Environmentally Assisted Cracking of Nickel Alloys - A Review

Conference · Mon Jul 12 04:00:00 EDT 2004

DOI:https://doi.org/10.1016/B978-008044635-6.50041-8· OSTI ID:15014464

Rebak, R

Nickel can dissolve a large amount of alloying elements while still maintaining its austenitic structure. That is, nickel based alloys can be tailored for specific applications. The family of nickel alloys is large, from high temperature alloys (HTA) to corrosion resistant alloys (CRA). In general, CRA are less susceptible to environmentally assisted cracking (EAC) than stainless steels. The environments where nickel alloys suffer EAC are limited and generally avoidable by design. These environments include wet hydrofluoric acid and hot concentrated alkalis. Not all nickel alloys are equally susceptible to cracking in these environments. For example, commercially pure nickel is less susceptible to EAC in hot concentrated alkalis than nickel alloyed with chromium (Cr) and molybdenum (Mo). The susceptibility of nickel alloys to EAC is discussed by family of alloys.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 15014464
• Report Number(s): UCRL-PROC-205678
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
CHROMIUM
CORROSION RESISTANT ALLOYS
DESIGN
HYDROFLUORIC ACID
MOLYBDENUM
NICKEL
NICKEL ALLOYS
STAINLESS STEELS