Nanostructured Aluminum and IF Steel Produced by Rolling—a Comparative Study

Huang, Xiaoxu; Kamikawa, Naoya; Tsuji, Nobuhiro; Hansen, Niels

doi:10.2355/isijinternational.48.1080

Cited by 17 publications

(10 citation statements)

References 38 publications

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“…The variation of the hardness and strength after aging treatment remains to be further studied. Huang et al and Tsuji et al [51,52] comparatively studied the cold rolled deformation of nanostructured pure aluminum and IF steel. After aging treatment, the stress of pure aluminum and IF steel increases while the dislocation density decreases, and this indicates that the presence of a certain amount of interior dislocations in the nanostructures produces softening rather than hardening as is observed in conventional coarse grained materials.…”

Section: Discussionmentioning

confidence: 99%

Preparation and Mechanical Behavior of Ultra-High Strength Low-Carbon Steel

Qian

Liu

et al. 2020

Materials

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The low-carbon steel (~0.12 wt%) with complete martensite structure, obtained by quenching, was cold rolled to get the high-strength steel sheets. Then, the mechanical properties of the sheets were measured at different angles to the rolling direction, and the microstructural evolution of low-carbon martensite with cold rolling reduction was observed. The results show that the hardness and the strength gradually increase with increasing rolling reduction, while the elongation and impact toughness obviously decrease. The strength of the sheets with the same rolling reduction are different at the angles of 0°, 45°, and 90° to the rolling direction. The tensile strength (elongation) along the rolling direction is higher than that in the other two directions, but the differences between them are not obvious. When the aging was performed at a low temperature, the strength of the initial martensite and deformed martensite increased with increasing aging time during the early stages of aging, followed by a gradual decrease with further aging. However, the elongation increases with increasing aging time. The change of hardness is consistent with that of strength for the cold-rolled martensite, while the hardness of the initial martensite decreases gradually with increasing aging time.

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Section: Discussionmentioning

confidence: 99%

Preparation and Mechanical Behavior of Ultra-High Strength Low-Carbon Steel

Qian

Liu

et al. 2020

Materials

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“…23,[34][35][36] For example, the bimodal nanostructures that manage both strength and ductility 23,33) may provide a new idea of structure control. Furthermore, Huang et al 35,36) have recently reported a "hardening by annealing and softening by deformation" phenomenon that is totally opposite to the conventional knowledge for metals and alloys. Such peculiar phenomena are due to the nanostructures where crystalline space is finly subdivided in nanometer scales by high-angle boundaries.…”

Section: Concluding Remarkmentioning

confidence: 99%

Managing Both Strength and Ductility in Ultrafine Grained Steels

et al. 2008

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“…Bulk metallic materials are usually subjected to severe plastic deformation processes such as equal channel angular pressing, [1][2][3] accumulative roll bonding, [4,5] or hot pressure torsion [6] in order to achieve an UFG microstructure. Whereas these processes were successful in terms of realizing ultra-high strengths, two essential features, i.e., retaining ductility and fracture toughness for shape forming, have proven difficult.…”

Section: Introductionmentioning

confidence: 99%

Localized Deformation in Multiphase, Ultra-Fine-Grained 6 Pct Mn Transformation-Induced Plasticity Steel

Lee

Kumar

et al. 2011

Metall Mater Trans A

189

105

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Multiphase, ultra-fine-grained transformation-induced plasticity (MP UFG TRIP) steel containing 6 mass pct Mn was obtained by cold rolling and intercritical annealing of an initially fully martensitic microstructure. UFG microstructures with an average grain size less than 300 nm were obtained. The amount of austenite in the microstructures, speculated to be formed by diffusionless transformation, was controlled by changing the intercritical temperature. The tensile properties were strongly influenced by the volume amount and the stability of the reversely transformed austenite. The MP UFG TRIP steel was characterized by pronounced localization of the deformation. The deformation band properties were analyzed in detail.

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Nanostructured Aluminum and IF Steel Produced by Rolling—a Comparative Study

Cited by 17 publications

References 38 publications

Preparation and Mechanical Behavior of Ultra-High Strength Low-Carbon Steel

Preparation and Mechanical Behavior of Ultra-High Strength Low-Carbon Steel

Managing Both Strength and Ductility in Ultrafine Grained Steels

Localized Deformation in Multiphase, Ultra-Fine-Grained 6 Pct Mn Transformation-Induced Plasticity Steel

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