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Synchrotron X-Ray D...
Synchrotron X-Ray Diffraction Study of Texture Evolution in 904L Stainless Steel under Dynamic Shock Compression
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- Li, N (författare)
- Beijing Institute Technology
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- Wang, Y D (författare)
- Beijing Institute Technology
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- Peng, Ru (författare)
- Linköpings universitet,Konstruktionsmaterial,Tekniska högskolan
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- Sun, X (författare)
- Pacific NW Natl Lab
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- Ren, Y (författare)
- Argonne Natl Lab
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- Wang, L (författare)
- Beijing Institute Technology
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- Cai, H N (författare)
- Beijing Institute Technology
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(creator_code:org_t)
- 2010-07-20
- 2011
- Engelska.
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Ingår i: METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE. - : Springer Science Business Media. - 1073-5623. ; 42A:1, s. 81-88
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The influence of strain rate on development of deformation texture under a dynamic shock compression of a 904L stainless steel was quantitatively investigated using synchrotron X-ray diffraction and crystallographic orientation distribution function (ODF) analysis. The Split-Hopkinson Pressure Bar (SHPB) technique was used to generate a high strain rate of andgt; 10(3) s(-1) for preparing the deformed samples. Starting with an almost random texture in a solution treatment condition, the deformed material developed several typical texture components, such as Goss texture and Brass texture. Compared to the texture components displayed in the state of quasi-static compression deformation, it was found that the high-speed deformation generated much weaker texture components. In combination with the change in microstructures observed by electron backscattering diffraction (EBSD) and the transmission electron microscopy (TEM) technique, the high-energy X-ray diffraction provides a powerful tool for characterizing the strain-rate dependence of grain rotation at each stage of deformation. The deformation heterogeneity evident in our experiment can be explained by a transition of deformation mechanism from the dislocation/twin-dominated mode to a shear-band-dominated one with increasing strain rate.
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- TECHNOLOGY
- TEKNIKVETENSKAP
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