Effect of heat-treatment on microstructure, mechanical and tribological properties of Mg-Li-Al based alloy

Maurya, Rita; Mittal, Dhruv; Balani, Kantesh

doi:10.1016/j.jmrt.2020.02.101

Cited by 31 publications

(3 citation statements)

References 24 publications

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“…Recently, OOF2 was used to obtain the stress distribution and Young's modulus in the thermally treated Mg-9 wt.%Li-7 wt.%Al-1 wt.%Sn alloy to enhance the wear resistance [24][25][26]. Further, continuously reinforced concrete pavement α correlation with spalling, performance and mechanical behavior is also studied with OOF2 and results are compared with commercial FE software [27].…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical Analysis of Ceramic Composites Using Object Oriented Finite Element Analysis

Patel¹

2022

Simulation Modeling

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This chapter discussed the object oriented finite element (OOF2)-based studies for ceramic composites. OOF2 is an effective method that uses an actual microstructure image of the material/composites for simulation. The effect of filler inclusions on the thermomechanical properties (coefficient of thermal expansion, thermal conductivity, Young’s modulus, stress and strain) is discussed. For this purpose, various ceramics composites (thermal barrier coating and ferroelectric based) are considered at homogeneous and heterogeneous temperature/stress conditions. The maximum stress is found at the interface of the filler/matrix due to their mismatch of thermal expansion coefficient. Further, residual and localized interface stress distributions are evaluated to analyze the composite’s failure behavior. The possible integration of OOF2 with other simulation techniques is also explored.

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Section: Introductionmentioning

confidence: 99%

Thermomechanical Analysis of Ceramic Composites Using Object Oriented Finite Element Analysis

Patel¹

2022

Simulation Modeling

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“…Although traditional magnesium alloys have the characteristics of low density, high specific strength, and specific stiffness, their application in aerospace and other fields is limited due to their poor high-temperature stability [ 1 , 2 ]. The related studies have indicated that the addition of rare-earth elements (such as Ce, Nd, Gd, and La) to magnesium alloys not only significantly improves the high-temperature properties and refines the dendritic structure of the as-cast alloy [ 3 , 4 ] but also weakens the basal texture and the corresponding anisotropy [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

The Microstructural Evolution and Grain Growth Kinetics of Fine-Grained Extruded Mg-Nd-Zn-Zr Alloy

Jiao

Zhan³

et al. 2022

Materials

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The microstructure evolution and grain growth kinetics of the fine-grained extruded Mg-Nd-Zn-Zr alloy were investigated by holding the extruded plate for a wide range of time in the temperature range of 470 °C to 530 °C. By observing the optical micrographs, it was found that the material showed abnormal grain growth at the experimental condition of 470 °C × 24 h, and the time point of abnormal grain growth appeared significantly earlier with the increase in the experimental temperature. The evaluation of the second phase content within the alloy indicates that the presence of the second phase contributes to the microstructural stability of the Mg-Nd-Zn-Zr alloy. However, the slow coarsening/dissolution of the second phase is an important cause of abnormal grain growth. Based on the experimental data, the isothermal grain growth kinetic models of the fine-grained extruded Mg-Nd-Zn-Zr alloy were developed based on the Sellars model. The grain growth exponent was in the range of 5.5–8 and decreased gradually with the increase in the experimental temperature. The grain growth activation energy is approximately 150.00 kJ/mol, which is close to the bulk diffusion activation energy of magnesium, indicating that the grain growth is controlled by lattice diffusion. By energy spectrometry (EDS), the compositional changes of the second phase within this alloy at 500 °C were investigated.

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“…As it is well known, Mg-Li alloys have attracted great interest in the fields of aerospace, military and 3C industries because of their promising properties such as high specific modulus, low density, excellent formability and electromagnetic shielding [1][2][3][4][5][6]. Meanwhile, the phase structure and mechanical properties of Mg-Li alloys will change with the difference of lithium content.…”

Section: Introductionmentioning

confidence: 99%

Dual-Layer Corrosion-Resistant Conversion Coatings on Mg-9Li Alloy via Hydrothermal Synthesis in Deionized Water

Song

Lian

et al. 2021

Metals

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The formation of a corrosion-resistant coating by the hydrothermal method is an effective way to provide significant protection to magnesium alloys. However, it is a challenge to prepare such a coating on magnesium-lithium alloys because of its high chemical activity. Herein, the dual-layer structured corrosion-resistant conversion coating composed with Mg(OH)2 and LiOH was successfully synthesized on Mg-9Li alloy by the optimization of the hydrothermal reaction in deionized water. The coating synthesized at 140 °C for 2 h has the best anti-corrosion performance in all obtained coatings, which has a uniform and compact coating with thickness of about 3 μm. The improvement of the hydrophobicity due to the stacking structure of the surface layer, as well as the barrier effect of its inner compact coating on corrosive media, lead to the excellent anti-corrosion performance of the obtained hydrothermal conversion coating

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Effect of heat-treatment on microstructure, mechanical and tribological properties of Mg-Li-Al based alloy

Cited by 31 publications

References 24 publications

Thermomechanical Analysis of Ceramic Composites Using Object Oriented Finite Element Analysis

Thermomechanical Analysis of Ceramic Composites Using Object Oriented Finite Element Analysis

The Microstructural Evolution and Grain Growth Kinetics of Fine-Grained Extruded Mg-Nd-Zn-Zr Alloy

Dual-Layer Corrosion-Resistant Conversion Coatings on Mg-9Li Alloy via Hydrothermal Synthesis in Deionized Water

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