Effect of initial orientation of single-crystal tungsten on its deformation during high-temperature rolling in vacuum

Journal Article · Mon Jan 01 04:00:00 EST 1973 · Izv. Vyssh. Ucheb. Zaved., Tsvet. Met., no. 4, pp. 160-162

OSTI ID:4326297

Krupin, A V; Linetskii, B L; Gurevich, Ya B; Mikhridinov, R M; Papchenko, V I

Single-crystal tungsten was rolled in a vacuum of 3 to 5 x 10/sup -5/ mm Hg std at temperatures of 800, 1000, 1200, and 1400 deg C at a rate of 0.1 m/s. Steel rollers were used at 800 to 1200 deg C and alloy rollers at 1400 deg C so that no sticking took place during rolling. Results showed that at all temperatures, the single crystals {001} (110) {001} (110) and {111} (110) even at degrees of deformation of 70 to 75% per pass are deformed without any sign of breakdown. At all rolling temperatures the metal becomes cold-worked, as shown by increase in Vickers hardness; the degree of coldworking decreases with temperature. The coldworking and also the deformability do not depend on initial orientation. Samples were rolled to a final thickness of 1 mm by various methods. No breakdown could be observed. Thus, hightemperature rolling in vacuum is an effective method of producing high-quality articles from single-crystal refractory metals. (SJR)

• Research Organization: Moscow Steel and Alloy Inst.
• NSA Number: NSA-29-027281
• OSTI ID: 4326297
• Journal Information: Izv. Vyssh. Ucheb. Zaved., Tsvet. Met., no. 4, pp. 160-162, Journal Name: Izv. Vyssh. Ucheb. Zaved., Tsvet. Met., no. 4, pp. 160-162; ISSN IVUTA
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

*TUNGSTEN-- ROLLING
COLD WORKING
DEFORMATION
HOT WORKING
MONOCRYSTALS
N50220* --Metals
Ceramics
& Other Materials--Metals & Alloys--Preparation & Fabrication
ORIENTATION
VERY HIGH TEMPERATURE