WebSep 28, 2024 · The average grain size of equiaxed grain in the ingot center is larger than that in 1/2 radius and decreases with the increase in casting speed, as shown in Fig. 7 . WebApr 13, 2024 · After homogenization, the ingots were machined using a wire electrical discharge machining process to obtain the test samples. The test samples were then heat-treated at 850°C for 30 minutes, followed by quenching at room temperature to activate the shape memory effect. ... Effects of grain refinement on the structure and properties of a ...
Factors affecting the grain structure of as-cast …
WebSteel ingots and concast strands are reduced to finished sections by hot rolling (Figure 15.10).Finished sections can be structural I-beams, channel sections and angles, round bars, plates, strip, rectangular or hexagonal sections, railroad rails, reinforcing bar, etc. Seamed tubes can be made by passing white-hot strip through rolls having concave … WebThe ingot solidifies from the outside progressing towards the center and thus the ingot's grain structure develops as columnar and pointing in the direction of solidification. This grain structure development is typical of cast materials. Due to long hardening times ingots tend to also develop grains that are large in size. datto backup agent firewall
The structure of ingot castings: Canadian Metallurgical …
WebA cast ingot of pure aluminum has a structure which consists mainly of large columnar grains, whereas a cast ingot of aluminum containing Al–Ti inoculant powder consists of small equiaxed grains. ... Further from the mould surface, the grain structure evolves into columnar grains growing roughly perpendicular to the mould surface. The origin ... WebJan 1, 2024 · The initial ingot (135 × 135 × 210 mm in size) was heated to the target temperature (460 °C and/or 510 °C) with a heating rate of 5 °C/min and then held for 2 h. ... The grain structure was coarse and similar for the samples processed by CM and HTF because the DRV rate was high and the stored energy was low at 460 °C, resulting in low ... WebApr 11, 2024 · Compared with the ingot extruded alloy, the influence of processing technology on the mechanical properties of recycled alloy was analyzed from two main aspects: DRX structure and chip bonding. The results show that with the increase of extrusion temperature, the ultimate tensile strength and elongation of the recycled alloy … bk9 sheath