Previous in Forum: Galvanized Steel In Sheets EN 10346   Next in Forum: Deodorizing and Compacting Waste from Abaca Pulping
Close
Close
Close
10 comments
Associate

Join Date: Jan 2014
Location: Abu Dhabi - United Arab Emirates
Posts: 47

The Effects On The Ferrous Alloys

02/26/2014 2:50 AM

Hi Everyone,

Am studying material science, and I face this question.. Can anyone help me...

what are the significances of carbon, chromium and nickel on the microstructure and mechanical properties of ferrous alloys?

Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Power-User

Join Date: Aug 2010
Location: Wales, UK
Posts: 387
Good Answers: 18
#1

Re: The Effects On The Ferrous Alloys

02/26/2014 8:18 AM

Hi Conan21,

Google have the answers, Carbon makes it tougher, Chromium & Nickel increase the corrosion resistance & toughness.

John

__________________
Best advice I can give as you get older "Never miss an opportunity to relieve yourself"
Register to Reply Score 1 for Good Answer
Guru

Join Date: Feb 2011
Posts: 7045
Good Answers: 206
#2
In reply to #1

Re: The Effects On The Ferrous Alloys

02/26/2014 8:40 AM

you shouldn't have told him anything beyond Google

Register to Reply Score 1 for Good Answer
Power-User

Join Date: Aug 2010
Location: Wales, UK
Posts: 387
Good Answers: 18
#3
In reply to #2

Re: The Effects On The Ferrous Alloys

02/26/2014 8:53 AM

Hi Fredski,

You're right. I guess I'm just a nice guy and a bit (or maybe a lot) simple.

All the very best

John

__________________
Best advice I can give as you get older "Never miss an opportunity to relieve yourself"
Register to Reply
Guru
Safety - Hazmat - New Member United States - US - Statue of Liberty - New Member Engineering Fields - Chemical Engineering - Old Hand

Join Date: Mar 2011
Location: Lubbock, Texas
Posts: 14331
Good Answers: 161
#6
In reply to #3

Re: The Effects On The Ferrous Alloys

02/27/2014 9:24 AM

Fredski hasn't had his morning Joe yet, best to steer clear. He seems a bit grouchy today.

__________________
If it ain't broke, don't fix it. Just build a better one.
Register to Reply Score 1 for Off Topic
Guru

Join Date: Oct 2008
Posts: 42291
Good Answers: 1662
#4

Re: The Effects On The Ferrous Alloys

02/26/2014 10:33 AM

Tips for Posting on CR4:

  • Look for answers before you post. Search CR4 or use a search engine to see if you can find the answer to your question.

  • Then Google if you find nothing.

This information is all available by searching.

Register to Reply Score 1 for Good Answer
2
Guru
United States - Member - New Member Engineering Fields - Mechanical Engineering - New Member Engineering Fields - Petroleum Engineering - New Member Hobbies - Target Shooting - New Member

Join Date: Jan 2008
Location: Spring, Texas
Posts: 3403
Good Answers: 149
#5

Re: The Effects On The Ferrous Alloys

02/27/2014 7:48 AM

carbon is the STRONGEST ferrite former, chromium is the second. Nickel is an austentizing element. carbon makes steel strong by wedging itself into the interstitial spaces between the iron atoms in the crystalline structure adding strain to the atomic bonds. Chromium does as well to a lesser degree. Chromium also increases the corrosion resistance by forming a tightly adherant chromium oxide surface layer on the metal which prevents any further oxidation. Nickel toughens the alloy by increasing it malleability.

__________________
Who is John Galt?
Register to Reply Good Answer (Score 2)
Guru
Safety - Hazmat - New Member United States - US - Statue of Liberty - New Member Engineering Fields - Chemical Engineering - Old Hand

Join Date: Mar 2011
Location: Lubbock, Texas
Posts: 14331
Good Answers: 161
#7
In reply to #5

Re: The Effects On The Ferrous Alloys

02/27/2014 9:26 AM

Are you sure he will understand everything he will now plagiarize into his research paper for Metallurgy 101?

__________________
If it ain't broke, don't fix it. Just build a better one.
Register to Reply
Guru
United States - Member - New Member Engineering Fields - Mechanical Engineering - New Member Engineering Fields - Petroleum Engineering - New Member Hobbies - Target Shooting - New Member

Join Date: Jan 2008
Location: Spring, Texas
Posts: 3403
Good Answers: 149
#8
In reply to #7

Re: The Effects On The Ferrous Alloys

02/27/2014 9:45 AM

not my problem.... If he screws it up it is on him. if he doesn;t understand it, it will show up pretty quick. Those four elements are like THE basis of ferrous metallurgy. He will HAVE to know this stuff. he can fake it only so long.

__________________
Who is John Galt?
Register to Reply
Guru
Safety - Hazmat - New Member United States - US - Statue of Liberty - New Member Engineering Fields - Chemical Engineering - Old Hand

Join Date: Mar 2011
Location: Lubbock, Texas
Posts: 14331
Good Answers: 161
#9
In reply to #8

Re: The Effects On The Ferrous Alloys

02/27/2014 10:14 AM

Yep. Good luck out there to you. Appreciate your response.

__________________
If it ain't broke, don't fix it. Just build a better one.
Register to Reply
Commentator

Join Date: Oct 2013
Posts: 74
Good Answers: 2
#10

Re: The Effects On The Ferrous Alloys

02/27/2014 11:52 AM

Interstitial Site

In crystal structures there are small holes between the parent metal atoms. These holes in the crystal structure are called interstitial sites.

Substitutional defects

A substitutional defect is introduced, when one atom or ion is replaced by a different type of atom or ion.

Carbon

Carbon is the sthrongesht aushtinaite sthabiliser and it will initially increse and THEN decrease the gamma loop in Fe-Fe3C diagram due to precipitation kainektiks. It is a small atom and it can occupy small interstitial space in the crystal lattice.

Nickel

Nickel is a 'big' atom and it cannot occupy small interstitial space. So, Nickel will occupy substitutional defect sites. Nickel is an austenite stabiliser. It cannot form any kind of deleterious carbides. Nickel provides good toughness.

Chromium

Chromium is also substitutional solid solution atom. Chromium is a ferrite stabiliser and strong carbide former. Chromium in large quantities (Typically above 12 wt%) improve corrosion resistance of material by providing chromium oxide layer in austenitic stainless steel.

Hope this helps

Register to Reply
Register to Reply 10 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

Comments rated to be Good Answers:

These comments received enough positive ratings to make them "good answers".

Comments rated to be "almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, rate them!
Copy to Clipboard

Users who posted comments:

dolby (1); Fredski (1); James Stewart (3); jesw55 (2); lyn (1); Rorschach (2)

Previous in Forum: Galvanized Steel In Sheets EN 10346   Next in Forum: Deodorizing and Compacting Waste from Abaca Pulping

Advertisement