Question

The Fe-3.5% Si alloy was experienced 60% cold work and then annealed at different temperatures. The recrystallization data are reported in Figure 9.32

1.0 o 0.8 850°C 1000°C 800°C 0.6 700°C 550°C 952°C 3 0.4 750°C 600°C 911°C 650°C 0.2 0 0.001 0.01 0.11 10100 1000 10,000100,000 Time (s FIGURE 9.32 Recrystallization kinetics of Fe-3.5% Si after 60% cold work. (From J. Czochralski, in Modern Metallkunde, Berlin, 1924. With permission.) 8 1 0

a. The activation energy of the recrystallization of Fe-3.5% Si alloy experienced 60% cold work

b. The time required for 50% recrystallization at 350C

Answer 1

Answer e Annhe R1 om ta Annhiniuj 50、1. Soy. ne.tntal .300 6a 0,01 Timea

had occoed At:95 2 2. Di vding '32 2. 0,01 8.314x71 8314 XT aT RT2 e.

4.1 へ100 canc (b)--Pitti Pon he valve LS ıç > Az 1317x1016

CA at 350。 5Iu AT Atar園