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Murat Kirca
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Join Date: Mar 2014
Posts: 2

A Question About Elastic Modulus of Fe

03/24/2014 5:48 PM

Primarily, hi everyone. I am a postgraduate student in the field of Materials Science and Eng, in Turkey. Although I know a little English, I will try to express my question.

This is question that my teacher asked me. I will answer him in Thursday.

The Elastic Modulus of Fe is 270 GPa in the direction of 111.
Again, the elastic modulus of Fe is 180 GPa in the direction of 100.
But; It is used(taken) as 210 GPa during the design. Why?

If you can help me, I will appreciate you. Best regards.
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lyn
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Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#1

Re: A Question about Elastic Modulus of Fe

03/24/2014 6:55 PM

Elasticity, Stability and Ideal Strength of $\ beta $-SiC in pl
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SolarEagle
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Join Date: Mar 2007
Location: by the beach in Florida
Posts: 33392
Good Answers: 1817
#2

Re: A Question About Elastic Modulus of Fe

03/24/2014 9:37 PM

Probably has something to do with the angle of stress relative to the crystalline structure....

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Anonymous Poster #1
#3

Re: A Question About Elastic Modulus of Fe

03/25/2014 1:13 AM

Interesting one.
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dolby
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Join Date: Oct 2013
Posts: 74
Good Answers: 2
#4

Re: A Question About Elastic Modulus of Fe

03/25/2014 1:31 AM

Following links would provide some info. to find the answer.

http://en.wikipedia.org/wiki/Slip_(materials_science)

http://en.wikipedia.org/wiki/Miller_index

http://www.mse.ncsu.edu/research/zhu/Class-Teaching/MSE200/Lecture8-Sept21.pdf

http://www.rci.rutgers.edu/~tsakalak/CME407/HWch7.pdf
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Murat Kirca
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Join Date: Mar 2014
Posts: 2
#5

Re: A Question About Elastic Modulus of Fe

03/25/2014 3:08 AM

Although I can't find the answer, very thanks for helping.
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nick name
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Join Date: Mar 2007
Location: City of Light
Posts: 3943
Good Answers: 183
#6

Re: A Question About Elastic Modulus of Fe

03/25/2014 5:34 AM

The E= 210 is a MACRO module, 270 is a MICRO module referring to the crystal itself.

I think that this makes the difference.

In a piece crystals are not oriented thus the 210 value is related to the space distribution of crystals with respect to strain direction.
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Anonymous Poster (1); dolby (1); lyn (1); Murat Kirca (1); nick name (1); SolarEagle (1)

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