Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10633992 | Scripta Materialia | 2012 | 4 Pages |
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 ε-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.
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Authors
Zhiyang Wang, Ulf Garbe, Huijun Li, Andrew J. Studer, Robert P. Harrison, Mark D. Callaghan, Yanbo Wang, Xiaozhou Liao,