Viscosity estimation of semi-solid alloys based on thermal simulation compression tests
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Jiaojiao Wang
Abstract
In this paper, according to the thermal simulation compression test data, relationships for flow stress, temperature, strain rate and strain of semi-solid ZL201 alloy were studied through multiple regressions, and the constitutive equation of the alloy was established. The relationship between apparent viscosity and the shear rate was also researched. The results indicated that the maximum stress increased as strain rates increased at a constant temperature. The peak stress was clearly affected by deformation temperature, strain rate and strain. The plateau stress showed the same characteristics as the peak stress. In general, it increased slightly with increasing of the deformation temperature, except at high strain rates. The relationship between apparent viscosity and the shear rate was in accordance with the power law. The results provided a technological reference for the study of semi-solid die-casting numerical simulation of semi-solid ZL201 alloy parts. The viscosity of other semi-solid alloys could be calculated, as in the case of viscosity estimation of semi-solid ZL201 alloy.
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© 2014, Carl Hanser Verlag, München
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Articles in the same Issue
- Contents
- Contents
- Original Contributions
- The thermodynamics of boron extraction from liquid silicon using SiO2–CaO–MgO slag treatment
- Viscosity estimation of semi-solid alloys based on thermal simulation compression tests
- Original Contributions
- Experimental study of phase equilibria in the “SnO”–CaO–SiO2 system in equilibrium with tin metal
- Prediction of the solidification path of Al-4.37Cu-27.02Mg ternary eutectic alloy with a unified microsegregation model coupled with Thermo-Calc
- Evaluation of the effective diffusion coefficient of boron in the Fe2B phase in the presence of chemical stresses
- Morphology evolution of γ′ precipitates in GTD-111 Ni-based superalloy with heat treatment parameters
- Hot forming of a new steel used in stamping dies and tooling
- Mechanical properties and corrosion behaviour of freestanding, precipitate-free magnesium WE43 thin films
- Sliding wear performance of Fe-, Ni- and Co-based hardfacing alloys for PTA cladding
- The suitability of selected austenitic stainless steels and hastelloy C276 alloys as substrates for thin film deposition using spray pyrolysis
- Synthesis, structural, optical and thermal analysis of nanostructured ZnO
- Electrical conductivity variation of (Bi2Te3)0.25(Sb2Te3)0.75 crystal grown using the zone melting method
- X-ray Absorption Near Edge Structure Studies of Pb1-xMnxTe(In, Ga) Systems
- DGM News
- DGM News
- Grain refining of aluminium alloys and silicon by means of boron-nitride particles
