Load partitioning between single bulk grains in a two-phase duplex stainless steel during tensile loading.
The lattice strain tensor evolution for single bulk grains of austenite and ferrite in a duplex stainless steel during tensile loading to 0.02 applied strain has been investigated using in situ high-energy X-ray measurements and finite-element modeling. Single-grain X-ray diffraction lattice strain data for the eight austenite and seven ferrite grains measured show a large variation of residual lattice strains, which evolves upon deformation to the point where some grains with comparable crystallographic orientations have lattice strains different by 1.5 x 10{sup -3}, corresponding to a stress of -300MPa. The finite-element simulations of the 15 measured grains in three different spatial arrangements confirmed the complex deformation constraint and importance of local grain environment.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); Korea Research Foundation; Korean Government
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 977367
- Report Number(s):
- ANL/XSD/JA-65710; ACMAFD; TRN: US201009%%714
- Journal Information:
- Acta Materialia, Vol. 58, Issue 2 ; Jan. 2010; ISSN 1359-6454
- Country of Publication:
- United States
- Language:
- ENGLISH
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