Mechanical Properties and Corrosion Behavior of As-Cast Mg-Zn-Zr-(La) Magnesium Alloys

The effects of La content on the mechanical properties and corrosion behavior of as-cast Mg-Zn-Zr (ZK) magnesium alloys were investigated. The results showed that La addition to ZK60 alloy resulted in a considerable grain refinement and an increase in the volume fraction of second phases by formation of Mg-Zn-La ternary phase. The tensile tests were performed at both room and elevated temperatures. At room temperature, the yield and tensile strengths and elongation-to-fracture significantly increased with 0.2 wt.% La addition, then deteriorated slightly with increasing La additions above 0.2 wt.%. At 200 °C, the yield and tensile strengths continually improved and elongation-to-fracture decreased with increasing La content due to the presence of thermally stable Mg-Zn-La phase. Immersion and electrochemical corrosion tests revealed that the formation of Mg-Zn-La phases led to a higher amount of cathodic sites and preferential corrosion propagation, and thus a decrease in the corrosion resistance of ZK60 alloys.     

Effects of 1WT.% Ti,In, and Sn Additions on the Microstructure,Mechanical and Corrosion Properties of the As-Cast and Hot-Rolled AM60 Magnesium Alloys

Metal Science and Heat Treatment - We study the influence of 1 wt.% Ti, In and Sn additions on the microstructure, mechanical properties and corrosion resistance of the as-cast and hot-rolled AM60...     

Wear behaviour of Al/(Al2O3p+SiCp) hybrid composites

In this study, dry sliding metal–metal and metal–abrasive wear behaviours of the aluminium matrix hybrid composites produced by pressure infiltration technique were investigated. These composites were reinforced with 37 vol% Al₂O₃ and 25 vol% SiC particles and contained up to 8 wt% Mg in their matrixes. While matrix hardness and compression strength increased, amount of porosity and impact toughness decreased with increasing Mg content of the matrix. Metal–metal and metal–abrasive wear tests revealed that wear resistance of the composites increased with increasing Mg addition. On the other hand, abrasive resistance decreased with increasing test temperature, especially above 200 °C.     

Effect of Lanthanum on the Microstructure and Mechanical Properties of Hot-Rolled Magnesium Alloy AZ31

Metal Science and Heat Treatment - The effect of lanthanum additions (0.2 – 1.0%) on the microstructure and mechanical properties of magnesium alloy AZ31 is studied after hot rolling with...     

Pure Bending Fatigue Crack Propagation in Deep-Drawn Steel Cord Filaments

Metal Science and Heat Treatment - Wires with diameter 0.25 mm from a carbon steel with 0.70 and 0.90% C for tire cords are studied. The effect of the treatment modes, of the carbon content and of...