Breakdown of primary grain boundary inhibition in 3 pct si-fe sheet
Tóm tắt
Grain boundary inhibition in 11-mil cold rolled decarburized 3 pct Si-Fe sheet was observed to break down by isothermal annealing at temperatures in excess of 1075°C. Small MnS particles (-r < ~260Å) responsible for inhibiting primary grain growth in this material were observed to undergo complete dissolution within 3 min at temperatures of 1100°C and higher. Calculated dissolution rates were in good agreement with this observation. The dissolution of these particles produced appreciable primary grain growth during the early stages of (110)[00l] secondary recrystallization which was responsible for an overall reduction in the volume percent of (H0)[00l] grains produced on prolonged isothermal annealing at temperatures above 1075°C.
Tài liệu tham khảo
J. E. May and D. Turnbull:J. Appl. Phys., 1959, vol. 30, p. 2105.
V. V. Gubernatorov, L. P. Levit, B. K. Sukolov, I. K. Schastlivtseva, and D.B. Titorov:Phys. Metals Metallog., 1967, no. 3, p. 146.
H. Margolin, Ed.:Recrystallization, Grain Growth and Textures, p. 461, ASM, Metals Park, Ohio, 1966.
R. M. Bozorth:Ferromagnetism, p. 584, D. Van Nostrand Company, Inc., Princeton, N. J., 1964.
M. Hillert:Acta. Met., 1964, vol. 13, p. 206.
J. E. May and D. Turnbull:Trans. TMS-AIME, 1958, vol. 212, p. 769.
C. Zener: as quoted by C. S. Smith,AIME Trans., 1948, vol. 175, p. 15.
R. W. Heckel:Trans. TMS-AIME, 1965, vol. 233, p. 1994.
N. G. Ainslie and A. U. Seybolt:J. Iron Steel Inst., 1960, vol. 194, p. 341.