Age Hardening Behavior of Al-Li Alloys Produced by Sand Mold Process

Seiji Saikawa; Chiharu Otsubo; Susumu Ikeno; Koichi Komai

doi:10.4028/www.scientific.net/MSF.879.1629

Paper Titles

A New Approach for the Spectroscopic Detection of Different pH-Values
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Influence of Long Heat Treatments on Hardness and Tribological Behaviour of HVOF Sprayed WC-CoCr and Cr₃C₂-25NiCr Coatings
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Hot Deformation Behavior and Stability Criteria of WE54 Magnesium Alloy
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Development of a 2.25%Cr Steel P23 Reinforced with Micro/Nano-Carbide Particles Produced by Self-Propagating High-Temperature Synthesis
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Age Hardening Behavior of Al-Li Alloys Produced by Sand Mold Process
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Effect of Silicide on Dynamic Recrystallization in Near Alpha Titanium Alloy
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Manufacturing of ODS RAFM Steel: Mechanical and Microstructural Characterization
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Shape Recovery of Polymeric Matrix Composites by Irradiation
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Comparison of Microstructure and Mechanical Behavior of the Ferritic Stainless Steels ASTM 430 Stabilized with Niobium and ASTM 439 Stabilized with Niobium and Titanium
p.1651

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Age Hardening Behavior of Al-Li Alloys Produced by Sand Mold Process

Abstract:

Al-Li alloys have higher mechanical properties and more lightweight than other conventional aluminum alloys. Therefore , it is focused as a good material for weight reduction of industrial fields. However, since the Al-Li alloy are highly active and hard to cast, there has been limited research on casting. In this study, age-hardening behavior of Al-2.5mass%Li alloys cast into sand and metal mold were investigated. All alloys cast into Y-block shape sand mold, and then artificial aged after solution treated at 743K for 36ks. Because of difference in quantity of precipitation by metastable δ’(Al₃Li) phase, peak hardness of metal mold casting is higher than that of sand molds castings.