Estimating The Elastic Properties Of An Alloy
Estimating The Elastic Properties Of An Alloy
(OP)
I am trying to estimate the elastic properties of several alloys as accurately but simply as possible. I am a computer engineer not a materials engineer, so I am struggling here!
I have heard that the youngs modulus of an alloy may not differ greatly from those of its elements.
Does this mean that I can calculate the youngs modulus proportionately based on the quantities of each element in a given alloy?
eg:
bronze composed from
88% copper, 12% tin
128 GPa copper, 50 GPa tin
=(0.88*128)+(0.12*50)
=112,64+6
=118.64 GPa bronze young's modulus
If so, would I also be able to calculate the Poisson Ratio in the same way, or is this harder because of the way the different elements bond in the alloy at the molecular level.
If this is too simple, then what are the best methods of estimating youngs modulus and poisson ratio of an alloy based on its composite elements, or is this not possible with any degree of accuracy?
Thanks for reading!
I have heard that the youngs modulus of an alloy may not differ greatly from those of its elements.
Does this mean that I can calculate the youngs modulus proportionately based on the quantities of each element in a given alloy?
eg:
bronze composed from
88% copper, 12% tin
128 GPa copper, 50 GPa tin
=(0.88*128)+(0.12*50)
=112,64+6
=118.64 GPa bronze young's modulus
If so, would I also be able to calculate the Poisson Ratio in the same way, or is this harder because of the way the different elements bond in the alloy at the molecular level.
If this is too simple, then what are the best methods of estimating youngs modulus and poisson ratio of an alloy based on its composite elements, or is this not possible with any degree of accuracy?
Thanks for reading!





RE: Estimating The Elastic Properties Of An Alloy
RE: Estimating The Elastic Properties Of An Alloy
So does that mean that an alloy of copper (face-centered cubic structure - FCC) and silver (also FCC) can be calculated simply as above, but that tungsten (body-centered cubic - BCC) and silver (FCC) cannot be? Or is that too much of a simplification?
RE: Estimating The Elastic Properties Of An Alloy
Just look up the specific alloys that you are interested in. manufacturers data sheets will have modulus and other physical property data.
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Plymouth Tube
RE: Estimating The Elastic Properties Of An Alloy
RE: Estimating The Elastic Properties Of An Alloy
They are materials used in the jewelry trade such as gold alloys (gold alloyed with copper/silver). Perhaps Matweb is biased towards industrial/research materials.
I can find the alloys in Matweb, but the poisson ratio and youngs modulus isn't included for any of them.
Gold, Au; 18K, Yellow (UNS P00255)
Gold, Au; 14K, Yellow (UNS P00180)
Gold, Au; 10K, Yellow (UNS P00115)
Gold, Au; 18K, Green (UNS P00280)
Gold, Au; 14K, Green (UNS P00180)
Gold, Au; 10K, Green (UNS P00140)
Gold, Au; 18K, Red (UNS P00285)
Gold, Au; 14K, Red (UNS P00170)
Gold, Au; 10K, Red (UNS P00145)
Are there any other materials references you can think of that might have the elastic properties for these alloys?
RE: Estimating The Elastic Properties Of An Alloy
FAQ330-1441: Why is the elastic modulus relatively insensitive to changes in chemistry/heat treatment/coldwork?
Maui
www.EngineeringMetallurgy.com
RE: Estimating The Elastic Properties Of An Alloy
I would look them up for you but I am on the road.
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Plymouth Tube