Influence of secondary cooling strategies on thermal gradients in the direct chill casting of magnesium alloys

Divya, P. V. Sai; Penumakala, Pavan Kumar; Nallathambi, Ashok Kumar

doi:10.1007/s10973-020-10235-7

Cited by 4 publications

(3 citation statements)

References 23 publications

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“…thermal conductivity (K), specific heat (C p ), density were taken from previous work. 8 Mechanical properties such as elastic modulus (E) and coefficient of thermal expansion (α) were considered to be temperature dependent and their variation is shown in Figure 18.…”

Section: Application Of Materials Modelsmentioning

confidence: 99%

“…Due to excellent castability, magnesium alloys are cast into rolling ingots and extrusion billets using Direct Chill Casting (DCC). 8 High Pressure Die Casting is widely used for manufacturing products for structural applications. 1,8 Residual stresses and distortion of cast products which occurs during and after the manufacturing process significantly influence the quality and performance of the product.…”

Section: Introductionmentioning

confidence: 99%

“…8 High Pressure Die Casting is widely used for manufacturing products for structural applications. 1,8 Residual stresses and distortion of cast products which occurs during and after the manufacturing process significantly influence the quality and performance of the product. Few works focused on estimating the evolution of temperature and subsequent thermal stress profiles using Finite Element (FE) based numerical techniques.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of hot tensile behaviour and prediction of thermal stresses during processing of AZ31 magnesium alloy

Divya

Penumakala

Kalyan

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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The use of magnesium alloys is rapidly increasing in automotive and aerospace industries. Accurate constitutive modelling of material at high temperature is a key input for numerical simulation of manufacturing processes. In the present work, hot tensile deformation behaviour of AZ31 alloy was studied by performing uniaxial tensile tests in the temperature range of 250°C–450°C and strain rates ranging from 0.1 to 0.001 s−1. The flow stress behaviour of AZ31 alloy was modelled using two rate-dependent inelastic models, viz. Garafalo law and extended Ludwik law. Various constants in these models were predicted as a function of strain rate and temperature. These rate dependent laws were integrated using Finite Element (FE) based algorithms for thermo-mechanical simulation. Evolution of thermal stresses in solid state quenching and static casting of AZ31 alloys were studied. Results reveal that both material models accurately predict the evolution of thermal stresses for high temperature quenching and casting processes.

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Section: Application Of Materials Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of hot tensile behaviour and prediction of thermal stresses during processing of AZ31 magnesium alloy

Divya

Penumakala

Kalyan

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Calorimetric analysis of Mg–Li ultra light magnesium alloy

Król

Hajnyš

2023

J Therm Anal Calorim

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The Thermal-Derivative Analysis, or Computer-Aided Cooling Curve Analysis, is a commonly used method for determining the solidification parameters of metals and alloys. Knowledge of the enthalpy, kinetics and broad characteristics of the transformations taking place during the cooling of an alloy can be obtained with the proper configuration of analytical equipment and arrangement of test techniques. This work practically analyses the changes occurring in the Mg–4.5Li–1.5Al alloy as a result of the modification of the structure by the addition of TiB and Sr. The results indicate that adding grain refinements significantly affects the microstructure and thermal parameters of Mg–4.5Li–1.5Al alloy. The nucleation temperature and solidus temperature decrease with the addition of chemical reagents. Compressive strength improved due to the refinement of grain size. The results confirmed that thermal-derivative analysis is suitable for analysing changes in cast magnesium alloys.

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The Effect of Water Ejection and Rewetting Phenomena on Hot Cracking Sensitivity during Direct Chill Casting of Magnesium Alloy

Putta

Penumakala

Nallathambi

2022

J. of Materi Eng and Perform

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Influence of secondary cooling strategies on thermal gradients in the direct chill casting of magnesium alloys

Cited by 4 publications

References 23 publications

Analysis of hot tensile behaviour and prediction of thermal stresses during processing of AZ31 magnesium alloy

Analysis of hot tensile behaviour and prediction of thermal stresses during processing of AZ31 magnesium alloy

Calorimetric analysis of Mg–Li ultra light magnesium alloy

The Effect of Water Ejection and Rewetting Phenomena on Hot Cracking Sensitivity during Direct Chill Casting of Magnesium Alloy

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