I need a bit oh help solving this multi-part question, thanks in
advance!
- Hi I Need A Bit Oh Help Solving This Multi Part Question Thanks In Advance 1 (102.96 KiB) Viewed 29 times
Hi! I need a bit oh help solving this multi-part question, thanks in advance!
-
answerhappygod
- Site Admin
- Posts: 899603
- Joined: Mon Aug 02, 2021 8:13 am
Hi! I need a bit oh help solving this multi-part question, thanks in advance!
Hi!
I need a bit oh help solving this multi-part question, thanks in
advance!
Question 3: Q 3A: What is annealing? Explain the three stages of annealing? (5) Q 3B A 11.93 mm diameter metal bar with a 51.2 mm gage length lo is subjected to a tensile test. The measurements in Table 1 are made in the plastic region. Determine the strain- hardening exponent for the metal. (10) Table 1: Reference data for Q3B. Change in Length (mm) 5.3416 Force (N) 122326.1 Diameter (mm) 12.192 11.247 11.596 120101.9 114319.3 17.772 11.031 Q 3C: The liquid nickel is undercooled until homogeneous nucleation occurs. Calculate the critical radius of the nucleus required and the number of nickel atoms in the nucleus. The lattice parameter of the solid FCC nickel is 0.312 nm. If needed use the information in Table 2. (10) Material Freezing Temperature (T.) 962 1085 1453 Table 2: Reference data for Q3C. Solid-Liquid Heat of Fusion (AH) Interfacial Energy (Osi) 955 126*10-7 1628 177*10-7 2156 205*10-7 Typical Undercooling for Homogeneous Nucleation (AT) 250 236 448 Ag Cu Ni
I need a bit oh help solving this multi-part question, thanks in
advance!
Question 3: Q 3A: What is annealing? Explain the three stages of annealing? (5) Q 3B A 11.93 mm diameter metal bar with a 51.2 mm gage length lo is subjected to a tensile test. The measurements in Table 1 are made in the plastic region. Determine the strain- hardening exponent for the metal. (10) Table 1: Reference data for Q3B. Change in Length (mm) 5.3416 Force (N) 122326.1 Diameter (mm) 12.192 11.247 11.596 120101.9 114319.3 17.772 11.031 Q 3C: The liquid nickel is undercooled until homogeneous nucleation occurs. Calculate the critical radius of the nucleus required and the number of nickel atoms in the nucleus. The lattice parameter of the solid FCC nickel is 0.312 nm. If needed use the information in Table 2. (10) Material Freezing Temperature (T.) 962 1085 1453 Table 2: Reference data for Q3C. Solid-Liquid Heat of Fusion (AH) Interfacial Energy (Osi) 955 126*10-7 1628 177*10-7 2156 205*10-7 Typical Undercooling for Homogeneous Nucleation (AT) 250 236 448 Ag Cu Ni