Witryna28 lut 2024 · As there are only a few potent refiners commercially established for a specific group of alloy systems that produce completely equiaxed grains during solidification in large castings (e. g. Zr in Mg produces refinement to < 100 μm [ 5 ]), vibration or external fields are considered as potential alternative methods to obtain … Witryna23 gru 2016 · With the progression of directional solidification, the crystal structure of the material transforms to equiaxed (Zone 4: CEC), although the crystal size is relatively …
Grain Refinement of Aluminum and Aluminum Alloys by Sc and Zr
Witryna25 lis 2024 · During the solidification progress, four equiaxed microstructures, corresponding to fraction solid (f S) varying from 0.61 up to 0.91, were selected, and scaled 3D samples were printed with a side length of 5 × 5 × 5 cm 3. Seven polyamide samples (see Figure 3) for 4 equiaxed morphologies were produced by a fused … WitrynaTo determine the origin of the equiaxed crystals, heterogeneous nucleation, and/or fragmentation of dendrite arms from columnar regions are often discussed. In the … is simplelogin safe
Computational Materials Science - unileoben.ac.at
Witryna28 lut 2024 · The origin of equiaxed grains under an external field also depends on the casting conditions (volume and shape of casting) and the type of alloy other than the mechanisms specific to a particular technique. WitrynaChallenge of modeling equiaxed solidification Understanding to the equiaxed solidification was significantly improved in the last decades [5,6], but most important knowledge about the crystal transport, i.e. one origin … WitrynaThe three phases are the melt, air and globular equiaxed crystals. Results showed that pouring via multiple streams increases the volume fraction and number density of crystals in the as-filled state. ... On the origin of equiaxed zone in castings, Trans. Metall. Soc. AIME 236 (1966) 179-158. Google Scholar [8] T. Wang, S. Yao, X. … ifac registered bodies