[PDF] Top 20 Effect of praseodymium addition on microstructure and hardness of cast ZRE1 magnesium alloy

... base alloy melted around 730 °C, and then the temperature was kept at 730 °C, with stirring for a view minutes to ensure dissolution of alloying elements, then pouring in a steel mold (preheated up to 500 °C) at ... See full document

... and hardness measurements were used to investigate the effects of yttrium (Y) additions on as cast ZRE1 magnesium ...base alloy. The microstructure results show the refinement of ... See full document

... The Mg, Al, Zn ingots with a minimum purity of 99.9% were purchased from Karasu Metal Co., Turkey. Pure Mg and Al were melted at 750°C under a protective Ar gas in a graphite crucible. The analyzes of the alloys used in ... See full document

... die cast process, the Al concentration at the solid–liquid interface gradually increases and Al atoms subsequently segregate in the grain boundary or inter-dendritic ... See full document

... However, cast magnesium and magnesium alloys are subject to problems due to gas pores, inclusion particles, oxide films, and so ...the microstructure and determination of the mechanical ... See full document

... of cast magnesium- based alloys depend on the cross-sectional thickness of the casting and/or the distance from the mold surface of the ...the microstructure of the part and the associated mechanical ... See full document

... Aluminium alloy materials. Aluminium alloy materials are found to be the best alternative with its unique capacity to design the materials to give required ... See full document

... for alloy 1, while the smallest value is for alloy 4 containing Zr and Ti along with Mg in pure ...in alloy 4 than alloy 1 hence SDAS is lower in this ...Also, alloy 2 and 3 has smaller ... See full document

... for magnesium alloys because processing temperatures lower than conventional casting processes result in decreased combustibility of the magnesium ... See full document

... AZ91D magnesium alloy were anodized by DC or AC electrolysis in a solution of phosphate and ammonium salt in which the anodized layer is formed by local discharge, followed by rapid ...and hardness ... See full document

... Aluminium alloy is a high strength heat treatable alloy having wide range of engineering applications such as automotive and aerospace industry for the complicated castings which must complies of high ... See full document

... a magnesium alloy that is widely used in die- casting and sand-casting ...this alloy shows a good balance of castability and mechanical properties, it is often used for structural components in ... See full document

... for microstructure refining, In addition, the remaining phase is in deep super-cooling state when temperature is dropped to the eu- tectic ...the microstructure refining as the applied pressure is ... See full document

... In addition, these lightweight alloys demonstrate good surface finish and high specific ...Vickers hardness tester was used to determine the hardness of these composite ...The addition of ... See full document

... Ca addition on the corrosion resistance of AZ31 magnesium alloys was evaluated by observation of microstructure and measurement of corrosion potential and average corrosion ...the alloy ... See full document

... into cast components and about 70% of all aluminum castings are used in the transport industry, in particular in the automotive sector ...The addition of alkali or alkaline earth elements changes the ... See full document

... the effect of Ni addition on the microstructure, hardness, tensile properties and wear rate of the cast ...Al-0.4Mg-8Si alloy. The Al-0.4Mg-8Si alloy was melted in an ... See full document

... resulting microstructure (average grain size and shape and the distribution of grain size) in semi-solid metal state and the degree of particle agglomeration appear to be the most significant material ... See full document

... the hardness data for these cases allow examination of the role of AM process variables prior to the property improvements during post ...the hardness variation and assess the extent to which AM processes ... See full document

... 3.2 Creep parameters of AM50 + xCa die-cast alloys Minimum creep rates for the AM50 + xCa (x ¼ 0:47, 0.95 and 1.72 mass pct) alloys at 473 K are summarized as a function of stress in Fig. 3, accompanied by the ... See full document