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Anonymous Poster #1

Ductility and Toughness

09/27/2012 12:20 AM

How do we differentiate between Ductility and Toughness. Can I get some simple explanation with pictures.
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Anonymous Poster #2
#1

Re: Ductility and Toughness

09/27/2012 2:18 AM

Did you google it?

Wikipedia is a good starting source for this.

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

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

Is this kind of a administrator scheme to "raise" the level of questions in CR4?

its about the 4th: "What is the difference..." question which is easily answered by Wiki or google. Whats the matter?
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byalamanchili
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#4
In reply to #1

Re: Ductility and Toughness

09/28/2012 12:31 AM

I agree.
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lyn
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#2

Re: Ductility and Toughness

09/27/2012 3:24 PM

It is impossible to characterize these two terms with pictures.
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MUKULMAHANT
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#3
In reply to #2

Re: Ductility and Toughness

09/27/2012 10:55 PM

Agree fully.

Semantics -- not Quantifiable!
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Hilton
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#5

Re: Ductility and Toughness

09/28/2012 2:49 AM

We could differentiate if there was relationship between the two...in this case there is none. eg Iron can be ductile, but not tough
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MUKULMAHANT
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#6
In reply to #5

Re: Ductility and Toughness

09/28/2012 3:49 AM

Agree there are nuances .

Ductile MATERIAL -- Ductile Iron --Ductile Brass

Carburized - surface hardened machete or Axe is TOUGH .

Also TOUGH are the Torsion Bars in Vehicle Suspensions - hardened at the Splines.
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Janissaries
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#7

Re: Ductility and Toughness

09/28/2012 10:46 AM

Ductility is how well a hard material can be formed.

Toughness is how durable material can stand stress.

Aluminum is tough, however say for instance Aluminum sheet metal:

5052 Aluminum Sheet can be formed without breaking at the bend. It is Ductile.

2024 Aluminum when bent too far will break. It is not very Ductile.

Both can be used in the same environment.

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silvCrow
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#8

Re: Ductility and Toughness

09/28/2012 11:46 AM

this sounds like home work to me.

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miklosh
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#9

Re: Ductility and Toughness

09/28/2012 12:54 PM

So if you take Anon#2's advice and google these, you will find that there is some relationship between the two:

"Toughness requires a balance of strength and ductility.[1]", roughly explained as:

Strong + Ductile = High-Toughness
Strong + Brittle = Low-Toughness

where:
Toughness is measured by the total Energy absorbed before fracture;
Ductility/Plasticity is measured by the ability to deform before fracture;
Strength is measured by the Force required to fracture;
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LoganA
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#10
In reply to #9

Re: Ductility and Toughness

09/28/2012 1:13 PM

Thanks! that was easy to understand
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Anonymous Poster #2
#11
In reply to #9

Re: Ductility and Toughness

10/01/2012 10:06 PM

You've been following my links and came up with a quick explanation which almost looks graphical. Would give you 2 GA if I could. Thanks.
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Anonymous Poster (2); byalamanchili (1); Hilton (1); Janissaries (1); LoganA (1); lyn (1); miklosh (1); MUKULMAHANT (2); silvCrow (1)

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