Microstructures and Mechanical Behavior of Processed Mg-Li-Zn Alloy

Wang, Jian Yih; Hong, Wei; Hsu, Ping-Chi; Hsu, Chang Chun; Lee, Shyong

doi:10.4028/www.scientific.net/msf.419-422.165

Cited by 28 publications

(18 citation statements)

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“…Recently, some articles have studied the mechanical properties of MgLi alloys, including the effects of cold working, addition of alloying elements and precipitation hardening. [7][8][9][10] Hsu et al have also investigated the natural aging of Mg-Li-Al-Zn alloy.…”

Section: Introductionmentioning

confidence: 99%

A Study of Aging Treatment on the Mg-10Li-0.5Zn Alloy

Wang

Lin

et al. 2009

Mater. Trans.

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In this study, an aging treatment was performed to investigate the microstructures and mechanical properties of Mg-10Li-0.5Zn (LZ101) alloy. Experimental results show that the LZ101 Mg-Li alloy exhibits a dual-phase microstructure of (HCP) and (BCC) phases, and has a good ductility. The 723 K solid-solution treated LZ101 Mg-Li alloy exhibits a single structure and produces precipitates after natural and artificial aging. The solid-solution treated specimen has lower mechanical strength and higher elongation than the as-extruded one. The aged specimens exhibit a typical behaviour of precipitation hardening. The maximum tensile strength can reach 188 MPa, 180 MPa and 173 MPa, corresponding to the natural aging of 345.6 ks, 423 K aging of 21.6 ks and 523 K aging of 10.8 ks.

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Section: Introductionmentioning

confidence: 99%

A Study of Aging Treatment on the Mg-10Li-0.5Zn Alloy

Wang

Lin

et al. 2009

Mater. Trans.

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“…With another advantage of being recyclable, Mg alloy is welcome 1,2) considering environmental appeal. However, general Mg alloys possess poor formability because of their hexagonal close packed structure.…”

Section: Introductionmentioning

confidence: 99%

Room Temperature Aging Characteristic of MgLiAlZn Alloy

2008

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Making alloys of Mg and Li is quite a task as their individual melting temperatures are vastly different. However, it is thought paid off considering their extreme lightness. Basically, low melting temperature Li could cause Mg-Li alloys' microstructures change at room temperature (R.T.). Recrystallization and aging of Li-rich solid solution phase () can proceed under R.T. Previously, R.T. aging phenomenon was mentioned without in-depth analysis. This paper fills up the blank by working on Mg-11.2%Li-0.95%Al-0.43%Zn (mass%), mainly due to the TEM work brought in. With this apparatus for analysis, a transition precipitate (tentatively called pre-phase) is revealed. This preprecipitation is responsible for the distinctive strengthening in the initial stage of R.T. aging. However, it is unstable and subsequently transforms to or phase. Both of these later precipitates are little effective in producing aging strengthening.

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“…Alloying magnesium with lithium, which has extremely low density (5:34 Â 10 À4 kg/m 3 ), can further reduce the weight of magnesium alloy, and mix the hcp structure with bcc phase. [1][2][3] Early in the sixties, NASA had developed a series of magnesium-lithium-aluminum alloys, LA141 (14 mass%Li-1 mass%Al magnesium alloy) for example, for possible applications. However, inadequate corrosion ability of these alloys has deterred their progress.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Corrosion Resistance of Anodized Mg-9 mass%Li-1 mass%Zn Alloy

Wang

Liu²,

Chen³

et al. 2008

Mater. Trans.

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This research used pulse and direct current methods to perform surface anodizing treatment of Mg-9 mass%Li-1 mass%Zn alloy (LZ91). The anodic films were analyzed with electrochemical impedance spectroscopy (EIS) for corrosion resistance. The impedance measurements show that the resistance value of anodic films made by pulse current to be 100 K at 2 Â 10 À2 A/m 2 and those made by direct current anodic films to be 65 K at 2 Â 10 À2 A/m 2 . It reveals that pulse current makes better anodic films than direct current. There were two layers in the anodic films that were verified from the EIS phase angle diagram in which three time constants existed. The structure of the film was analyzed by a FE-SEM, and the microstructure observation showed that the anodic film consists of porous and barrier layers.

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Microstructures and Mechanical Behavior of Processed Mg-Li-Zn Alloy

Cited by 28 publications

References 0 publications

A Study of Aging Treatment on the Mg-10Li-0.5Zn Alloy

A Study of Aging Treatment on the Mg-10Li-0.5Zn Alloy

Room Temperature Aging Characteristic of MgLiAlZn Alloy

Microstructure and Corrosion Resistance of Anodized Mg-9 mass%Li-1 mass%Zn Alloy

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