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Generation of intergranular strains during high temperature creep fatigue loading of 316H stainless steel.
- Source :
-
Materials at High Temperatures . Nov2014, Vol. 31 Issue 4, p378-382. 5p. 1 Chart, 7 Graphs. - Publication Year :
- 2014
-
Abstract
- This paper investigates the development of intergranular strains and stresses in AISI type 316H austenitic stainless steel during cyclic loading at high temperature. Isothermal cyclic creep tests at 650°C with 2 h displacement controlled creep dwells at maximum strain are conducted with in situ neutron diffraction monitoring at a time of flight facility. The evolution of intergranular strains in five independent { hkl} grain families were successfully measured during consecutive cycles. The grain family with {111} lattice planes normal to the loading direction exhibited linearly reversible behaviour with cyclic load whereas the {200} planes deformed in a non-linear manner forming a hysteresis loop. Intergranular strains during the first dwell remained unchanged with time, but relaxed with time during later dwells. The start of dwell intergranular strains increased from cycle 1 to cycle 2, but markedly less moving from cycle 2 to cycle 3. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09603409
- Volume :
- 31
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Materials at High Temperatures
- Publication Type :
- Academic Journal
- Accession number :
- 99471628
- Full Text :
- https://doi.org/10.1179/0960340914Z.00000000045