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Anisotropic behavio...
Anisotropic behaviours of LPBF Hastelloy X under slow strain rate tensile testing at elevated temperature
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- Yu, Cheng-Han, 1992- (author)
- Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten
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- Peng, Ru Lin, 1960- (author)
- Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten
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- Lee, Tung Lik (author)
- ISIS Neutron Facility, STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, United Kingdom
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- Luzin, Vladimir (author)
- Australian Nuclear Science and Technology Organization (ANSTO), Lucas Heights, Australia; School of Engineering, The University of Newcastle, Callaghan, Australia
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- Lundgren, Jan-Erik (author)
- Siemens Energy AB, Finspång, Sweden
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- Moverare, Johan, Professor, 1973- (author)
- Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten
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(creator_code:org_t)
- ELSEVIER SCIENCE SA, 2022
- 2022
- English.
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In: Materials Science & Engineering. - : ELSEVIER SCIENCE SA. - 0921-5093 .- 1873-4936. ; 844
- Related links:
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https://doi.org/10.1...
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- To improve the understanding of high temperature mechanical behaviours of LPBF Ni-based superalloys, this work investigates the influence of an elongated grain structure and characteristic crystallographic texture on the anisotropic tensile behaviours in LPBF Hastelloy X (HX) at 700 °C. Two types of loading conditions have been examined to analyse the anisotropy related to the building direction (BD), including the vertical loading (loading direction//BD) and the horizontal loading (loading direction ⊥ BD). To probe the short-term creep behaviours, slow strain rate tensile testing (SSRT) has been applied to address the strain rate dependent inelastic strain accumulation. In-situ time-of-flight neutron diffraction upon loading was performed to track the anisotropic lattice strain evolution in the elastic region and the texture evolution in the plastic region. Combined with the post microstructure and fracture analysis, the anisotropic mechanical behaviours are well correlated with the different microstructural responses between vertical and horizontal loading and the different strain rates. A better creep performance is expected in the vertical direction with the consideration of the better ductility and the higher level of texture evolution.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
Keyword
- Creep
- Slow strain rate tensile testing (SSRT)
- Time-of-flight neutron diffraction
- Texture
- Ductility
- Elastic constants
Publication and Content Type
- ref (subject category)
- art (subject category)
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