The Influence of Addition of the Rare Earth Elements on the Structure and Hardness of AlZn12Mg3.5Cu2.5 Alloy

Rafał Michalik; Tomasz Mikuszewski

doi:10.4028/www.scientific.net/SSP.226.39

Paper Titles

The Origin of the Ferroelectricity in the Bismuth Titanate Bi₄Ti₃O₁₂with Perovskite-Like Layered Structure
p.17

Thermal Stability of Ti-6Al-4V Alloy with Carbon Content
p.23

Biomechanical Analysis of Selected Endoprostheses of Hip Joint by Means of Finite Element Methods
p.29

Effect of Heat Treatment on the Microstructure and Mechanical Properties of Sintered Stainless Tool Steel
p.33

The Influence of Addition of the Rare Earth Elements on the Structure and Hardness of AlZn12Mg3.5Cu2.5 Alloy
p.39

Effect of Autogenous Laser Weld on Microstructure and Mechanical Properties of Inconel 617 Nickel Alloy
p.43

Strength–Energy and Structural Effects of Dynamic Deformation of Aluminum Alloy
p.49

Influence of the Materials Combination for the Surface Temperature of the Bimetallic Wire Deformed in the Cold Drawing Process
p.53

Preparation of SiC_w-ZTA Composites by Two-Step Sintering or Spark Plasma Sintering
p.59

HomeSolid State PhenomenaSolid State Phenomena Vol. 226The Influence of Addition of the Rare Earth...

The Influence of Addition of the Rare Earth Elements on the Structure and Hardness of AlZn12Mg3.5Cu2.5 Alloy

Abstract:

Aluminium alloys are characterized by a number of advantageous properties , which include: low density ,high relative strength , high electrical and thermal conductivity , ease of machining and good dumping features. Particular interesting are high-strength aluminum alloys of zinc, magnesium and copper. These alloys are used mainly in aircraft, building &structure, electrical, electrical power and automotive industry. A significant problem associated with the use of high-strength aluminium-zinc alloys is their insufficient resistance to corrosion. Improvement of corrosion resistance can be obtained by application of alloy micro-additives. The article shows results of examinations related to influence of rare earth additive on the structure and hardness of AlZn12Mg3.5Cu2.5 alloy. The scope of examination included: structure testing using scanning microscope, X – ray microanalysis, hardness test. Examinations have shown higher hardness of samples with rare earth additives. Was found , that rare earth addition influences on more fine –grained structure of the AlZn12Mg3.5Cu2.5 alloy.