Microstructure Evolution and Mechanical Properties of Mg‐14%Li‐1%Al Alloy during the High‐Pressure Torsion

Tian, Chuanmao; Lu, Huimin; Zhao, Liyuan

doi:10.1002/9781118888179.ch34

Magnesium Technology 2014 2014

DOI: 10.1002/9781118888179.ch34

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Microstructure Evolution and Mechanical Properties of Mg‐14%Li‐1%Al Alloy during the High‐Pressure Torsion

Chuanmao Tian

Huimin Lu

Liyuan Zhao

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2021

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“…Figure 7. a) Room-temperature tensile stressÀstrain curves of the as-received and five-pass swaged samples. b) Comparison of specific strength with various MgÀLi alloys in the published literature [1,2,4,6,[19][20][21][22][23][24][25][26][27][28][29][30]. c) Comparison of yield strength with various high-strength MgÀLi alloys in the published literature [5][6][7][21][22][23][24][25][29][30][31][32][33][34].…”

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Fabrication of Nanocrystalline High‐Strength Magnesium−Lithium Alloy by Rotary Swaging

et al. 2021

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A high‐strength magnesium‐lithium alloy is successfully fabricated via cold rotary swaging herein. The microstructure evolution in the central and edge regions of the alloy bar during the swaging process is explored using transmission electron microscopy. The results show that nanograins with high‐angle grain boundaries are formed in the central region of the alloy bar after five‐pass swaging, resulting in higher microhardness and strength obtained in the central region than in the edge region. The sample in the central region of the five‐pass swaged alloy bar exhibits a specific strength of 313 kN m kg−1 and a yield strength of 463 MPa. The nanocrystallization process of initial coarse grains in the central region of the alloy bar contains massive twinning first and subsequent refinement of twin/matrix lamellae through the formation of many dislocation arrays. However, it is not possible to form nanograins in the edge region of the alloy bar after five‐pass swaging because of the lower twinning activity and the difficulty of forming dislocation arrays compared with the central region.

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Fabrication of Nanocrystalline High‐Strength Magnesium−Lithium Alloy by Rotary Swaging

et al. 2021

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Microstructure Evolution and Mechanical Properties of Mg‐14%Li‐1%Al Alloy during the High‐Pressure Torsion

Cited by 1 publication

References 4 publications

Fabrication of Nanocrystalline High‐Strength Magnesium−Lithium Alloy by Rotary Swaging

Fabrication of Nanocrystalline High‐Strength Magnesium−Lithium Alloy by Rotary Swaging

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