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Article
Open AccessUltrahigh-temperature tensile creep of TiC-reinforced Mo-Si-B-based alloy
In this study, the ultrahigh-temperature tensile creep behaviour of a TiC-reinforced Mo-Si-B-based alloy was investigated in the temperature range of 1400–1600 °C at constant true stress. The tests were perfor...
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Article
Evolutionary pathway of pseudogenization of globin genes, α5 and β5, in genus Oryzias
Hemoglobin transports oxygen in many organisms and consists of α- and β-globin chains. Previously, using molecular phylogenetic analysis, we proposed that both α- and β-globins of teleost could be classified i...
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Article
Open AccessMorphological defects in native Japanese fir trees around the Fukushima Daiichi Nuclear Power Plant
After the accident at the Fukushima Daiichi Nuclear Power Plant (F1NPP) in March 2011, much attention has been paid to the biological consequences of the released radionuclides into the surrounding area. We in...
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Article
High-Temperature Compressive Properties of TiC-Added Mo-Si-B Alloys
High-temperature compressive properties of two TiC-added Mo-Si-B alloys with nominal compositions of Mo-5Si-10B-7.5TiC (70Mo alloy) and Mo-6.7Si-13.3B-7.5TiC (65Mo alloy) (at.%) were investigated. The alloys w...
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Article
Phase Equilibria, Microstructure, and High-Temperature Strength of TiC-Added Mo-Si-B Alloys
TiC was added to Mo-Si-B alloys using a conventional Ar arc-melting technique, and the phase equilibria, microstructure evolution, and high-temperature strength at 1673 K (1400 °C) were investigated. The prima...
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Article
Role of Thermal Vacancies on Temperature Dependence of Lattice Parameter and Elastic Moduli in B2-type FeAl
Temperature dependence of the lattice parameter and elastic moduli in Fe-40 and -43Al (at.%) was investigated by high temperature X-ray diffractometry (XRD) and the Electro-Magnetic Acoustic Resonance (EMAR) m...
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Article
Assessment of Titanium Aluminide Alloys for High-Temperature Nuclear Structural Applications
Titanium aluminide (TiAl) alloys exhibit high specific strength, low density, good oxidation, corrosion, and creep resistance at elevated temperatures, making them good candidate materials for aerospace and au...
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Chapter and Conference Paper
Development of Oxide Dispersion Strengthened Steels for High Temperature Nuclear Structural Applications
Oxide dispersion strengthened (ODS) steels are the most promising candidate materials for high temperature nuclear applications. Mechanical alloying and subsequent thermomechanical treatments are applied to ma...
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Article
Analysis of Vacancy Agglomeration Processes by Matusita’s Method for B2 FeAl
In this study, the exothermic DSC peaks observed in rapidly-solidified Fe-44.9at.%Al ribbons and water-quenched Fe-48.5at.%Al single crystals were analyzed by Matusita’s method in order to discuss the kinetics...
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Article
Creep Behavior and Degradation of Subgrain Structures Pinned by Nanoscale Precipitates in Strength-Enhanced 5 to 12 Pct Cr Ferritic Steels
Creep behavior and degradation of subgrain structures and precipitates of Gr. 122 type xCr-2W-0.4Mo-1Cu-VNb (x = 5, 7, 9, 10.5, and 12 pct) steels were evaluated during short-term and long-term static aging and c...
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Article
Suspected recurrent anaphylaxis in different forms during general anesthesia
We report on a patient who presented with recurrent severe shock during general anesthesia. The patient was a man scheduled for lung surgery whose first attack was a coronary spasm, which was followed by a sec...
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Article
Effect of Particle Size of Mo Solid Solution on Hardness of Mo5SiB2/Mo-Based Alloys
Three kinds of Mo-Si-B ternary alloys and a 1 at.% Al added Mo-Si-B alloy with the compositions near Mo-8.7 at.% Si-17.4 at.% B that is in the Mo5SiB2 and Mo two-phase compositional region were produced by Ar arc...
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Article
TEM Observation of Vacancy Clustering Process in FeAl Single Crystal
Nanoporous surfaces are formed in B2-type FeAl single crystals by quenching into iced water, followed by surface treatment and aging heat treatment. From our previous work, it was indicated that the nanoporous...
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Article
Increase in γ/α2 Lamellar Boundary Density and its Effect on Creep Resistance of TiAl Alloy
Several lamellar microstructures of a Ti-48 % Al alloy were made by changing heating rate in the α+ dual phase field, and their creep properties were investigated at 1150 K. Average spacing and average length ...
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Article
The Creep Behaviors of Two Fine-grained XD TiAl Alloys Produced by Similar Heat Treatments
The microstructural characteristics and creep behavior of two fine-grained XD TiAl alloys, Ti-45Al and 47Al–2Nb–2Mn+0.8vol%TiB2 (at%), were investigated. A nearly lamellar structure (NL) and two kinds of fully la...
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Article
Structure and developmental expression of hatching enzyme genes of the Japanese eel Anguilla japonica: an aspect of the evolution of fish hatching enzyme gene
We isolated seven cDNA clones from embryos of the Japanese eel Anguilla japonica. Each deduced amino acid sequence consisted of a signal peptide, a propeptide and a mature enzyme portion belonging to the astacin ...
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Article
Creep strength of magnesium-based alloys
The high-temperature creep resistance of magnesium alloys was discussed, with special reference to Mg-Al and Mg-Y alloys. Mg-Al solid-solution alloys are superior to Al-Mg solid-solution alloys in terms of cre...
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Article
Creep strength of magnesium-based alloys
The high-temperature creep resistance of magnesium alloys was discussed, with special reference to Mg-Al and Mg-Y alloys. Mg-Al solid-solution alloys are superior to Al-Mg solid-solution alloys in terms of cre...
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Article
Optimal placement of CVP catheter in paediatric cardiac patients
For correct monitoring of central venous pressure (CVP) the tip of the CVP catheter should be placed in the superior vena cava (SVC). Since there is no useful guide for the optimal depth of insertion of CVP ca...
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Article
Comparative Creep Properties of Single-Phase Intermetallics of the Ti-Al System
Creep characteristics of polycrystalline single-phase intermetallics, α2-Ti3Al and γ-TiAl, at 1100 K have been summarized to evaluate their relative strength at elevated temperature at three strain-rate levels, 1...
