Search Results for spheroidization

Fig. 2 Mechanisms of the spheroidization of alpha lamellae. (a) Spheroidization driven by the formation of subboundaries or shear bands within alpha lamellae. Source: Ref 9 . (b, c) Observation of shear bands developed during hot deformation. Source: Ref 8 , 11 More

Fig. 29 Temperature-time plot of pearlite decomposition by spheroidization and graphitization. The curve for spheroidization is for conversion of one-half of the carbon in 0.15% C steel to spheroidal carbides. The curve for graphitization is for conversion of one-half of the carbon in aluminum More

Fig. 13 Effect of strain and strain rate on percent spheroidization of Ti-49Al-2V at 1330 K. Source: Ref 15 More

Fig. 44 Effect of spheroidization on the rupture strength of carbon-molybdenum steel (0.17C-0.88Mn-0.20Si-0.42Mo). Source: Ref 73 More

Fig. 6 The extent of spheroidization at 700 °C (1290 °F) for 200 h for the 1040 steel starting from a ferrite-pearlite microstructure etched in 4% picral. Original magnification: 1000× More

Fig. 8 Effect of partial spheroidization on surface finish and tool life in subsequent machining of 5160 steel. (a) Annealed (pearlitic) microstructure (hardness: 241 HB) and surface finish of flange after machining of eight pieces. (b) Tool life between grinds, min. (c) Partially spheroidized More

Fig. 21 AISI W1 (1.05% C). Influence of starting structure on spheroidization. (a) As-rolled; contains coarse and fine pearlite. (b) After spheroidization (heat to 760 °C, or 1400 °F; cool at a rate of 11 °C/h, or 20 °F/h, to 595 °C, or 1100 °F; air cool). (c) Austenitized at 870 °C (1600 °F More

Fig. 5 Static spheroidization via termination migration. (a) Plot of τ vd /τ′ as a function of ξ. (b, c) SEM backscattered micrographs of the microstructure developed in Ti-6Al-4V samples deformed at 955 °C to an effective strain of 1.1 and water quenched after holding at temperature for (b) 1 More

Fig. 28 Temperature-time plot of pearlite decomposition by spheroidization and graphitization. The curve for spheroidization is for conversion of one-half of the carbon in 0.15% C steel to spheroidal carbides. The curve for graphitization is for conversion of one-half of the carbon in aluminum More

Fig. 7 Schematic of plasma spheroidization process. Adapted from Ref 21 More

Fig. 15 Effect of carbon content and spheroidization on ductility. Source: Ref 17 More

Fig. 25 AISI L1, spheroidize annealed. Note the very-well-formed spheroidal carbides. 4% picral. 500× More

Fig. 76 Spheroidized cementite particles pinning a recrystallization front during intercritical annealing of a low-carbon steel. Note the recovered dislocation substructure to the left of the front. Thin foil TEM specimen More

Fig. 24 Deformation and fracture map for spheroidized 1045 steel. Source: Ref 40 More

Fig. 28 Dispersion of spheroidal carbides in a matrix of ferrite (UNS G521000 steel) obtained by spheroidizing. Etched with 4% picral + 0.05% HCl. 1000× More

Fig. 18 Macrostructure of a spheroidal graphite iron etched by direct austempering after solidification. Source: Ref 13 More

Fig. 27 Microstructures of spheroidal graphite iron found in the same microshrinkage cavity from a spheroidal graphite iron plate. (a) Austenite dendrites. (b) Eutectic (spheroidal graphite) aggregates. Source: Ref 21 More

Fig. 28 Mechanism of solidification of spheroidal graphite iron showing primary dendrite grains and graphite nodules growing from the eutectic intradendritic liquid More

Fig. 9 Model output of microstructure evolution of eutectic spheroidal graphite iron during solidification. (a) Solidification fraction ( f s ) = 0.24. (b) f s = 0.55. (c) f s = 0.72. (d) f s = 0.99. Length of each square = 200 μm. Source: Ref 17 More

Fig. 38 Spheroidized cementite in a hypereutectoid steel that was heated after cold rolling of a prior-ferrite-pearlite microstructure. During plastic deformation, dislocations broke up the cementite lamellae in the pearlite, and subsequent heating allowed the material to minimize its energy More