Depth profile reconstruction of the thermal conductivity of inhomogeneous solids: application to laser-hardened Al alloys

2000 ◽  
Vol 71 (3) ◽  
pp. 319-323 ◽  
Author(s):  
Y.Z. Zhao ◽  
S.Y. Zhang ◽  
J.C. Cheng ◽  
Y.K. Zhang ◽  
W.H. Xu
Keyword(s):  
Thermal Conductivity ◽  
Depth Profile ◽  
Al Alloys ◽  
Profile Reconstruction

scholarly journals 3D Depth Profile Reconstruction of Segregated Impurities using Secondary Ion Mass Spectrometry

10.3791/61065 ◽  
2020 ◽  
Author(s):  
Paweł Piotr Michałowski ◽  
Sebastian Zlotnik ◽  
Iwona Jóźwik ◽  
Adrianna Chamryga ◽  
Mariusz Rudziński
Keyword(s):  
Mass Spectrometry ◽  
Depth Profile ◽  
Secondary Ion Mass Spectrometry ◽  
Ion Mass Spectrometry ◽  
Profile Reconstruction ◽  
Secondary Ion

The Influence of Rare Earth, Strontium and Calcium on the Thermal Diffusivity of Mg-Al Alloys

2011 ◽  
Vol 312-315 ◽  
pp. 824-829 ◽  
Author(s):  
Tomasz Rzychoń ◽  
Andrzej Kiełbus
Keyword(s):  
Thermal Conductivity ◽  
Solid Solution ◽  
Rare Earth ◽  
Thermal Diffusivity ◽  
Magnesium Alloy ◽  
Aluminum Content ◽  
Volume Fraction ◽  
Al Alloys ◽  
Mg17al12 Phase ◽  
Increasing Temperature

The microstructure and thermal diffusivity of as-cast AM60, AE63, AJ63 and AXJ620 alloys were investigated over the temperature range 20–300°C. The microstructure of as-cast AM60 magnesium alloy consists of dendrites of α-Mg solid solution and divorced eutectic containing “islands” of α-Mg and Mg17Al12 phase. In regions adjacent with divorced eutectic, the supersaturation aluminum solute in the α-Mg matrix is observed. The addition of rare earth, calcium and strontium caused the decrease of the volume fraction of Mg17Al12 compound and aluminum content in α-Mg solid solution. Moreover, the intermetallic compounds such as: Al11RE3, Al4Sr, Al3Mg13Sr, Al2Ca are observed in the interdendritic regions. The thermal diffusivity of AM60 magnesium alloy increases with increasing temperature up to 150°C, above this temperature the increase is less marked. The change in the slope of the temperature variation of the thermal diffusivity is caused by a precipitation of Mg17Al12 phase in the supersaturation of α-Mg areas neighboring the divorced eutectic α-Mg+Mg17Al12. The addition of rare earth, calcium and strontium caused the increase of the thermal diffusivity and thermal conductivity due to the decreasing of aluminum content in α-Mg matrix.

Variations of thermal conductivity with temperature and composition of Zn in the Bi–[x]at.% Zn–2at.% Al alloys

2012 ◽  
Vol 547 ◽  
pp. 1-5 ◽  
Author(s):  
S. Aksöz ◽  
N. Maraşlı ◽  
K. Keşlioğlu ◽  
F. Yıldız
Keyword(s):  
Thermal Conductivity ◽  
Al Alloys
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