iMechanica - For metals, when will the elastic modulus be changed? - Comments

Hello,ajayp, I've read your blog,thank you.

flong208 — Sat, 27 Jun 2009 15:25:55 -0400

Hello,ajayp, I've read your blog,thank you.

but, will the case hardening Carburizing and nitriding treatment change

1.) The atomic microstructure
2.) The interatomic bonds.

if yes,how will the E be changed?

Read my postion on chnage

Amit Pandey — Fri, 26 Jun 2009 14:22:55 -0400

Read my postion on change in elastic modulus if it helps.

http://imechanica.org/node/5689

NDE Residual Stress

ennio curto — Fri, 26 Jun 2009 11:19:22 -0400

You read my topic and after, you can send to me a message or comment.

Best regards.

Ennio Curto.

For metals, when will the elastic modulus be changed?

flong208 — Thu, 25 Jun 2009 08:09:32 -0400

I have a question, for the same metal material, when will the elastic modulus will be changed? in another words, in what kind of processing or machine condition will the elastic modulus be changed? for example, to machine elements(gear, bearing ...), when the part surface is case hardened,will the elastic modulus be changed? if not, how can the difference of hardness between case hardened surface and without hardened substrate be reflected in FEM analysis? how can the case hardened surface parameters affect the contact stress when two part are brought to contact?

and a further question about this topic is will Carburizing and nitriding treatment change the elastic modulus of metals?

Thank you, for you help very much!