High temperature deformations of Mg–Y–Nd alloys fabricated by different routes

Liu, Xibo; Chen, Rongshi; Han, En‐Hou

doi:10.1016/j.msea.2008.07.024

Cited by 34 publications

(18 citation statements)

References 25 publications

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“…However, the level of work hardening as well as the maximum stress decreased as the initial strain rate decreased and the test temperature increased; a stationary deformation area and massive extension were observed under low stress. These behaviors are consistent with the high-temperature deformation and superplastic behavior of AZ-type Mg alloys [30,31], Mg-RE (rare-earth) alloys [32,33], and Al-Mg alloys [34]. Figure 4 shows the effects of test temperature and strain rate on breaking elongation.…”

Section: Mechanical Properties Of Highsupporting

confidence: 77%

Transition in Deformation Mechanism of AZ31 Magnesium Alloy during High-Temperature Tensile Deformation

Noda

Mori

Funami

2011

Journal of Metallurgy

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Magnesium alloys can be used for reducing the weight of various structural products, because of their high specific strength. They have attracted considerable attention as materials with a reduced environmental load, since they help to save both resources and energy. In order to use Mg alloys for manufacturing vehicles, it is important to investigate the deformation mechanism and transition point for optimizing the material and vehicle design. In this study, we investigated the transition of the deformation mechanism during the high-temperature uniaxial tensile deformation of the AZ31 Mg alloy. At a test temperature of 523 K and an initial strain rate of 3 × 10 −3 s −1 , the AZ31 Mg alloy (mean grain size: ∼5 μm) exhibited stable deformation behavior and the deformation mechanism changed to one dominated by grain boundary sliding.

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Section: Mechanical Properties Of Highsupporting

confidence: 77%

Transition in Deformation Mechanism of AZ31 Magnesium Alloy during High-Temperature Tensile Deformation

Noda

Mori

Funami

2011

Journal of Metallurgy

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“…Furthermore, the machining temperature of magnesium alloy is usually higher than 200 °C [5,6], which causes grain growth and a lower strength, due to the large grains. Therefore, it is important to improve the plasticity of magnesium alloys and their comprehensive properties [7,8,9,10].…”

Section: Introductionmentioning

confidence: 99%

The Effect of ECAP Temperature on the Microstructure and Properties of a Rolled Rare Earth Magnesium Alloy

Tan

et al. 2019

Materials

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Deformation of an as-rolled rare earth Mg-2Y-0.6Nd-0.6Zr alloy, at different temperatures, was carried out along the BC (90° anticlockwise rotation of the samples after each ECAP pass) route by equal channel angular pressing (ECAP). The effects of the deformation temperature and the predeformation on the microstructure of the magnesium alloy were determined by the microstructure examination. The slip systems and texture change of the Mg-2Y-0.6Nd-0.6Zr alloy were investigated by X-ray diffraction (XRD) and electron backscattered diffraction (EBSD), after equal channel angular deformation. The results showed that after seven passes of rolling, the grain size in the Mg-2Y-0.6Nd-0.6Zr alloy was refined to approximately 22 µm and the slip occurred mainly by a cylindrical slip and a pyramidal slip. After one pass of ECAP at 340 °C, the internal average grain size was significantly reduced to 11 µm, the cylindrical diffraction intensity clearly weakened, and the pyramidal diffraction intensity increased. EBSD pole figure analysis revealed that the base texture of the rolled Mg-2Y-0.6Nd-0.6Zr alloy weakened from 24.31 to 11.34 after ECAP. The mechanical properties indicated that the tensile strength and elongation of the rolled Mg-2Y-0.6Nd-0.6Zr alloy reached maximum values, when the deformation temperature was 340 °C.

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“…Watanabe et al investigated the superplasticity behavior of a fine-grained ( $ 2 μm) WE43 alloy prepared by hot extrusion, the elongations over 1000% were obtained at the temperature of 673 K with a strain rate of 3 Â 10 À 3 s À 1 and 4 Â 10 À 4 s À 1 , but the elongations were all below 800% when tested at high strain rates (εŻ 10 À 2 s À 1 ) [3]. In addition, the superplasticity of WE54 alloy fabricated by ECAE (4.4 μm) was also under 400% when tested at high strain rates [22]. It implies that the finer grains result in better HSRS for Mg alloys.…”

Section: Methodsmentioning

confidence: 96%

Superplastic behavior and microstructure evolution of a fine-grained Mg–Y–Nd alloy processed by submerged friction stir processing

Cao

Zhang

Chai

et al. 2015

Materials Science and Engineering: A

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High temperature deformations of Mg–Y–Nd alloys fabricated by different routes

Cited by 34 publications

References 25 publications

Transition in Deformation Mechanism of AZ31 Magnesium Alloy during High-Temperature Tensile Deformation

Transition in Deformation Mechanism of AZ31 Magnesium Alloy during High-Temperature Tensile Deformation

The Effect of ECAP Temperature on the Microstructure and Properties of a Rolled Rare Earth Magnesium Alloy

Superplastic behavior and microstructure evolution of a fine-grained Mg–Y–Nd alloy processed by submerged friction stir processing

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