Near-threshold fatigue crack growth properties at elevated temperature for 1Cr-1Mo-0. 25V steel and 12Cr stainless steel

Journal Article · Fri Mar 31 23:00:00 EST 1989 · Metallurgical Transactions, (Section) A: Physical Metallurgy and Materials Science; (USA)

DOI:https://doi.org/10.1007/BF02667591· OSTI ID:5216294

Matsuoka, S; Takeuchi, E; Nishijima, S ^[1]; McEvily, A J ^[2]

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1. National Research Institute for Metals, Fatigue Testing Div., 2-3-12 Nakameguro, Meguroku, Tokyo (JP)
2. Connecticut Univ., Storrs, CT (USA). Dept. of Metallurgy

The authors discuss near-threshold fatigue crack growth properties investigated for a low-alloy steel 1Cr-1Mo-0.25V and a stainless steel SUS403 (13Cr) in the temperature range from 25 to 550{sup 0}C. Fatigue tests were conducted at frequencies of 0.5, 5, and 50 Hz, in a manner designed to avoid crack closure. The effective value of threshold stress intensity range increased with increasing temperature and with decreasing frequency for the Cr-Mo-V steel, whereas the effective threshold stress intensity range was independent of temperature and frequency in the case of the SUS403 steel. The observed threshold levels and crack growth behavior were closely related to the oxidation process of the bare surface formed at the crack tip during each load cycle.

• OSTI ID: 5216294
• Journal Information: Metallurgical Transactions, (Section) A: Physical Metallurgy and Materials Science; (USA), Journal Name: Metallurgical Transactions, (Section) A: Physical Metallurgy and Materials Science; (USA) Vol. 20A; ISSN MTTAB; ISSN 0360-2133
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
360104 -- Metals & Alloys-- Physical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CRACK PROPAGATION
FATIGUE
HIGH ALLOY STEELS
HIGH TEMPERATURE
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
MOLYBDENUM ALLOYS
OXIDATION
STAINLESS STEELS
STEELS
TEMPERATURE DEPENDENCE
THERMODYNAMICS
VANADIUM ALLOYS