Strengthening mechanisms, deformation behavior, and anisotropic mechanical properties of Al-Li alloys: A review

Abstract

Graphical abstract

A first-principles study on the site occupancy behavior of transition metals in L12-Al3Li phase

“…The 1NN displacement is negative when the atomic radius of impurity is smaller than that of host atom (Al or Li), meaning that adding alloying elements is a potential way for controlling and designing the lattice mismatch between the precipitate Al 3 Li and matrix Al, which could be considered to increase the mechanical properties, eg. the strength of the Al-Al 3 Li interface in alloys [4,47].…”

“…Al-Li alloys are mainly used for aerospace industry due to the light weight and high strength. It has been known that the strengthening mechanism of Al-Li alloys is associated with the precipitation of the metastable ordered δ'-Al 3 Li phase, which has a L1 2 structure and forms as coherent spherical particles from the Al matrix [1][2][3][4][5][6]. It has been confirmed that δ'-Al 3 Li phase has a large intrinsic modulus, which could be the main reason of high elastic modulus in Al-Li alloys [7][8][9].…”

“…Particularly, Tian et al [26] have studied the site preference of a list of alloying elements (8 elements) in L1 2 Al 3 Li by using first-principles calculations, they have used the enthalpy of formation of alloyed L1 2 Al 3 Li to predict the 0K site preference of solute. In fact, most of the 3d, 4d, and 5d elements are used in Al-Li based alloys as alloying solutes [4] in Al-Li alloys. Therefore, the knowledge of the intrinsic defect and alloys formation enthalpies as well as site preference of the alloying elements of transition metals can be used to evaluate the role of the selected elements on the thermodynamic and mechanical properties of Al-Li alloys.…”

Preparation of Crown‐Ether‐Functionalized Polysulfone Membrane by In Situ Surface Grafting for Selective Adsorption and Separation of Li+

“…Lithium as the lightest metal has been widely used in lithium batteries, pharmaceuticals, ceramics and alloy industry as a critical resource. The broad application of lithium products stimulated the growing demand for lithium dramatically.…”

Effect of pre-deformation and artificial aging on fatigue life of 2198 Al-Li alloy

“…The aluminum-lithium alloys have attractive applications in the aerospace industry owing to their lower density, better strength and higher stiffness comparing to the conventionally commercial 2xxx and 7xxx series aluminum alloys [1][2][3][4][5][6][7][8]. However, insufficient plasticity, toughness and obvious anisotropy prevent their universal uptake [9].…”