Hot rolling bonded multilayered composite steels and varied tensile deformation behaviour

Yin, Fuxing; Li, L; Tanaka, Yoshihisa; Kishimoto, Seiji; Nagai, Kotobu

doi:10.1179/1743284711y.0000000116

Cited by 27 publications

(11 citation statements)

References 9 publications

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“…It was proposed that the cracks along the laminated interfaces results in the bending of the laminas and enlarging of the deformation volume, and finally gives the ultrahigh impact toughness. 4. The formation mechanisms of the microlaminated DP steel need to be explored further, which would benefit the fabrication and application of the low cost and high performance steel with high strength and high toughness.…”

Section: Discussionmentioning

confidence: 99%

Microlaminated dual phase steel presenting with high strength and ultrahigh toughness

Zhang

Cao

et al. 2015

Materials Science and Technology

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In the present study, a steel with the chemical composition of Fe-0?15 wt-%C-5 wt-%Mn-3 wt%Al was designed. Its microstructure and mechanical properties were examined by optical microscopy, scanning electron microscopy and mechanical tests. It was found that hot rolling in the dual phase region of ferrite and austenite at high temperature resulted in microlaminated dual phase microstructure. An excellent combination of high strength (y1200 MPa) and ultrahigh impact toughness (y400 J) of the microlaminated dual phase steel was obtained. Based on the measurement of the phase volume fraction and the analysis of the fractography, it was shown that the high strength was mainly dependent on the high martensite volume fraction, while the ultrahigh impact toughness was attributed to the microlaminated microstructure.

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Section: Discussionmentioning

confidence: 99%

Microlaminated dual phase steel presenting with high strength and ultrahigh toughness

Zhang

Cao

et al. 2015

Materials Science and Technology

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“…Roll bonding is a type of welding process in which a stack of similar or dissimilar metals is passed through rollers to promote a good bond between the metallic sheets at the cost of reduction in thickness. Yin et al [2] recognized hot roll bonding as the most effective method to fabricate layered materials.…”

Section: Introductionmentioning

confidence: 99%

Delamination analysis in single-point incremental forming of steel/steel bi-layer sheet metal

Hassan

Hussain

Ilyas

et al. 2020

Archiv.Civ.Mech.Eng

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Layered metallic materials (LMMs) offer superior properties in comparison to their counterpart monolithic sheets. Singlepoint incremental forming (SPIF) has emerged as an economical solution to produce LMM parts. However, delamination can limit the formability of such parts. In this study, the delamination analysis during SPIF of layered sheets was performed. Steel/steel bi-layer sheets were fabricated by roll bonding. These sheets were produced at thickness reduction ratios of 47%, 58% and 70%. The bond strength and fracture toughness in mode I and mode II were determined by T-peel and tensile shear tests, respectively. When the thickness reduction ratio was increased from 47 to 70%, an increase in bond strength was observed with 572% increase in mode I and 15.6% in mode II, respectively. On the other hand, with the same percent increase in thickness reduction, the critical strain energy release showed an increase of 3992% in mode I and 20% decrease in mode II. Surface-based cohesive zone model was used to define the interface between layers during numerical simulation of SPIF for delamination analysis. To validate the numerical results, SPIF of given bi-layer sheet was performed experimentally and a good agreement between the numerical and experimental results was observed.

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“…During the impact testing process, the laminated composites can absorb lots of impact works through forming delamination cracks, and it is expected to be applied in the armor equipment and ballistic system. In 2006, Japan government sponsored a research project named "the layer integrated steel and metals," which aims to fabricate multilayer steel with high strength (>1200 MPa) and superior tensile elongation (>20%) through the composite design of high strength steels and ductile steel layers [36]. In 2008, Inoue et al [37] fabricated multilayered SS420/SS304 steel with high toughness and reported that fracture elongation is gradually increasing with the decrease of layer thickness, which is attributed to the decreasing size of tunnel cracks.…”

Section: Laminated Structurementioning

confidence: 99%

Multiscale Hierarchical Structure and Laminated Strengthening and Toughening Mechanisms

Liu¹,

Huang²,

Li³

et al. 2018

Lamination - Theory and Application

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Metal matrix composites with multiscale hierarchical structure and laminated structure have been developed to provide a novel route to achieve high strength, toughness and ductility. In this chapter, a lot of scientific research has been carried out in the preparation, processing, properties and application of metal matrix composite. Many toughening mechanisms and fracture behavior of composites with multiscale hierarchical structure and laminated structure are overviewed. It is revealed that elastic property and yield strength of laminated composites follow the "rule of average." However, the estimation of fracture elongation and fracture toughness is complex, which is inconsistent with the "rule of average." The fracture elongation of laminated composites is related to the layer thickness size, interface, gradient structure, strain hardening exponent, strain rate parameter and tunnel crack, which are accompanied with crack deflection, crack blunting, crack bridging, stress redistribution, local stress deformation, interfacial delamination crack and so on. The concept of laminated composites can be extended by applying different combination of individual layer, and provides theoretical as well as experimental fundamentals on strengthening and toughening of metal matrix composites.

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Hot rolling bonded multilayered composite steels and varied tensile deformation behaviour

Cited by 27 publications

References 9 publications

Microlaminated dual phase steel presenting with high strength and ultrahigh toughness

Microlaminated dual phase steel presenting with high strength and ultrahigh toughness

Delamination analysis in single-point incremental forming of steel/steel bi-layer sheet metal

Multiscale Hierarchical Structure and Laminated Strengthening and Toughening Mechanisms

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