Propagation of stress corrosion cracks of 26Cr-1Mo ferritic stainless steels in a hot chloride solution

Journal Article · Sat Aug 01 04:00:00 EDT 1992 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(92)90523-H· OSTI ID:7280076

Kwon, H S ^[1]

---

1. Dept. of Materials Science and Engineering, Korea Advanced Inst. of Science and Technology, 373-1 Kusong-dong, Yusung-gu, Taejon 305-701 (KR)

Austenitic stainless steels have been extensively used in modern process equipment for the chemical industry. However, they have been troubled with the problems of stress corrosion cracking (SCC), pitting and crevice corrosion in chloride environments. The low interstitial ferritic stainless steels containing 26 {approx} 29% Cr and 1 {approx} 4% Mo have proved a practical solution to many chloride SCC problems. These relatively low strength ferritic stainless steels can be made to crack by hydrogen charging. susceptibility to these hydrogen-induced failures is also sensitive to composition and to prior thermal and mechanical treatment. It is the purpose of this paper to examine the hydrogen participation in the crack propagation of 26Cr-1Mo alloys in a hot chloride solution thereby clarifying the failure mechanism of these materials.

• OSTI ID: 7280076
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 27:3; ISSN SCRME
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CHROMIUM ALLOYS
CHROMIUM BASE ALLOYS
CORROSION
CRACK PROPAGATION
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DISPERSIONS
ELEMENTS
FAILURES
FERRITIC STEELS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN
INTERSTITIALS
IRON ALLOYS
IRON BASE ALLOYS
MIXTURES
MOLYBDENUM ALLOYS
NONMETALS
POINT DEFECTS
SOLUTIONS
STEELS
STRESS CORROSION