Effects of hydrogen on the mixed mode I/III toughness of a high-purity rotor steel

Journal Article · Tue Jun 01 00:00:00 EDT 1993 · Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States)

DOI:https://doi.org/10.1007/BF02668213· OSTI ID:6209046

Kumar, A M; Hirth, J P ^[1]; Moody, N R; Gordon, J A ^[2]

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1. Washington State Univ., Pullman (United States)
2. Advanced Silicon Materials Inc., Moses Lake, WA (United States)

Recently, the authors reported the effects of hydrogen on the mixed mode 1/111 toughness of a high-purity Ni-Cr-Mo-V rotor steel. The steel was tested both in the uncharged and hydrogen-charged conditions. It was shown that the presence of hydrogen degraded the overall J toughness incrementally by approximately 30 pct, with the degree of degradation increasing with the mode III component. Also, in the uncharged condition, the J toughness decreased to a minimum as the mode I/III ratio decreased and increased again for pure mode III loading. However, the authors could not determine if a similar variation of toughness was displayed by the hydrogen-charged steel, because the pure mode III tests could not be completed at that time. The pure mode III tests are now complete, and these new results are presented in this communication. The chemical composition of the steel used in these studies was 0.25C-3.7Ni-1.7Cr-0.4Mo-0.12V-0.05Mn- 0.02Si-0.003(P,Sn,As)-O.002Sb-0.0015 S (wt pct).

• OSTI ID: 6209046
• Journal Information: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States), Vol. 24A:6; ISSN 0360-2133
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HYDROGEN
METALLURGICAL EFFECTS
NICKEL-CHROMIUM STEELS
FRACTURE PROPERTIES
ANTIMONY ADDITIONS
ARSENIC ADDITIONS
CARBON ADDITIONS
CHEMICAL COMPOSITION
DAMAGE
EXPERIMENTAL DATA
MANGANESE ADDITIONS
MOLYBDENUM ADDITIONS
PHOSPHORUS ADDITIONS
ROTORS
SILICON ADDITIONS
SULFUR ADDITIONS
TIN ADDITIONS
VANADIUM ADDITIONS
ALLOYS
ANTIMONY ALLOYS
ARSENIC ALLOYS
CHROMIUM ALLOYS
DATA
ELEMENTS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MANGANESE ALLOYS
MECHANICAL PROPERTIES
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL STEELS
NONMETALS
NUMERICAL DATA
SILICON ALLOYS
STEELS
TIN ALLOYS
VANADIUM ALLOYS
360103* - Metals & Alloys- Mechanical Properties