Hardness Variation and Strain Distribution in Magnesium Alloy AZ31 Processed by Multi‐pass Caliber Rolling

Inoue, Tatsuo; Somekawa, Hidetoshi; Mukai, Toshiji

doi:10.1002/adem.200900103

Cited by 32 publications

(17 citation statements)

References 26 publications

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“…The billet was passed through 6 or 14 times and twice for the final groove to control the cross-sectional shape of the bar, and then was quenched in water (hereafter, denoted as 7-and 15-passed alloys). The detailed experimental procedure is reported elsewhere [25,26] .…”

Section: Methodsmentioning

confidence: 99%

Enhancing Fracture Toughness of Magnesium Alloy by Formation of Low‐Angle Grain Boundary Structure

et al. 2010

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The effect of the low angle grain boundary structure on the mechanical properties and deformation behavior was investigated using Mg‐Al‐Zn alloys, which were produced by caliber rolling. The {10–12} deformation twins were formed at the head of the crack‐tip during fracture toughness even in the fine‐grained structures; however, the present caliber rolled alloys showed high strength and fracture toughness balance that resulted from the high fraction of low‐angle grain boundaries, which did not become the origin of the micro‐void formation.

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Section: Methodsmentioning

confidence: 99%

Enhancing Fracture Toughness of Magnesium Alloy by Formation of Low‐Angle Grain Boundary Structure

et al. 2010

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“…Inoue et al investigated the strain distribution in the SM490 steel by a finite element analysis and deformed microstructure observation. 7,8) Higher strain accumulation at the corner area of the specimen was found to be higher than the center area.…”

Section: Introductionmentioning

confidence: 94%

“…Inoue et al 8) evaluated by a finite element analysis that the equivalent strain ¾ eq introduced by 94%…”

Section: % Rolled 95% Rolled As Castmentioning

confidence: 99%

Caliber Rolling Process and Mechanical Properties of High Fe-Containing Al–Mg–Si Alloys

et al. 2012

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Fe-intermetallic compounds are commonly detrimental for mechanical properties and formability of aluminum alloys. In this study, the refinement of Fe-intermetallic compounds and mechanical properties in high Fe-containing AlMgSi alloys were studied by caliber rolling. The Al(2.22.3) mass%Si0.9 mass%Mg(1, 1.5 and 2) mass%Fe alloys were severely deformed by the multi-pass caliber rolling at 573 and 723 K. Fe-intermetallic compounds were finely fragmented with the smallest size of around 200 nm. The morphologies of fragmented Fe compounds in the Al matrix depend on the as-cast microstructure and deformation behavior with better distribution in the outer area than in the center area. Good ultimate strength of 345360 MPa and high elongation of 1525% were achieved after 95% caliber rolling.

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“…Next, the bar was tempered at 773 K for 1 h and then water-cooled. The SM490 sample with a chemical composition of 0.15 C, 0.3 Si and 1.5 Mn was heated to 900°C and held for 1 h, followed by air cooling (Inoue et al (2009)). The principal axes of the rolled bar in this study are defined as shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

Strength-toughness balance of low-alloy steel by fail-safe design

Inoue¹,

Kimura²,

Qiu³

2015

Mechanical Engineering Letters

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Microstructural design for improving the strength-toughness balance was studied in low-alloy steel. High-strength medium-carbon steels with an ultrafine elongated grain (UFEG) structure with an average transverse grain size of 0.3 m and an ultrafine equiaxed grain (UFG) structure with a grain size of 0.7 m were fabricated by multi-pass caliber rolling at a warm working temperature and subsequent annealing. For comparison, conventionally quenched and tempered steel with a martensitic structure and a 480 MPa-class low-carbon steel with a ferrite (grain size 20m)-pearlite structure were also prepared. A quasi-static three-point bending test was conducted at a temperature range from 200°C to -196°C. The steels, except for the UFEG steel, exhibited a typical energy transition curve, in which the fracture energy decreases with decreasing temperature. In the UFEG steel, the fracture energy increased with the occurrence of delaminating cracks as the temperature decreased from 200°C, reached a maximum at ambient temperature, and then decreased. In other words, the steel showed inverse temperature dependence of the toughness. As a result, the strengthtoughness balance of the UFEG steel was excellent compared with that of all other steels. For stronger, tougher steel, it is important to design a heterogeneous microstructure rather than a homogeneous microstructure.

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Hardness Variation and Strain Distribution in Magnesium Alloy AZ31 Processed by Multi‐pass Caliber Rolling

Cited by 32 publications

References 26 publications

Enhancing Fracture Toughness of Magnesium Alloy by Formation of Low‐Angle Grain Boundary Structure

Enhancing Fracture Toughness of Magnesium Alloy by Formation of Low‐Angle Grain Boundary Structure

Caliber Rolling Process and Mechanical Properties of High Fe-Containing Al–Mg–Si Alloys

Strength-toughness balance of low-alloy steel by fail-safe design

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Hardness Variation and Strain Distribution in Magnesium Alloy AZ31 Processed by Multi‐pass Caliber Rolling

Cited by 32 publications

References 26 publications

Enhancing Fracture Toughness of Magnesium Alloy by Formation of Low‐Angle Grain Boundary Structure

Enhancing Fracture Toughness of Magnesium Alloy by Formation of Low‐Angle Grain Boundary Structure

Caliber Rolling Process and Mechanical Properties of High Fe-Containing Al&ndash;Mg&ndash;Si Alloys

Strength-toughness balance of low-alloy steel by fail-safe design

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Caliber Rolling Process and Mechanical Properties of High Fe-Containing Al–Mg–Si Alloys