[PDF] Top 20 Effects of Nd or Zr Addition on Microstructure and Mechanical Properties of As Cast Mg Zn Y Alloy

... It is known that the strengthening role of any kind of hard phase that distributes in interdendritic regions depends on its amount, size and morphology. A good strengthening role can be obtained when a certain amount of ... See full document

... microstructures, mechanical properties, in vitro corrosion behavior, and cytotoxicity of as-cast Mg- 1Mn-2Zn-xNd alloys (x = ...whether Nd is an effective element to increase the ... See full document

... low mechanical properties at elevated ...neodymium Nd is added to ...Mg-0.3Zn-0.32Zr alloy. A significant grain refinement has already been achieved by the Zr addition in ... See full document

... as-cast Mg-Ce-Zn-Zr alloy (base alloy) and the Nd-containing alloys (1Nd, 2Nd and 3Nd) are shown in ...respectively. Microstructure of all alloys mainly consists of ... See full document

... strength, mechanical properties and creep resistance (Ahmad, Asmael et ...In addition, this RE usually added as mischmetal (MM) or didymium ...(Pr). Addition of rare earth also reduce weld ... See full document

... elements. Zn is a commonly used as alloying element with magnesium and its strengthening effect is only following ...4wt% Zn which was chosen in this work was reported to be the optimum Zn content ... See full document

... beneficial properties more than base metal ...good mechanical properties compared with the alloy regardless of sliding speed and applied ...Al-7075 alloy reinforced with E-glass and Fly ... See full document

... corrosion properties. Single addition of Sb shows a similar effect like ...La, Nd, Pr) improved the corrosion resistance for Mg–Al based alloys in chloride ... See full document

... (Zn, Y), resulting in suppression of excessive formation of the LPO ...structure. Alloy composition control is necessary to obtain an appropriate volume fraction of the lamellar phase because a large ... See full document

... Grain size of a WZ73 alloy was refined to 1.6 mm by ECAE at 623 K. Fine dispersoid particles were observed in the grain boundaries. The strength and the ductility of the ECAE processed material exceeded those of ... See full document

... Al-Zn-Mg alloy and the effects of minor ...refinement, mechanical properties and microstructures of this alloy have been ... See full document

... RRA temper will cause a decrease in the length and density of dislocation lines (Fig. 9(b)), and thereby can improve the SCC resistance of RRA temper. However, the Two-Step temper possesses more homogenous slip mode than ... See full document

... the cast microstructure, reflecting the difference in ...zirconium addition, the mechanical properties of the primary -Mg grains must also be ...and Mg 12 La ... See full document

... of Mg alloys, many intensive and extensive fundamental investigations have been carried out during the past ...corrosion properties of Mg ...the addition of rare earth elements (RE) to ... See full document

... better properties and near net ...In Mg alloys, AZ91 (Mg- 8.98 mass% Al-1.02 mass% Zn) alloy, AM50 (Mg-5 mass% ...Mn) alloy and RZ5DF (Mg-4.2 mass% Zn- 1 ... See full document

... and (b), respectively. After pre-heating for 30 min, dendrites present in as-cast state develop into grains. However, the overall grain structure still resembles the as-cast structure and has the ... See full document

... Figure 2 shows the OM and SEM images of the as- homogenized alloy. The average grain size was estimated to be about 58 µm. It can be seen from Fig. 2(a) that the block- shaped phases are discontinuously ... See full document

... as-cast Mg-Gd and Mg-Y alloys are formed during cooling of ingot after solidification and completely solutionized by subsequent solution (homogenization)-treat- ment at 773 ...K. ... See full document

... low mechanical properties of Mg alloys at elevated temperatures and relatively poor corrosion resistance have retarded their wider ...for alloy development is to enhance both elevated ... See full document

... structure of the T6 treated specimen is quite similar to that of the as-cast specimen. However, there is a very important difference between these two specimens; the coarse Si particles present in the ... See full document