Effect of dimple patterning conditions of Periodical Straining Rolling on microstructures and mechanical properties of AZ31 sheets

Kudo, Shingo; Yokoyama, S.; Shimoyama, Kazuki; Kaneko, S.; Fujita, Fumitaka

doi:10.1016/j.msea.2016.10.056

Cited by 13 publications

(2 citation statements)

References 25 publications

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“…The original coarse grain might be broken and recrystallize during the rolling process and subsequent heat treatment. The Mg/Al laminated composite is elongated and the intrinsically hard and brittle interfacial compounds are broken along the rolling direction [47]. Meanwhile, the transverse extension of composites is often neglected [48].…”

Section: Interfacial Microstructure After Intermediate Annealingmentioning

confidence: 99%

Microstructure Characterization and Mechanical Property of Mg/Al Laminated Composite Prepared by the Novel Approach: Corrugated + Flat Rolling (CFR)

Wang

Ren

et al. 2019

Metals

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In this paper, Mg/Al laminated composites were successfully prepared at 400 °C by corrugated + flat rolling (CFR) with reduction ratios of 35% and 25% and subsequent annealing treatments were conducted at 200–350 °C for 30 min. A two-dimensional model was established to analyze the strain distribution during the first corrugated rolling process. Simulation results indicated that severe plastic deformation was formed at trough positions, which included more numerous refined grains than in the peak positions. The interfacial microstructure and mechanical property of the flattened composites along the rolling direction (RD) and the transverse direction (TD) were investigated. The results revealed that longitudinal discontinuous and transverse continuous interfacial intermetallic compounds (IMCs) were observed of the flattened as-rolled sample. Spatial distribution was provided for the grain microstructure along the thickness and rolling direction for AZ31B magnesium alloys of the CFR as-rolled composite. Mechanical property results showed that the longitudinal ultimate tensile strength (UTS) and elongation (EL) of the as-rolled sample reached 255 MPa and 4.14%, respectively. The as-rolled UTS along TD reached 325 MPa, about 30% higher than that along the RD. After heat treatment, the anisotropy of mechanical properties remained. The microstructure evolution and mechanical properties were discussed in detail.

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Section: Interfacial Microstructure After Intermediate Annealingmentioning

confidence: 99%

Microstructure Characterization and Mechanical Property of Mg/Al Laminated Composite Prepared by the Novel Approach: Corrugated + Flat Rolling (CFR)

Wang

Ren

et al. 2019

Metals

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“…When AZ31 Mg alloy is deformed by integrating forward extrusion and torsion deformation, the dynamic recrystallization is induced by the heavily accumulated strains, and the grains are refined and the basal texture is dramatically weakened [3]. Shingo [4] have proposed the novel rolling process to improve the microstructure property and plastic formability of AZ31 magnesium alloy, which is called periodical straining rolling (PSR). During deformation twinning of AZ31 magnesium alloy, twin nucleation is found to be mostly controlled by a combination of grain size, and bulk dislocation density while twin propagation is affected most by grain boundary length [5].…”

Section: Introductionmentioning

confidence: 99%

Microstructure of AZ31 Magnesium Alloy deformed by indentation-flattening compound deformation technology

Wang

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Anticorrosive magnesium hydroxide coating on AZ31 magnesium alloy by hydrothermal method Yanying Zhu, Guangming Wu, Qing Zhao et al. Abstract: Characteristic of indentation-flattening compound deformation technology (IFCDT) is discussed, and the parameters of IFCDT are defined. Performance of magnesium alloy AZ31 sheet deformed by IFCDT is researched. The effect of IFCDT coefficient, temperature and reduction ratio on the microstructure of magnesium alloy sheet is analyzed. The research results show that the volume fraction of the twin crystal decreases gradually and the average grain size increases with increasing of coefficient of IFCDT. With increase of the reduction ratio, the volume fraction of the twin crystal gradually increases, and the average grain size also increases. With increase of deformation temperature, the volume fraction of the twin crystal decreases gradually, and the twin crystal grain size increases.

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Asperity Forming Using Printed Tools in Rolling

Yoshikawa,

Nishiyama,

Sakamoto

2023

Lecture Notes in Mechanical Engineering

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Effect of dimple patterning conditions of Periodical Straining Rolling on microstructures and mechanical properties of AZ31 sheets

Cited by 13 publications

References 25 publications

Microstructure Characterization and Mechanical Property of Mg/Al Laminated Composite Prepared by the Novel Approach: Corrugated + Flat Rolling (CFR)

Microstructure Characterization and Mechanical Property of Mg/Al Laminated Composite Prepared by the Novel Approach: Corrugated + Flat Rolling (CFR)

Microstructure of AZ31 Magnesium Alloy deformed by indentation-flattening compound deformation technology

Asperity Forming Using Printed Tools in Rolling

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