A Study on the VHCF Fatigue Behaviors and UNSM Effects of Hydrogen Attacked STS 304
- 1. Korea Research Institute of Standards and Science, Daejeon (Korea, Republic of)
- 2. Kyungpook National University, Daegu (Korea, Republic of)
- 3. Sun Moon University, Asan (Korea, Republic of)
Description
This study is to investigate the influence of hydrogen attack and UNSM on fatigue behaviors of STS 304. Fatigue endurance limit of untreated material and hydrogen treated one was the same at 400 MPa, and hydrogen embrittlement had little influence even though it contained about 8.1 times more hydrogen. Thus the sensitivity of hydrogen gas of this STS 304 material is very low. The fatigue endurance limit of the UNSM treated material rose by about 50 % compared with the untreated material and showed a tendency to increase by about 50 % as compared with the hydrogen treated material. After the UNSM treatment with IQ, IPF, KAM and phase diagram map by EBSD, the thickness of the nanoparticle surface layer affected by this treatment is about 112 μm.
Additional details
Publishing Information
- Journal Title
- Transactions of the Korean Society of Mechanical Engineers. A
- Journal Volume
- 42
- Journal Issue
- 6
- Series
- 24 refs, 13 figs, 4 tabs
- Journal Page Range
- p. 541-550
- ISSN
- 1226-4873
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 50048063
- Subject category
- S42: ENGINEERING;
- Descriptors DEI
- EMBRITTLEMENT; FATIGUE; HYDROGEN; NANOPARTICLES; SENSITIVITY; STAINLESS STEEL-304; SURFACES; THICKNESS
- Descriptors DEC
- ALLOYS; AUSTENITIC STEELS; CARBON ADDITIONS; CHROMIUM ALLOYS; CHROMIUM-NICKEL STEELS; CORROSION RESISTANT ALLOYS; DIMENSIONS; ELEMENTS; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; MATERIALS; MECHANICAL PROPERTIES; NICKEL ALLOYS; NONMETALS; PARTICLES; STAINLESS STEELS; STEEL-CR19NI10; STEELS; TRANSITION ELEMENT ALLOYS