Recrystallization of heavy metals after cold deformation

Conference · Sat Jun 01 00:00:00 EDT 1996

OSTI ID:237708

Goren-Muginstein, G R; Rosen, A ^[1]

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1. Israel Inst. of Tech., Haifa (Israel). Dept. of Materials Engineering

Rapid heating experiments, of the order of tens of seconds, were performed on a 90%W-7%Ni-3%Fe alloy, which was cold worked by rotary swaging to 50% reduction in diameter. It was found that even very short periods of heating brings to the separation of the elongated tungsten grains into small round ones, therefore refining the microstructure. The process involves melting of the matrix and its penetration into the tungsten grains. During cooling, very small, new grains are precipitated. It is suggested that grain refining is achieved by penetration of the molten matrix into the solid tungsten grains through subgrain boundaries.

• OSTI ID: 237708
• Report Number(s): CONF-9510290-; ISBN 1-878954-58-X; TRN: 96:013494
• Resource Relation: Conference: International conference on tungsten and refractory metals, their alloys, composites and carbides, McLean, VA (United States), 15-17 Oct 1995; Other Information: PBD: 1996; Related Information: Is Part Of Tungsten and refractory metals 3, proceedings; Bose, A. [ed.] [Parmatech Corp., Petaluma, CA (United States)]; Dowding, R.J. [ed.] [Army Research Lab., Watertown, MA (United States)]; PB: 265 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
TUNGSTEN ALLOYS
COLD WORKING
RECRYSTALLIZATION
MICROSTRUCTURE
NICKEL ALLOYS
IRON ALLOYS
HEAT TREATMENTS
LIQUID METALS
QUENCHING
PRECIPITATION
OPTICAL MICROSCOPY
SCANNING ELECTRON MICROSCOPY
GRAIN GROWTH
TRANSMISSION ELECTRON MICROSCOPY
GRAIN SIZE
GRAIN BOUNDARIES