The effect of pressure on hydrogen solubility in Zircaloy-4
H. E. Weekes, D. Dye, J. E. Proctor, D. S. Smith, C. Simionescu, T. J. Prior, M. R. Wenman
备注：
Updated in response to reviewer comments; results identical but discussion elaborated on some points. Accepted for publication in J. Nuclear Materials, 11 Jul 2019
The effect of pressure on the room temperature solubility of hydrogen in Zircaloy-4 was examined using synchrotron X-ray diffraction on small ground flake samples in a diamond anvil cell at pressures up to 20.9 GPa. Different combinations of hydrogen level/state in the sample and of pressure transmitting medium were examined; in all three cases examined, it could be concluded that pressure resulted in the dissolution of d hydrides and that interstitial hydrogen retards the formation of w Zr. A pressure of around 9 GPa was required to halve the hydride fraction. These results imply that the effect of pressure is thermodynamically analogous to that of increasing temperature, but that the effect is small. The results are consistent with the volume per Zr atom of the a, d and w phases, with the bulk moduli of a and d, and with previous measurements of the hydrogen site molar volumes in the a and d phases. The results are interpreted in terms of their implication for our understanding of the driving forces for hydride precipitation at crack tips, which are in a region of hydrostatic tensile stress on the order of 1.5 GPa.
Effects of mechanical stress, chemical potential, and coverage on hydrogen solubility during hydrogen-enhanced decohesion of ferritic steel grain boundaries: A first-principles study
Hydrogen uptake and hydride formation in Al$_x$CoCrFeNi high-entropy alloys: First-principles, universal-potential, and experimental study
Ruhr-Universität Bochum（波鸿鲁尔大学）；Max-Planck-Institut for Sustainable Materials（马克斯·普朗克可持续材料研究所）；University of Stuttgart（斯图加特大学）；Deutsches Elektronen-Synchrotron DESY（德国电子同步辐射中心）；Goethe University Frankfurt（法兰克福歌德大学）；Federal Institute for Materials Research and Testing (BAM)（联邦材料研究与测试研究所）
The role of \b{eta} pockets resulting from Fe impurities in hydride formation in titanium
工业纯钛在NaCl溶液中的腐蚀电位受微量Fe添加的显著影响，这导致在晶界三相点处出现亚微米袋状的\b{eta}相。此外，氢在六方密排α-Ti中的低溶解度使得钛合金易于由于应力腐蚀开裂而随后发生与位错相关的失效。我们分析了2级CP-Ti中\b{eta}袋的邻接晶界的α-α和α-\b{eta}截面，以及α-\b{eta}相界。Fe和H分配到\b{eta}中并在晶界处偏聚，但在α-\b{eta}相界处未观察到偏聚。相反，在α-\b{eta}相界处观察到显著的Ni（> 1 at %）积累。我们建议，\b{eta}口袋作为氢陷阱，促进形核和生长的沿晶界的CP-Ti。
Hydrogen (deuterium) dynamics and thermal stability in ion-irradiated platinum-hydride thin films synthesized at low temperature
Institute of Industrial Science, The University of Tokyo（东京大学工业科学研究所）；School of Materials and Chemical Technology, Institute of Science Tokyo（东京科学大学材料化学技术学院）；Department of Chemistry, The University of Tokyo（东京大学化学系）；Advanced Science Research Center, Japan Atomic Energy Agency（日本原子力研究开发机构先进科学研究中心）
