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MTRL 378 Assignment 2

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2. a) Using Excel: As Tm = 2041.15K This study source was downloaded by from CourseH on :43:32 GMT -06:00 Lv= 19600 9.5 ∗106=2.06∗109 J m 3 γ SL=0.239 J m 2 f 0=1011 s −1 C0= NA 9.5 ∗106=6.34∗1028 atoms m 3 Therefore, we could calculate the critical radius and the homogeneous nucleation rate in liquid platinum for different undercooling temperatures with the following equations: ∆Gv=∆ T∗Lv Tm r ¿= 2 γ SL ∆ Gv ∆Ghom . ¿ = 16π 3 ∗γ SL 3 ∆ Gv 2 T 1.3806(¿¿m−∆T)∗1023 −∆Ghom . ¿ ¿ Nhom.=f 0C0 exp¿ The temperature difference, in this case, are given. ΔT (K) r* (m) Nhom. (atoms/m3· s) 300 1.5763E09 7.22059E06 310 1.5255E09 0. 4 320 1.4778E09 0.69

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UBC
Faculty of Applied Science
MTRL 378
Assignment 2
Due: Jan 31, 2020




This study source was downloaded by 100000899606070 from CourseHero.com on 02-08-2026 00:43:32 GMT -06:00


https://www.coursehero.com/file/70985482/MTRL-378-Assignment2docx/

, 1.




2.
a) Using Excel:
As Tm = 2041.15K




This study source was downloaded by 100000899606070 from CourseHero.com on 02-08-2026 00:43:32 GMT -06:00


https://www.coursehero.com/file/70985482/MTRL-378-Assignment2docx/

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