A new route to fabricate multilayer steel with multiscale hierarchical structure

Zhang, B.Y.; Liu, B.X.; He, Jun; Ji, Puguang; Zhang, X.; Fang, Wei; Feng, Jianhang; Hu, Xiaowen; Yin, Fuxing

doi:10.1016/j.matchar.2020.110606

Cited by 7 publications

(2 citation statements)

References 37 publications

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“…Figure 3 shows the EPMA surface scanning maps of multilayer 18Mn/40Si2CrMo steel. As can be seen from the figure, when the warm rolling temperatures are low, the interface shape is curved and local necking was found at lower temperatures (400-450 °C), because of different hardening rates of 18Mn and 40Si2CrMo leading to unstable behavior [19]. As the warm rolling temperature increases, the interface between the multilayer composite steel becomes flat, so the plastic deformation capacity can be improved by increasing the warm rolling temperatures.…”

Section: Microstructurementioning

confidence: 97%

Warm Rolled Temperature Effect on Microstructure and Mechanical Properties of 18Mn/40Si2CrMo Multilayer Composite Steel

Yang

Fan

et al. 2022

Crystals

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In order to obtain a good strength-plastic/toughness match relationship, 18Mn/40Si2CrMo multilayer composite steels were successfully fabricated by a vacuum hot rolling and warm rolling process in this paper. The effects of different warm rolling temperatures (400–600 °C) on the microstructure and mechanical properties of the multilayer composite steel were systematically investigated. The result shows that the warm rolling process reduces thickness of the interfacial diffusion layer, which improves the interfacial bonding strength of multilayer composite steel. With the increase of warm rolling temperature, the total elongation (TEL) increases but ultimate tensile strength (UTS) decreases. The multilayer composite steel with a warm temperature of 500 °C achieves the balance of strength and plastic of which the UTS and TEL are 1.7 GPa and 12.5%, respectively. This is due to the high work-hardening ability of deformation twins of the 18Mn layer and the precipitates nanoscale carbides of the 40Si2CrMo layer to obscure the dislocation movement.

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Section: Microstructurementioning

confidence: 97%

Warm Rolled Temperature Effect on Microstructure and Mechanical Properties of 18Mn/40Si2CrMo Multilayer Composite Steel

Yang

Fan

et al. 2022

Crystals

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“…Toshihiko et al [9] found that multilayer steel has good comprehensive mechanical properties through interface delamination and tunnel crack toughening mechanisms in the process from development to application. Many studies had shown that the physical, chemical, and mechanical properties of multilayer steels were much better than those of constituent metal materials [10,11]. As shown in Figure 1, most of the component materials were located below the "banana curve" (strength-toughness trade off relationship curves), while the multilayer steels were significantly higher than the banana curve and have strengthtoughness synergism.…”

Section: Introductionmentioning

confidence: 99%

Interface Strengthening and Toughening Mechanism of Hot Rolled Multilayer TWIP/40Si2CrMo Steels

Dong

Liu

et al. 2022

Crystals

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Layered metal composites play an increasingly important role in aerospace, automotive, and nuclear energy. Compared with a single metal or alloy, the layered metal composite exhibits an excellent strong-plastic matching effect. In this paper, multilayer TWIP/40Si2CrMo steels with different hot rolling reductions were successfully fabricated by the vacuum hot rolling. The results show that the multilayer steels can improve the lower yield strength of TWIP steel and lower the fracture elongation of 40Si2CrMo steel. In addition, with the increase of the hot rolling reduction, the mechanical properties and interfacial bonding strength of multilayer steels were improved, while the size and number of interfacial oxides decrease, and the fracture mode was also changed. This shows that a higher hot rolling reduction will promote the breakage of the interface oxides and make them appear dispersed, thereby improving the bonding strength of the interface, effectively suppressing the delamination and local necking of the multilayer steel, and making the multilayer steel show a higher ability of uniform plastic deformation. At the same time, under the dual action of layer thickness scale and interface strengthening effect, the brittle layer of multilayer steel presents a multiple tunnel crack mode. It was beneficial to alleviate the stress concentration and further improve the strengthening and toughening effect of multilayer steel.

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Effect of Heat Treatment on the Interfacial Structure and Microstructure of Al/Al/Cu Composites Prepared by Different Accumulative Roll Bonding Passes

Lei,

Zhang,

Zhao

et al. 2024

Adv Eng Mater

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The effects of heat treatment ((300–500 °C) × 30 min) on the interfacial structure, microstructure, and tensile properties of Al4343/Al3003/Cu composites prepared by different accumulative roll bonding (ARB) passes are studied by scanning electron microscopy, energy dispersion spectrometry, electron backscattered diffraction, and tensile tests at room temperature. The results show that the total thickness of the diffusion layer at the Al3003/Cu interface in the same ARB pass Al/Al/Cu composite increases with the increase in temperature. At the same temperature, the total thickness of the diffusion layer at the Al3003/Cu interface increases from ARB0 to ARB3 passes and decreases at ARB5 passes. In the same ARB pass Al/Al/Cu composites, the grains of Al4343 grow with the increase of temperature; the grain of Al3003 increases slightly from 300 to 400 °C, and grows along the interface direction after 500 °C. After 400 and 500 °C, the final average grain size of Cu decreases from ARB0 to ARB3 passes and increases slightly at ARB5 passes. The tensile properties of the composites are affected by recovery and recrystallization at lower temperatures and ARB passes, and by the total thickness and volume fraction of the diffusion layer at higher temperatures and ARB passes.

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A new route to fabricate multilayer steel with multiscale hierarchical structure

Cited by 7 publications

References 37 publications

Warm Rolled Temperature Effect on Microstructure and Mechanical Properties of 18Mn/40Si2CrMo Multilayer Composite Steel

Warm Rolled Temperature Effect on Microstructure and Mechanical Properties of 18Mn/40Si2CrMo Multilayer Composite Steel

Interface Strengthening and Toughening Mechanism of Hot Rolled Multilayer TWIP/40Si2CrMo Steels

Effect of Heat Treatment on the Interfacial Structure and Microstructure of Al/Al/Cu Composites Prepared by Different Accumulative Roll Bonding Passes

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