Apparent Viscosity and Structure in Partially Solidified Al-Cu Alloys

Elemental separation in nanocrystalline Cu-Al alloys

Y. B. Wang, X. Z. Liao, Y. H. Zhao, J. C. Cooley, Z. Horita, and Y. T. Zhu School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China Division of Materials Science and Technology, Los Alamos National Laboratory, Los Alamos, New ...

Growth directions in directionally solidified Al–Zn and Zn–Al alloys near eutectic composition

Growth directions and crystallographic orientations of solidification microstructures have been measured in Al–Zn alloy near the eutectic composition. Al dendrites in Al–92 wt.% Zn alloy were found to grow along the h110i directions while Zn dendrites in Al– 96 and 98 wt.% Zn have h10 10i trunks. In the lamellar eutectic, a crystallographic relationship has been found between the dense plane of...

Magnetoelasticity and Magnetoresistance in Cu–Al–Mn Shape-Memory Alloys

This paper is aimed at studying the effect of a magnetic field on the martensitic transition of a Cu–Al–Mn shape-memory alloy. The martensitic transition has been studied through resistance measurements under applied magnetic fields ranging from 0 to 50 kOe. Negative magnetoresistance showing an almost linear dependence with the square of the magnetization has been observed. This magnetoresisti...

MICROSTRUCURE AND STRENGTHENING OF Al-Li-Cu-Mg ALLOYS

A detailed quantitative model for the strengthening of monolithic alloys and composites due to precipitation strengthening, solution strengthening, grain and subgrain strengthening, strengthening by dislocations and load transfer to ceramic inclusions is presented. The model includes a newly derived description of the effect of a precipitate free zone (PFZ) around the reinforcing phase incorpor...

Icosahedral phase stabilities in Al-Cu-Ru alloys.