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Year 2010 No 4

K. Stransky, F. Kavicka, B. Sekanina, J. Stetina, T. Mauder, L. Stransky
THE EFFECT OF ELECTROMAGNETIC STIRRING ON THE CRYSTALLIZATION OF CONCAST BILLETS
Keywords: steel billets|concast|crystallization|elektromagnetic stirring|
No 4 (2010), p. 216-222
  mag01.pdf (223 kB)
mag01_eng.txt (987 B)  

F. Dobeš
THE INFLUENCE OF HEAT-TREATMENT ON CREEP RESISTANCE OF Fe–Al ALLOYS WITH ADDITIONS OF NIOBIUM AND CARBON
Keywords: creep|high temperature deformation|intermetallics|iron aluminides|
No 4 (2010), p. 223-228
  mag02.pdf (106 kB)
mag02_eng.txt (489 B)  

S. Rusz, S. Tylšar, J. Kedroň, J.Dutkiewicz, T. Donič
ENHANCEMENT OF EFFICIENCY OF SPD PROCESS BY APPLICATION OF NEW GEOMETRY OF ECAP TOOL
Keywords: severe plastic deformation|hardness test|TEM|aluminium alloys|
No 4 (2010), p. 229-236
  mag03.pdf (565 kB)
mag03_eng.txt (870 B)  

Po-Chou Lin, Song-Jeng Huang, Pin-Sen Hong
FORMATION OF MAGNESIUM METAL MATRIX COMPOSITES Al2O3 P/AZ91D AND THEIR MECHANICAL PROPERTIES AFTER HEAT TREATMENT
Abstract
This research chose nano-scaled Al2O3 granular materials as the reinforcement particle and used the modified disintegrated melt deposition (DMD) technique to integrate the particle Al2O3 p with AZ91D as the magnesium metal matrix composites (Mg MMCs). Subsequently, the melt soup was formed with rapid stirring, and the different heat treatment processes were used to improve the mechanical properties of the composites. With increase of the weight percentage of the particles added into AZ91D, the hardness was increased. But the hardness of the composite added with the particle is declined moderately under the process of air cooling and water cooling. With room temperature cooling condition, the ultimate tensile strength (UTS) of present Al2O3 p/AZ91D MMCs is 189.55 MPa. With the water cooling condition, UTS of present MMCs increases to 191.86 MPa. However, with the air cooling condition, UTS of present MMCs increases up to 271.86 MPa. After T6 heat treatment, the hardness of 1wt.% Al2O3 p added MMCs is improved to 78.94 HV due to the aging effect and its UTS is 254.63 MPa under the condition of the 32hr aging treatment.

Keywords: metal-matrix composites|magnesium alloy|nano-scaled aluminum oxide pellet|heat treatment|
No 4 (2010), p. 237-245
  mag04.pdf (321 kB)
mag04_eng.txt (1 kB)  

Song-Jeng Huang, Zhong-Wei Chen
MICROSTRUCTURE OF AlN PARTICLES REINFORCED AZ91D Mg-BASED METAL-MATRIX COMPOSITES
Keywords: metal-matrix composites|homogenization|eutectic solidification|
No 4 (2010), p. 246-253
  mag05.pdf (881 kB)
mag05_eng.txt (824 B)  

J. Przondziono, W.Walke, E. Hadasik, B. Jasiński
ELECTROCHEMICAL CORROSION OF MAGNESIUM ALLOY AZ31 IN NaCl SOLUTIONS
Keywords: magnesium alloy AZ31|electrochemical corrosion|potentiodynamic tests|anodic polarisation curves|
No 4 (2010), p. 254-260
  mag06.pdf (154 kB)
mag06_eng.txt (756 B)  

E. Hadasik, D. Kuc
DEFORMATION MODE IN AZ31 MAGNESIUM ALLOY DURING COMPRESSION TESTS
Keywords: magnesium alloy|high temperature deformation|dynamic recrystallization|slip|twinning|
No 4 (2010), p. 261-267
  mag07.pdf (299 kB)
mag07_eng.txt (828 B)  

T. Kvačkaj, J. Bacsó, J. Bidulská, M. Lupták, I. Pokorný, M. Kvačkaj, M. Vlado
INFLUENCE OF CRYO AND CLASSIC ROLLING CONDITIONS ON PROCCESING PARAMETERS OF C-Si STEEL
Keywords: C-Si steel|cryo rolling|rolling force|normal rolling pressure|statistical method|
No 4 (2010), p. 268-276
  mag08.pdf (130 kB)
mag08_eng.txt (807 B)