Phase Composition Influence on Melt Viscosity and Ingot Structure Formation Features in EK77 Alloy

Effect of the alloy initial structure before remelting on the melt viscosity, its state prior to crystallization, and on processes occurring in the alloy in solid state during its subsequent treatment was investigated using EK77 alloy. The study was performed by means of torsional oscillation of the melt with crucible, scanning electron microscopy, and optical metallography.

Electromagnetic Modification of Aluminium Ingots in Rotary Casting Machine

This article considers the problem of modifying the ingot structure by electromagnetic effects in the rotor casting machine. The principle of the electromagnetic modifier operation and the apparatus design are described. The results of physical modeling process of electro-magnetic modification of crystallizing ingot are presented.

Effect of Combined Electromagnetic Fields on the Structure of a HDC Casting 2024 Al Alloy Ingot

2024 Al alloy ingot with diameter of 100 mm is produced by conventional and combined electromagnetic fields (CEMF) horizontal direction chill (HDC) casting processes. The effect of CEMF on the ingot structure is investigated. The results show that the CEMF is effective in changing the inner structure of the 2024 HDC cast ingot. In the conventional HDC ingot, feathery grains mainly distribute over the majority of the area of the ingot, and coarse equiaxed grains mixed with coarse floating grains distribute in a crescent-shaped area near the bottom surface. With the application of the CEMF, the majority of the feathery grains transform to fine equiaxed grains, and the mixture of feathery and fine grains only exist in the area near the upper surface. In addition, the coarse floating grains completely disappeared in the ingot with the application of CEMF.

Formation of Bulk Metal Ingots with Homogeneous Fine-Grained Structure Using Novel Semisolid Casting Technique

Novel semisolid casting method to produce bulk metal ingots with homogeneous fine-grained structure is proposed. In the method, the fine-grained particles are subjected to partial melting and compacting. As a result, the ingot structure is constituted mainly by fine-grained particles bonded by inerlayers of solidified melt.

LESCALLOY 300M VAC ARC

LESCALLOY 300M VAC ARC is a low-alloy steel with an excellent combination of high hardenability and high strength coupled with good ductility and good toughness. Its tensile strength ranges from 280,000 to 300,000 psi. It is produced by the vacuum consumable electrode melting process to provide optimum cleanliness and preferred ingot structure. Its applications include aircraft components, pressure vessels and fasteners. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-321. Producer or source: Latrobe Steel Company. Originally published March 1976, revised February 1993.

LESCALLOY 4330 + V VAC-ARC

LESCALLOY 4330 + V VAC-ARC steel is a vanadium modified 4330 having improved hardenability and mechanical properties. It is produced by consumable electrode vacuum are remelting providing optimum cleanliness and preferred ingot structure. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-314. Producer or source: Latrobe Steel Company. Originally published May 1975, revised March 1992.

DYNAFLEX VAC-ARC

DYNAFLEX VAC-ARC steel is a medium alloyed, air hardening ultra high strength grade. It is produced by consumable electrode vacuum melting which provides superior cleanliness, elimination of dissolved gases and preferred ingot structure. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance as well as heat treating. Filing Code: TS-144. Producer or source: Latrobe Steel Company. Originally published as Dynaflex, February 1964, revised December 1991.