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Femme_physics
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Material Science Questions...
I finally got to exercise a bit of material science. I'd like to know whether what I'm saying correct or no. I also ran into two issues with Brinell's hardness calculations and SEA chart. I'd appreciate feedback! :) 1) Decreasing the size of the nucleus causes...
A) Increasing plasticity
B) Increasing strength
C) Thermic durability
D) A+B
I chose A. I do know for sure that decreasing the size of the nucelous makes the material stronger. It just makes more sense that when you have more little things to break
2) What's the correct sentence? (Based on the unit cell crsytal formation lattice)
A) Vanadium is more plastic than Magnesium
B) Vanadium is stronger than Magnesium
C) Vanadium is less hard than Magnesium in high temp'
Vanadium is a BCC. Mg is CPH.
CPH (and FCC) are denser than BCC. Therefor, I chooose B. Vanadium is stronger than Magnesium.
3) What thermal treatment is designed to unite steel?
A) Annealing
B) Homogenization
C) Tempering
I choose B. That's what I believe the manual is getting it.
4) What's the precentage of steel SAE10150?
A) 0.15%
B) 1.5%
C) 15%
I couldn't find a SEA chart in my book, so I looked at wiki, but wiki's list only starts from 201!
http://img5.imageshack.us/img5/4534/wikischart.jpg
Does anyone have a good link for me for a chart?
5) In a normalization process the cooling is done:
A) In oil
B) In air
C) In an oven
"Air" form what I was able to google (also couln't find that in my book)
6) Calculate the hardness level by Brinell’s method
A) Ball diameter – 10mm
B) Dent size – 4mm
C) Pressing Force – 3000 [N
From some reason am getting syntax error!
http://img839.imageshack.us/img839/6862/synerror.jpg
Uploaded with ImageShack.us
I finally got to exercise a bit of material science. I'd like to know whether what I'm saying correct or no. I also ran into two issues with Brinell's hardness calculations and SEA chart. I'd appreciate feedback! :) 1) Decreasing the size of the nucleus causes...
A) Increasing plasticity
B) Increasing strength
C) Thermic durability
D) A+B
I chose A. I do know for sure that decreasing the size of the nucelous makes the material stronger. It just makes more sense that when you have more little things to break
2) What's the correct sentence? (Based on the unit cell crsytal formation lattice)
A) Vanadium is more plastic than Magnesium
B) Vanadium is stronger than Magnesium
C) Vanadium is less hard than Magnesium in high temp'
Vanadium is a BCC. Mg is CPH.
CPH (and FCC) are denser than BCC. Therefor, I chooose B. Vanadium is stronger than Magnesium.
3) What thermal treatment is designed to unite steel?
A) Annealing
B) Homogenization
C) Tempering
I choose B. That's what I believe the manual is getting it.
4) What's the precentage of steel SAE10150?
A) 0.15%
B) 1.5%
C) 15%
I couldn't find a SEA chart in my book, so I looked at wiki, but wiki's list only starts from 201!
http://img5.imageshack.us/img5/4534/wikischart.jpg
Does anyone have a good link for me for a chart?
5) In a normalization process the cooling is done:
A) In oil
B) In air
C) In an oven
"Air" form what I was able to google (also couln't find that in my book)
6) Calculate the hardness level by Brinell’s method
A) Ball diameter – 10mm
B) Dent size – 4mm
C) Pressing Force – 3000 [N
From some reason am getting syntax error!
http://img839.imageshack.us/img839/6862/synerror.jpg
Uploaded with ImageShack.us
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