Isotopic Tailoring to Optimize Studies for Radiation Resistance in Fusion Materials: Small Specimen Technology Development

1998 ◽  
Vol 540 ◽  
Author(s):  
S. Ohnuki ◽  
K. Shiba ◽  
Y. Kohno ◽  
A. Kohyama ◽  
J. P. Robertson ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Radiation Resistance ◽  
Technology Development ◽  
Small Specimen ◽  
Radiation Embrittlement ◽  
Single Variable ◽  
Fusion Materials ◽  
Single Disk ◽  
Commercial Steel ◽  
Shear Punch

AbstractSingle variable experiments are being conducted to study effects of H/He/dpa on properties based on isotopically tailored alloys. 54Fe has been used to prepare an isotopically tailored duplicate of the commercial steel F82H, and a small number of TEM disks have been irradiated in order to study radiation embrittlement. From single disk specimens, mechanical properties were obtained using a shear punch technique that produces a 1 mm blank from the 3 mm disk, and microstructural information was obtained from the 1 mm blanks thinned to electron transparency.

Irradiated Microstructures of Magnesium Aluminate Spinel and their Controlling Factors

1998 ◽  
Vol 540 ◽  
Author(s):  
C. Kinoshita ◽  
S. Matsumura ◽  
K. Yasuda ◽  
T. Soeda ◽  
M. Noujima
Keyword(s):  
Mechanical Properties ◽  
Radiation Resistance ◽  
Recent Progress ◽  
Controlling Factors ◽  
Magnesium Aluminate ◽  
Magnesium Aluminate Spinel ◽  
Void Swelling ◽  
Characteristic Features ◽  
Related Characteristic ◽  
Alpha Alumina

AbstractThis paper reviews our recent progress in study on the strong resistance of magnesium aluminate spinel to void swelling during irradiation, along with the related characteristic features of its radiation damage. Comparative experimental results on irradiated microstructures and mechanical properties in magnesium aluminate spinel and alpha-alumina are shown in terms of controlling factors of radiation resistance of the former crystal. It is experimentally shown that structural vacancies due to non-stoichiometry provide effective recombination sites for displaced cations to suppress the formation of interstitial loops. Decreased formation of interstitial loops enhances the further recombination of interstitials and vacancies and thereby the formation of voids.

Further Observations on A533-B Steel Plate Tailored for Improved Radiation Embrittlement Resistance

1976 ◽  
Vol 98 (2) ◽  
pp. 111-117 ◽  
Author(s):  
J. R. Hawthorne
Keyword(s):  
Radiation Resistance ◽  
Test Performance ◽  
Copper Content ◽  
Radiation Embrittlement ◽  
Copper Addition ◽  
Melt Composition ◽  
Impurity Elements ◽  
Irradiation Behavior ◽  
Embrittlement Resistance ◽  
Primary Melt

A series of advanced investigations on the radiation performance of four 6-in-thick plates from a large (30-ton) commercial melt of A533-B steel is described. The melt represented the first commercial scale demonstration test of improved radiation embrittlement resistance through the control (minimization) of selected residual impurity elements. Melt specifications emphasized the attainment of a low copper and phosphorus content; one half of the melt was modified, however, by a copper addition (0.03 percent Cu increased to 0.13 percent Cu). Initial plate tests described superior 550 F (288 C) radiation resistance, in terms of notch ductility retention, for the primary melt composition and verified the detrimental influence of impurity copper on irradiation behavior. Promising capability of the primary melt composition for very high fluence (∼2.5 × 1020 n/cm2 > 1 MeV) service is shown by the current investigations. In addition, a significant influence of copper content on radiation resistance is revealed for a broad range of exposure temperatures. A dependence of 650 F (343 C) postirradiation heat treatment response (notch ductility recovery) on copper content was also found. Charpy-V versus dynamic tear test performance and tensile strength trends with temperature are examined for low (<450 F, 121 C) and elevated (550 to 585 F, 288 to 307 C) temperature irradiation conditions.

An Evaluation of the Effect of Low Temperatures on Mechanical Properties of a Commercial Steel to be Used in the Arctic

1980 ◽  
Vol 8 (1) ◽  
pp. 42 ◽  
Author(s):  
KC Lieb ◽  
RT Horstman ◽  
B Power ◽  
RL Meltzer ◽  
MB Vieth ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Low Temperatures ◽  
The Arctic ◽  
Commercial Steel

10108 Mechanical Properties of Lead-free Solder Using Small Specimen

2014 ◽  
Vol 2014.20 (0) ◽  
pp. _10108-1_-_10108-2_
Author(s):  
Yusuke OOGURI ◽  
Tomoya KOBAYASHI ◽  
Shota TANAKA ◽  
Masayoshi TATENO
Keyword(s):  
Mechanical Properties ◽  
Lead Free ◽  
Lead Free Solder ◽  
Small Specimen ◽  
Free Solder

20117 Evaluation of Mechanical properties of Lead-Free Solder on Small Specimen

2013 ◽  
Vol 2013.19 (0) ◽  
pp. 219-220
Author(s):  
Yusuke OOGURI ◽  
Takashi YONEYAMA ◽  
Toshihiri HANAOKA ◽  
Masayoshi TATENO
Keyword(s):  
Mechanical Properties ◽  
Lead Free ◽  
Lead Free Solder ◽  
Small Specimen ◽  
Free Solder

scholarly journals Joint Effect of Steel Addition and Press-and-Sinter on the Properties of Low-Cost PM Ti Alloys

2018 ◽  
Vol 770 ◽  
pp. 248-254
Author(s):  
Leandro Bolzoni ◽  
Elisa Maria Ruiz-Navas ◽  
Elena Gordo
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Biomedical Applications ◽  
Low Cost ◽  
Physical And Mechanical Properties ◽  
Steel Powder ◽  
Joint Effect ◽  
Ti Alloys ◽  
Commercial Steel ◽  
Processing Techniques

Cheap alloying elements and creative processing techniques are a way forward to open up more industrial opportunities for Ti in sectors where it is not extensively applied yet, rather than in aerospace and biomedical applications. This study focuses on understanding the joint effect of using a commercial steel powder to add Fe to pure Ti and its processing by press-and-sinter on the behaviour of low-cost PM Ti alloys. It is found that the calibrated addition of steel permits to develop new low-cost Fe-bearing Ti alloys that can satisfactorily be produced using the blending elemental PM approach. Densification of the samples and homogenization of the chemical composition are enhanced by the high diffusivity of Fe. The low-cost α+β alloys reach comparable physical and mechanical properties to those of wrought-equivalent PM Ti alloys, such as Ti-6Al-4V, and are therefore promising candidates for load-bearing lightweight products.

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