Fracture and deformation potential of magnesium alloys at low temperatures

Bussiba, A.; Kupiec, M.; Ifergane, S.; Stechman, A.; Ben-Artzi, A.

doi:10.1063/1.1472529

Cited by 2 publications

(5 citation statements)

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“…DCT was done in liquid nitrogen for 4, 8, and 16 h at −196 • C (77.15 K). The volume fraction of α-Mg and Al 4 RE phases in the microstructure of AE42 changed significantly with the length of time of DCT. The amount of α-Mg increases with duration of DCT whereas the amount of Al 4 RE decreases.…”

Section: Cryogenic Treatment Of Magnesium Alloysmentioning

confidence: 99%

“…Two magnesium alloys, ZK60 (Mg-4.9Zn-0.49Zr) and AZ31 (Mg-2.5Al-0.092Zn-0.37Mn), were tested mechanically in the temperature range of 123 K to 296 K [4]. ZK60 materials were extruded at 593 K followed by heat treatment for 2 h at 775 K. The resulting average grain size was 30 µm.…”

Section: Mechanical Properties At Cryogenic Temperaturesmentioning

confidence: 99%

“…Fracture toughness Kc is summarized in Table 1 and it can be clearly seen that toughness in the L-T direction is higher than in the T-L direction. ] as a function of temperature and orientation (L: longitudinal or rolling direction, T: transverse direction, and S: thickness of the sheet) [4]. Several aluminum and magnesium alloys were tested in [17] at low temperatures for their tensile strength and fatigue.…”

Section: Mechanical Properties At Cryogenic Temperaturesmentioning

confidence: 99%

“…Twinning mainly takes place at {10-11}, {10-12}, and {10-13} planes at low temperatures and at higher strain rates [2,3] which are needed to satisfy the von Mises yield criterion for unrestricted plastic deformation. These twinning effects may also act as a trigger for brittle fracture and enhance micro-cracks, which are undesired effects in structural materials [4].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Cryogenic Temperatures on the Microstructure and Mechanical Properties of Magnesium Alloys: A Review

Dieringa

2017

Metals

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Magnesium alloys have been used in the automotive industry and 3C (computer, communication, and consumer electronics) for many years. Their room temperature properties combined with their low density offer a wide range of applications, especially when processed by High Pressure Die Casting (HPDC). The use of magnesium alloys at higher temperatures is well-studied; special creep resistant alloys containing the rare earth elements silver or yttrium are needed. However, when it comes to very low temperatures, only a few studies have been performed to determine the property-microstructure relationship. The possible fields of application at low temperatures are aerospace and satellite parts and tanks for liquefied gases. This review shall not only examine mechanical properties at low temperatures, but also the permanent effects of cyclic or long-lasting cryogenic treatment on the microstructure and mechanical properties. It was found that cryogenic treatment is able to influence the precipitate concentration and grain orientation in some magnesium alloys. Reduction in the number of brittle phases is improving ductility in some cases. It is well-known that high speed tool steels, in particular, can be influenced by cryogenic treatment. Whether this is possible with magnesium alloys and what the mechanisms are shall be reviewed.

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Section: Cryogenic Treatment Of Magnesium Alloysmentioning

confidence: 99%

Section: Mechanical Properties At Cryogenic Temperaturesmentioning

confidence: 99%

Section: Mechanical Properties At Cryogenic Temperaturesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Cryogenic Temperatures on the Microstructure and Mechanical Properties of Magnesium Alloys: A Review

Dieringa

2017

Metals

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“…Bussiba et al [6] studied the uniaxial mechanical response of round specimens made of ZK60 and AZ31 magnesium alloys at temperatures of 123 K and 296 K. A completely different behavior was found for the two materials, namely ductile in the case of ZK60 and semi-brittle for the AZ31. This was attributed to the presence of different second phases, which were found to be responsible of controlling both the non-basal and basal plane slip activities.…”

Section: Introductionmentioning

confidence: 99%

Temperature-Dependent Fracture Loci of AZ31 Magnesium Alloy Sheets

et al. 2021

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Magnesium alloys have been used in the automotive and aereospace industry for several years, thanks to their high strength-to-density ratio. Their mechanical characteristics at room and even at elevated temperature have been well-studied, whereas, when it comes to temperatures lower than the room one, only a few studies are available in literature. To this aim, the present paper investigates the mechanical behaviour of AZ31 magnesium alloy sheets deformed at different temperature regimes. Tensile tests till fracture were carried out at room temperature, -100 °C, -50°C, 100°C and 300°C using different specimen geometries in order to vary the stress triaxiality. The fracture strain values were identified making use of a combined numerical-experimental approach, whereas the fracture surfaces were qualitatively characterized by means of stereoscopy and scanning electron microscopy. Finally, the AZ31 fracture locus as a function of the stress state and temperature was constructed.

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Fracture and deformation potential of magnesium alloys at low temperatures

Cited by 2 publications

References 0 publications

Influence of Cryogenic Temperatures on the Microstructure and Mechanical Properties of Magnesium Alloys: A Review

Influence of Cryogenic Temperatures on the Microstructure and Mechanical Properties of Magnesium Alloys: A Review

Temperature-Dependent Fracture Loci of AZ31 Magnesium Alloy Sheets

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