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under the protection of high purity argon atmosphere. The ingots were cast into rods with the diameter of 6.8 mm. The grain-aligned rods were fabricated by zone melting in alumina crucibles (inner......
diffraction and SEM-EDS, the external scale is TiO2 about 20 μm in thickness, beneath it a NiTiO3 layer (average 6 μm in thickness) embeds in thick outer and inner TiO2 layers, showing a sandwich structure......
]. But in the process, any deviation of the forming parameters influences the deformation state and thus provokes the wrinkles in the inner regions subjected to compressive stresses. Essentially, the process is a tri......
the homogenization resulted from the diffusion of copper from the interdendritic regions to the inner regions of dendrite. Fig. 5 Evolution of newly formed S-phase particles: (a) As-cast; (b......
refined grain structure. JONES et al [5] have studied the correlation between microstructure and microhardness in a friction stir welded 2024 aluminum alloy. The results showed that the inner HAZ (heat......
the added Si was melted completely, Al-5Ti, Al-5Ti-1B or A-4B was added to the melt, the melt was then poured into a steel mould (30 mm in inner diameter and 70 mm in depth) at about 720 ℃. The specimens were......
also stronger, which results in the formation of more nuclei and more nuclei moving to the inner melt. With the increase of magnetic flux density the microstructures become finer and more uniform......
. In the forging process of multi-ribs part, metal flows along the lateral wall to fill the rib cavities, which causes the outer corners to be filled prior to the inner corners, as shown in Fig.9. So in the area......
that of inner grain. It is found that the depth of the tri-grain intersection is about 0.5 mm deeper than that of the double grain boundary, as shown in Fig.2(c). 3.2 Grain growth without electromagnetic......
Grain size refinement of magnesium composite alloys by addition of B2O3 BU Le-ping(卜乐平)1,2, S. TANAKA1, M. TSUSHIDA3, S. ANDO3, H. TONDA3 1. Graduate School of Science and Technology,Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan; 2. Machinery and Electronic Engineering Institute, Inner Mongolia University of Agriculture, Hohhot 010018, China; 3. Department of materials......