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Hydrogen-induced microstructure, texture and mechanical property evolutions in a high-pressure torsion processed zirconium alloy
- Source :
- Scripta Materialia. 67:752-755
- Publication Year :
- 2012
- Publisher :
- Elsevier BV, 2012.
-
Abstract
- The gaseous hydriding-induced evolutions of the microstructure, texture and mechanical properties of Zircaloy-4 processed by high-pressure torsion (HPT) were assessed. Much δ-ZrH1.66 precipitation at 15 atm (21%) incurred significant hardening of vacuum-annealed HPT samples, and pure e-ZrH2 obtained at 20 atm showed a superior microhardness of 470 HV0.3 and a low fracture toughness of 0.63 MPa m1/2. The δ-hydrides presented strong (1 1 1) texture and followed the (0 0 0 1)α-Zr//{1 1 1}δ-ZrH1.66 orientation relationship with the α-Zr matrix. During hydriding, α-Zr recrystallization texture was developed from the initial deformation texture.
- Subjects :
- Zirconium
Materials science
Mechanical Engineering
Metallurgy
Zirconium alloy
Metals and Alloys
Recrystallization (metallurgy)
chemistry.chemical_element
Condensed Matter Physics
Microstructure
Indentation hardness
Fracture toughness
chemistry
Mechanics of Materials
Hardening (metallurgy)
General Materials Science
Hydrogen embrittlement
Subjects
Details
- ISSN :
- 13596462
- Volume :
- 67
- Database :
- OpenAIRE
- Journal :
- Scripta Materialia
- Accession number :
- edsair.doi...........6a9f7834a919ab238f7d226dfdc3fe94