Published October 2018 | Version v1
Miscellaneous Metadata-only

Thermodynamic Analysis for Sensitization of Stainless Steel Welding Zone in Nuclear Power Plant Piping System

Creators

  • 1. Korea Institute of Nuclear Safety, Daejeon (Korea, Republic of)
  • 2. Korea Institute of Industrial Technology, Jeonju (Korea, Republic of)

Description

The sensitization on surface of austenitic stainless steel was generated from chrome carbide formation in grain boundary. Corrosion and pitting do happen actively in the Cr-depleted zone so that it has a close relation with the LOCA in the case of primary system. In order for the stainless steel to increase the intergranular corrosion resistance, the carbon content in stainless steel must be decreased or the solution treatment of Cr-carbide could be carried out. The thermodynamic calculation is needed for the resistance improvement with alloying element or the optimum temperature of solution treatment. Sensitization analysis through the equilibrium phase diagram and phase fraction calculation with applying FactSage. Based in thermodynamic analysis with FactSage, carbide formation mechanism related to sensitization could be investigated for the purpose of intergranular corrosion resistance in stainless steel. .

Part of:
Proceedings of the KNS 2018 Fall Meeting

Additional details

Identifiers

URL
https://www.kns.org;

Publishing Information

Publisher
KNS
Imprint Place
Daejeon (Korea, Republic of)
Imprint Title
Proceedings of the KNS 2018 Fall Meeting
Imprint Pagination
vp.
Journal Page Range
[3 p.]

Conference

Title
2018 Fall Meeting of the KNS
Dates
24-26 Oct 2018
Place
Yeosu (Korea, Republic of)

INIS

Country of Publication
Korea, Republic of
Country of Input or Organization
Korea, Republic of
INIS RN
50060343
Subject category
S22: GENERAL STUDIES OF NUCLEAR REACTORS;
Resource subtype / Literary indicator
Conference, Non-conventional Literature
Descriptors DEI
COMPUTER CALCULATIONS; CORROSION; CORROSION RESISTANCE; NUCLEAR POWER PLANTS; OPTIMIZATION; PIPES; SENSITIVITY; STAINLESS STEELS; THERMODYNAMICS; WELDING
Descriptors DEC
ALLOYS; CARBON ADDITIONS; CHEMICAL REACTIONS; FABRICATION; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; JOINING; NUCLEAR FACILITIES; POWER PLANTS; STEELS; THERMAL POWER PLANTS; TRANSITION ELEMENT ALLOYS; TUBES

Optional Information

Notes
23 refs, 5 figs, 2 tabs