Hot Deformation and Processing Map of Pb-Mg-10Al-1B Alloy

• Published in: Journal of materials engineering and performance Vol. 22; no. 10; pp. 3049 - 3054
• Main Author: Duan, Y. H.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.10.2013; Springer
• Subjects: Applied sciences; Characterization and Evaluation of Materials; Chemistry and Materials Science; Corrosion and Coatings; Elasticity. Plasticity; Engineering Design; Exact sciences and technology; Materials Science; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; Quality Control; Reliability; Safety and Risk; Tribology; hot compression; processing map; constitutive relationship; Pb-Mg-10Al-1B alloy; Hot deformation; Constitutive equation; Plastic flow; Temperature effect; Compression test; Lead alloy; Hyperbolic equation; Microstructure; True stress true strain curve; Activation energy; Zener Hollomon parameter; Flow stress; Strain rate
• ISSN: 1059-9495; 1544-1024
• DOI: 10.1007/s11665-013-0604-1

The hot deformation behavior of the novel Pb-Mg-10Al-1B alloy has been investigated by hot compressive tests in the temperature range from 453 to 613 K within the strain rate range of 0.01-1 s −1 using a Gleeble-1500 thermal simulator testing machine. The results show that the flow stress increases with increasing strain rate and decreasing temperature. The hot deformation behavior can be described by a constitutive equation with hyperbolic sine function or Zener-Hollomon parameter. The hot deformation activation energy of Pb-Mg-10Al-1B alloy is 151.2543 kJ/mol. The processing map at the strain of 0.4 exhibits an instable deformation domain of 460-520 K at 0.06-1 s −1 . According to the processing map, the optimum hot-working conditions for Pb-Mg-Al-B alloy are 573 K and 0.01 s −1 .