Effect of Homogenization Process on Hot Rolling of Aluminum-Lithium Alloys

Ali Shokuhfar; Arash Rezaei; S.M.M. Hadavi; Shahram Ahmadi; H. Azimi

doi:10.4028/www.scientific.net/DDF.258-260.20

Paper Titles

Pioneers and Landmarks of Diffusion
p.1

Effect of Solidification Rate and Composition on Segregation in Al-Li-Cu-Zr Alloys
p.15

Effect of Homogenization Process on Hot Rolling of Aluminum-Lithium Alloys
p.20

Carburizing of Low Carbon Steel with Plasma Electrolysis in Aqueous Solution
p.26

On the Atomistic Dynamic Modelling of Simultaneous Diffusion of Dopant and Point Defect (B, V, I) in Silicon Material
p.32

Microstructural Development of Electrical Steels under Si and Al Diffusion
p.39

Diffusion Study of Cerium and Gadolinium in Single- and Polycrystalline Yttria-Stabilized Zirconia
p.46

Theory of Interdiffusion in Solids
p.52

Experiments Proving the Mixed Control of the Reactive Diffusion System Zn/Fe₃Si with Clamp Press
p.59

HomeDefect and Diffusion ForumDefect and Diffusion Forum Vols. 258-260Effect of Homogenization Process on Hot Rolling of...

Effect of Homogenization Process on Hot Rolling of Aluminum-Lithium Alloys

Abstract:

Aluminum-Lithium alloys are attractive choices for weight saving of aerospace structures. By addition of Lithium to Aluminum alloys, the mechanical and physical properties are improved, density decreases up to 10% and module of elasticity increases up to 15%. As-cast Al-Li ingots include some continues brittle phases in grain boundaries that decrease formability by crack initiation during hot rolling. In the present work, influence of homogenization on hot rolling of Al- Li alloys was studied. Homogenization temperature determined based on DTA test and homogeneity properties were characterized by microstructures observation. One specimen was cast in conventional method and the other was cast by direct casting (DC) method. Homogenization was performed at four different times: 10, 24, 50 and 100 hours at 500°C also no cracking has been observed in both ingots in 100 hr and 24 hr at 500°C respectively due to eliminate the brittle phases.