Search Results for casting structure

Fig. 8 Haynes 31 casting microstructures. (a) As-cast structure consisting of large primary M 7 C 3 particles and grain-boundary M 23 C 6 in an fcc matrix. 400×. (b) As-cast thin section, aged 22 h at 730 °C (1350 °F) with precipitated M 23 C 6 at grain boundaries and adjacent to primary (M More

Fig. 8 Haynes 31 casting microstructures. (a) As-cast structure consisting of large primary M 7 C 3 particles and grain-boundary M 23 C 6 in a face-centered cubic (fcc) matrix. Original magnification: 400×. (b) As-cast thin section aged 22 h at 730 °C (1350 °F) with precipitated M 23 C 6 More

Fig. 23 Structure in U-3.8%Si alloy. (a) As-cast structure with U 3 Si 2 (brown) surrounded by a rim of U 3 Si (white) in a matrix of U-U 3 Si eutectic. (b) Same casting as shown in (a) but after heating for three days at 870 °C (1600 °F). U 3 Si twinned martensite is colored; untransformed U More

Fig. 31 Structure in U-3.8%Si alloy. (a) As-cast structure with U 3 Si 2 (dark grey) surrounded by a rim of U 3 Si (white) in a matrix of U-U 3 Si eutectic. (b) Same casting as in (a) but after heating for three days at 870 °C (1600 °F). U 3 Si twinned martensite is colored; untransformed U 3 More

Fig. 6 As-cast structure of Co-Cr-W-Ta superalloy (MAR-M 509). (a) The structure consists of metal carbide (MC) particles in script form and M 23 C 6 particles in eutectic form (gray areas) and precipitate form in the dendritic alpha solid-solution matrix. (b) Higher magnification reveals More

Fig. 6 As-cast structure of Co-Cr-W-Ta superalloy (MAR-M 509). (a) The structure consists of metal carbide (MC) particles in script form and M 23 C 6 particles in eutectic form (gray areas) and precipitate form in the dendritic alpha solid-solution matrix. (b) Higher magnification reveals More

Fig. 6 Three types of as-cast structures seen in centrifugally cast ferrous alloys. (a) Fine columnar skin, large welloriented columnar grains, and equiaxed area. (b) Completely equiaxed structure sometimes observed in ferritic steels. (c) Equiaxed bands of varying grain size. This type More

Fig. 3 Micrographs of zirconium grade 702C cast structure at (a) ∼100× and (b) ∼200× (original magnification). Courtesy of ATI Wah Chang More

Fig. 4 Micrographs of zirconium grade 705C cast structure at (a) ∼100× and (b) ∼200× (original magnification). Courtesy of ATI Wah Chang More

Fig. 24 Backscattered electron image showing refined as-cast structure in the Ti-Al-8Nb-1B alloy. Source: Ref 55 More

Fig. 41 Alloy C28000 (Muntz metal) ingot, as-cast. Structure is dendrites of α phase in a matrix of β phase. Etchant 1, Table 2 . 210× More

Fig. 18 Cast structure of alloy 718 showing dendritic segregation and Laves phase. Original magnifications: (a) 50×, (b) 100×, (c) 250×, (d) 500× More

Fig. 19 Cast structure of alloy 718 after homogenization treatment of 1125 °C (2057 °F) for 48 h showing dendritic pattern with carbides present. Laves phase has been removed. Original magnification: (a) 50×, (b) 100×, (c) 250×, (d) 500× More

Fig. 5 Micrograph of typical dendritic cast structure More

Fig. 46 Hastelloy B. (a) As-cast. Structure consists of M 6 C at grain boundaries and as islands in the γ matrix. (b) Casting, annealed at 1175 °C (2150 °F) for 2 h and water quenched. M 6 C islands in the matrix. Both electrolytic etch: HCl and CrO 3 . Original magnification, both 300× More

Fig. 47 Hastelloy C. (a) As-cast. Structure consists of M 6 C at grain boundaries and as islands in the γ matrix. (b) Casting, annealed at 1230 °C (2250 °F) for 2 h and water quenched. M 6 C in γ matrix. Both electrolytic etch: CrO 3 . Original magnification, both 300× More

Fig. 49 Alloy 713C. (a) Ingot, 250 mm (10 in.) diam, as-cast. Structure is a matrix of γ solid solution containing “script” MC carbide in a characteristic dendritic arrangement. HCl, methanol, and CuCl 2 . (b) As-cast. The MC arrangement is in a “script” pattern. The matrix is γ solid solution More

Fig. 51 MAR-M 246, as-cast. Structure consists of precipitated γ′ in the γ matrix (A) and fine particles of carbide or primary γ′ at grain boundaries (B). Marble's reagent. Original magnification 500× More

Fig. 74 Haynes 21 cobalt-base alloy, as-cast. Structure consists of primary M 7 C 3 particles in an α (face-centered cubic) matrix. Electrolytic etch: HCl. Original magnification 200× More

Fig. 75 Haynes 31, as-cast. Structure consists of large, primary M 7 C 3 particles and grain-boundary M 23 C 6 in an α (face-centered cubic) matrix. Electrolytic etch: 2% CrO 3 . Original magnification 400× More