About the Role of Interfaces on the Fatigue Crack Propagation in Laminated Metallic Composites

Ultrafine‐Grained Laminated Metal Composites: A New Material Class for Tailoring Cyclically Stressed Components

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