Re: [MW:29793] Austenitic stainless steel (A182-F316L) - Relationship between grain size and corrosion.

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THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015,

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

On Mon, Jul 8, 2019 at 8:46 AM Vinay Thattey <vinay.thattey@gmail.com> wrote:

Dear Swaryo ; 

I m not an expert in this subject .  

But it is known that  Intergranular corrosion of austenitic stainless steels is a   problem during welding and high temperature use. One of the major reasons for such intergranular corrosion is so-called sensitization, i.e. chromium depletion due to chromium carbide precipitation at grain boundaries.  Thus grain and grain boundaries definitely play a role in corrosion behavior. Literature ans studies shows that chromcarbide precipitation ,corrosion etc   depend on the crystallographic nature and atomic structure of the grain boundary .

On Thu, 4 Jul 2019 at 09:03, Sawryo <psypunky@gmail.com> wrote:

Dear sir,

In case A182-F316L, Is grain size related to corrosion?

Best regards

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