Investigation of Maximum Stresses According to the ( hkl ) Layers at Stable Condition for AlSc Alloys

Received/Geliş: 30.10.2018 Accepted/Kabul: 18.01.2019 Abstract: Al-Sc alloys are used in the industry due to the various properties. There is an interest of researcher for theoretical and experimental study for this alloy. The Importance of this alloy is that the effect of small concentration addition of Scandium has a great effect on the chemical and physical properties of alloys. In this study Al-1,1Sc and Al-1,9Sc alloys are studied experimentally and theoretically. Produced alloys are investigated by XRD analysis that results showed that the alloys have fcc crystal structure. The experimental results are used to calculate many elastic properties of the alloys by a software (EMTO). By using the experimental data, peak wideness, crystal size, dislocation density, Young’s constant and maximum stresses on (hkl) layers are determined and discussed. According to the results of this study, it is observed that the parameters depend on the related crystal layers and Al-1,1Sc alloy has better mechanical properties than Al1,9Sc alloy.

[1]  M. Peng,et al.  Ab-initio investigations on elastic properties in L12 structure Al3Sc and Al3Y under high pressure , 2014 .

[2]  Y. Liu,et al.  Mechanical and thermodynamic properties of Al3Sc and Al3Li precipitates in Al-Li-Sc alloys from first-principles calculations , 2013 .

[3]  R. Ünal,et al.  Experimental and first-principles investigation of crystal structure of powder metallurgy Al–1.1Sc and Al–2Sc alloys , 2013 .

[4]  Shuo Jin,et al.  Ab initio investigation of the mechanical properties of copper , 2012 .

[5]  D. Seidman,et al.  Effects of Ti additions on the nanostructure and creep properties of precipitation-strengthened Al-Sc alloys , 2005 .

[6]  J. Røyset,et al.  Some comments on the misfit and coherency loss of Al3Sc particles in Al–Sc alloys , 2005 .

[7]  J. Røyset,et al.  Scandium in aluminium alloys , 2005 .

[8]  F. J. Humphreys,et al.  Interaction of recrystallization and precipitation: The effect of Al3Sc on the recrystallization behaviour of deformed aluminium , 2003 .

[9]  T. Langdon,et al.  Influence of scandium and zirconium on grain stability and superplastic ductilities in ultrafine-grained Al-Mg alloys , 2002 .

[10]  E. Nembach.  Order strengthening : recent developments, with special reference to aluminium-lithium-alloys , 2000 .

[11]  R. Valiev,et al.  Bulk nanostructured materials from severe plastic deformation , 2000 .

[12]  S. Chantasiriwan,et al.  Theoretical study of the response of 12 cubic metals to uniaxial loading , 1998 .

[13]  J. Murray.  The Al-Sc (aluminum-scandium) system , 1998 .

[14]  A. Quong,et al.  First-principles calculations of bulk and interfacial thermodynamic properties for fcc-based Al-Sc alloys , 1998 .

[15]  Patrick B. Berbon,et al.  OBSERVATIONS OF HIGH STRAIN RATE SUPERPLASTICITY IN COMMERCIAL ALUMINUM ALLOYS WITH ULTRAFINE GRAIN SIZES , 1997 .

[16]  R. Hyland.  Homogeneous nucleation kinetics of Al3Sc in a dilute Al-Sc alloy , 1992 .

[17]  R. Hill,et al.  Theory of the response of cubic crystals to [111] loading , 1980 .

[18]  A. Taylor,et al.  Constitution and magnetic properties of iron-rich iron-aluminum alloys , 1958 .

[19]  Wang Zhu-tang.  Aluminum scandium alloy , 2013 .

[20]  R. Roumina.  Mechanical properties of a recovered Al-Mg-Sc alloy , 2009 .

[21]  W. Boas,et al.  Plasticity of Crystals With Special Reference to Metals , 1950 .