THE LOCATION OF GRAIN BOUNDARIES IN CASE OF RECRYSTALLIZATION

Journal Article · Sat Sep 01 04:00:00 EDT 1962 · Metalloved. i Term. Obrabotka Metal.

OSTI ID:4794485

Bokshtein, S Z; Bronfin, M B; Kishkin, S T; Moroz, L M

It was established earlier (Zavodskaya Laboratoriya, No. 10 (1960)) that during the heating of deformed metals the atoms of the grain boundary remain at their former location. This observation was further confirmed by making use of radioactive isotopes. The behavior of C, P, S, Si, Al, Mn, Ni, and Cu impurities at the grain boundary during the recrystallization of Fe was investigated by a method involving autoradiography and microstructural analysis. The impurity atoms were introduced by diffusion saturation of the specimens at temperatures ranging from 600 to 700 deg C. Tests were also made with radioactive W/sup 185/ in Mo-Zr alloys. Results indicated that the impurity atoms remain at their old location in spite of the great structural changes which take place in the metal during the annealing period. Both autoradiography and microstructural studies revealed that the accelerated migratton of atoms followed a preferential path alongside the former grain boundary. It was concluded that shifting of the grain bound, ary generates a much higher concertration of defects at the starting and final point of the boundary shift than in the volume of the grains. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-000560
• OSTI ID: 4794485
• Journal Information: Metalloved. i Term. Obrabotka Metal., Journal Name: Metalloved. i Term. Obrabotka Metal. Vol. Vol: No. 9
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ALUMINUM
CARBON
CONFIGURATION
COPPER
DEFECTS
DIFFUSION
GRAIN BOUNDARIES
IMPURITIES
IRON
ISOTOPES
MANGANESE
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM ALLOYS
NICKEL
PHOSPHORUS
RADIOAUTOGRAPHY
RECRYSTALLIZATION
SILICON
SULFUR
TEMPERATURE
TRACER TECHNIQUES
TUNGSTEN 185
ZIRCONIUM ALLOYS