A Novel Criterion for Assessing the Processability of Semi-Solid Alloys: The Enthalpy Sensitivity of Liquid Fraction

16 Pages Posted: 15 May 2019

See all articles by X.G. Hu

X.G. Hu

Southern University of Science and Technology - Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials

Z.H. Hu

SUSTech-Silverbasis Joint Lab of Manufacturing Engineering

X.W. Li

Southern University of Science and Technology - Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials

H. Ding

Southeast University - School of Materials Science and Engineering

Z. Li

Southern University of Science and Technology - Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials

Y. Zhou

Southern University of Science and Technology - Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials

S.P. Midson

Colorado School of Mines

Qiang Zhu

Southern University of Science and Technology - Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials

Date Written: May 13, 2019

Abstract

The enthalpy sensitivity of liquid fraction has been proposed as a novel criterion for assessing the semi-solid processability. Via experimental analysis and thermodynamic prediction, the enthalpy sensitivity turns out to be more reasonable than previous criterions. Based on criterion of enthalpy sensitivity, the effects of elements Si and Cu on semi-solid aluminium processability were analysed, indicating the approach to develop new alloys. Furthermore, the influences of heat exchange rate on semi-solid processability were investigated. It is suggested that increasing heat exchange rate would benefit the processability but with a sacrifice of the process time window in practice.

Keywords: Semi-solid processing, processability, thermodynamics, kinetic solidification

Suggested Citation

Hu, X.G. and Hu, Z.H. and Li, X.W. and Ding, H. and Li, Z. and Zhou, Y. and Midson, S.P. and Zhu, Qiang, A Novel Criterion for Assessing the Processability of Semi-Solid Alloys: The Enthalpy Sensitivity of Liquid Fraction (May 13, 2019). Available at SSRN: https://ssrn.com/abstract=3387639

X.G. Hu

Southern University of Science and Technology - Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials

No 1088, xueyuan Rd.
Xili, Nanshan District
Shenzhen, Guangdong 518055
China

Z.H. Hu

SUSTech-Silverbasis Joint Lab of Manufacturing Engineering

Shenzhen, 518055
China

X.W. Li

Southern University of Science and Technology - Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials

No 1088, xueyuan Rd.
Xili, Nanshan District
Shenzhen, Guangdong 518055
China

H. Ding

Southeast University - School of Materials Science and Engineering

Sipailou 2
Nanjing, Jiangsu Province 210096
China

Z. Li

Southern University of Science and Technology - Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials

No 1088, xueyuan Rd.
Xili, Nanshan District
Shenzhen, Guangdong 518055
China

Y. Zhou

Southern University of Science and Technology - Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials

No 1088, xueyuan Rd.
Xili, Nanshan District
Shenzhen, Guangdong 518055
China

S.P. Midson

Colorado School of Mines

Golden, CO 80401
United States

Qiang Zhu (Contact Author)

Southern University of Science and Technology - Shenzhen Key Laboratory for Additive Manufacturing of High-Performance Materials ( email )

No 1088, xueyuan Rd.
Xili, Nanshan District
Shenzhen, Guangdong 518055
China

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