Influence of Zr on intergranular corrosion of cast and cryorolled D16 aluminum alloy

INFLUENCE OF THE SELECTED STRUCTURAL PARAMETER ON A DEPTH OF INTERGRANULAR CORROSION OF Al-Si7-Mg0,3 ALUMINUM ALLOY

L. Bernat, Poznan University of Technology, Faculty of Mechanical Engineering and Management, Division of Foundry, Poznan, Poland The paper presents an influence of the Dendrite Arm Spacing (DAS) microstructure parameter on the intergranular corrosion of AlSi7Mg aluminum alloy. The samples were subjected to the corrosion process for: 2,5; 12; 24; 48 and 96 hours in NaCl + HCl + H2O solution. It...

The Correlation between Grain Boundary Character and Intergranular Corrosion Susceptibility of 2124 Aluminum Alloy

The effects of grain boundary character on the intergranular corrosion susceptibility of 2124 aluminum alloy were examined. In the study, the alloy was heat treated at 540oC and corrosion tested according to ASTM G110 standards. After obtaining grain orientations from the automated Electron Back-Scatter Diffraction (EBSD), both grain boundary character and grain boundary plane distributions wer...

Statistical Modeling of Minimum Intergranular Corrosion Path Length in High-Strength Aluminum Alloy

Intergranular pitting corrosion of CoCrMo biomedical implant alloy.

CoCrMo samples of varying microstructure and carbon content were electrochemically corroded in vitro and examined by scanning electron microscopy and electron backscatter diffraction techniques. The rate of corrosion was minimized (80% reduction from icorr = 1396 nA/cm(2) to icorr = 276 nA/cm(2) ) in high-carbon CoCrMo alloys which displayed a coarser grain structure and partially dissolved sec...

INFLUENCE OF LASER SURFACE HARDENING ON CORROSION PROPERTIES OF Al-Zn-Si CAST ALLOY

E. Tillová, L. Kuchariková, M. Chalupová, J. Belan, A. Vaško, I. Švecová, University of Žilina, Faculty of Mechanical Engineering, Slovak Republic This work is focused on the effect of the laser surface treatment (laser power 50 and 80 W) on microstructure and corrosion properties of self-hardened AlZn10Si8Mg cast alloy used for engine and vehicle constructions. The electrochemical impedance sp...