NUCAPT Literature Database

From NUCAPT

81–90 of 181 records found matching your query (RSS):


Select All    Deselect All
 |   | 
Details
   print
  Records Links
Type Park, Kyung-Tae; Hwang, Duck-Young; Lee, Young-Kook; Kim, Young-Kuk; Shin, Dong Hyuk
  Publication High strain rate superplasticity of submicrometer grained 5083 Al alloy containing scandium fabricated by severe plastic deformation Volume Journal Article
Pages (down) 2003
  Abstract Materials Science and Engineering A  
  Corporate Author Mater. Sci. Eng. A  
Publisher 341  
Editor 1-2
  Summary Language 273-281 Series Editor High strain rate superplasticity; 5083 Al alloy; Scandium; Severe plastic deformation; Ultrafine grains  
Abbreviated Series Title High strain rate superplasticity (HSRS) was obtained in a commercial 5083 Al alloy by introducing a ultrafine grained structure of 0.3 small mu, Greekm through severe plastic deformation and by adding a dilute amount of scandium (Sc) as a microstructure stabilizer. Tensile tests were carried out on the as-processed sample at temperatures of 623823 K and initial strain rates of 1×10−31×100 s−1. The maximum elongation to failure of 740% was obtained at 773 K and 1×10−2 s−1. HSRS of the alloy was attributed to the combined effects of dynamic recrystallization and preservation of fine recrystallized grains by the presence of Sc. The mechanical behavior of the alloy at 773 K was characterized by a sigmoidal behavior in a plot of stress vs strain rate in the double logarithmic scale. The origin of the sigmoidal behavior was discussed in terms of microstructural evolution during superplastic deformation. An examination of the fractured samples revealed that failure occurred in a brittle manner related to cavitation rather than necking. Cavity stringers were formed parallel to the tensile axis by interlinkage of jagged-shaped isolated cavities along grain boundaries aligned to the tensile axis.
  Series Issue ISSN  
Medium
  Expedition Notes  
Call Number  
Contribution Id  
Serial URL ISBN  
no NU @ karnesky @ 585
Permanent link to this record
 

 
Lee, J. S.; Liu, K. S.; Chuang, F. Y.; Sun, C. Y.; Huang, C. M.; Lin, I. N. Effect of Au buffer on the field emission characteristics of chemical vapor deposited diamond films Journal Article 1997 Applied Surface Science Appl. Surf. Sci. 113-114 264-268 Field Emission no 2446
Permanent link to this record
 

 
Kim, I. - S.; Hunn, J. D.; Hashimoto, N.; Larson, D. J.; Maziasz, P. J.; Miyahara, K.; Lee, E. H. Defect and void evolution in oxide dispersion strengthened ferritic steels under 3.2 MeV Fe+ ion irradiation with simultaneous helium injection Journal Article 2000 Journal of Nuclear Materials J. Nucl. Mater. 280 264-274 no 9024
Permanent link to this record
 

 
Bakhtizin, R. Z.; Valeev, V. G. Microroughness field emission electron energy distribution and electron-phonon interaction spectroscopy near the metal surface Journal Article 1988 Physica Status Solidi A Phys. Stat. Sol. A 108 1 251-255 Field Emission Field electron emission is considered from microtips on the metal surface. The possibility is shown of field emission spectroscopy of electron-phonon interaction near the emitting surface and the influence is studied of an increase in the surface potential barrier transparency by application of a weak high-frequency field altering the character of the field electron energy distribution in such a system. no 4012
Permanent link to this record
 

 
Park, Jin Ho; Kim, Jeong Kil; Lee, Bong Ho; Kim, Sang Seok; Kim, Kyoo Young Three-dimensional atom probe analysis of intergranular segregation and precipitation behavior in Ti-Nb-stabilized low-Cr ferritic stainless steel Journal Article 2013 Scripta Materialia 68 5 237-240 3-D atom probe; Intergranular corrosion; Segregation; Precipitation; Stainless steel Sequential phenomena of intergranular segregation and precipitation in Ti-Nb-stabilized 11 wt.% Cr ferritic stainless steel have been investigated. During aging, C and Ti diffuse into the grain boundary before Nb and Cr and form TiC preferentially. The solute Cr atoms segregate along the grain boundary, consequently resulting in Cr depletion in the vicinity of the grain boundary. 1359-6462 no NU @ karnesky @ 11426
Permanent link to this record
 

 
Jung, J. H.; Ju, B. K.; Lee, Y. H.; Park, K. C.; Jang, J.; Jung, Y. H.; Kim, C. J.; Oh, M. H. Emission stability of DLC coated metal-tips FEA Journal Article 1996 Int. Vac. Microelectron. Conf., 9th (1996), 231-234 Publisher: Nevskii Kur'er, St. Petersburg, Russia 231-234 Field Emission no 2004
Permanent link to this record
 

 
Ju, B. - K.; Park, H. - W.; Lee, Y. H.; Chung, I. - J.; Haskard, M. R.; Park, J. - H.; Oh, M. H. Field emission properties of Mo-coated Si field emitter arrays and formation of molybdenum silicide Journal Article 1996 Int. Vac. Microelectron. Conf., 9th (1996), 221-225 Publisher: Nevskii Kur'er, St. Petersburg, Russia. 221-225 Field Emission no 2003
Permanent link to this record
 

 
Rogozhkin, S.; Aleev, A.; Zaluzhnyi, A.; Kuibida, R.; Kulevoi, T.; Nikitin, A.; Orlov, N.; Chalykh, B.; Shishmarev, V. Effect of irradiation by heavy ions on the nanostructure of perspective materials for nuclear power plants Journal Article 2012 The Physics of Metals and Metallography 113 2 200-211 Chemistry and Materials Science An imitation experimental technique on the irradiation with heavy ions of structural materials of nuclear power plants using tomographic atom probe analysis has been elaborated. The scheme of irradiation of specimens for atom probe analysis has been realized on a MEVVA ion source of an TIPr accelerator (ITEP) with ion energy 75 keV per charge. Test experiments with irradiation and analysis of samples of the EK-181 steel by aluminum ions to a fluence of ~2 × 10 15 ion/cm 2 have been performed. Experiments on the Fe-ion irradiation of the samples of ODS EUROFER perspective steel for fission and fusion reactors to different damaging doses have been carried out. The analysis of distribution of different chemical elements in the volumes tested has revealed that under ion irradiation a change in the composition of nanosized clusters, which are present in the initial material takes place. Comparison of the data obtained with the results of reactor irradiation of the ODS EUROFER steel has been carried out. These data testify a correspondence between nanoscale changes in the steels oxide dispersion strengthened in imitation experiments and under the conditions of reactor irradiation. MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC. 0031-918x no NU @ karnesky @ 11334
Permanent link to this record
 

 
Jung, J. H.; Ju, B. K.; Lee, Y. H.; Jang, J.; Oh, M. H. Enhancement of electron emission efficiency and stability of molybdenum-tip field emitter array by diamond like carbon coating Journal Article 1997 IEEE Electron Device Lett. 18 197-199 Field Emission no 3140
Permanent link to this record
 

 
Donders, P. J.; Lee, M. J. G. Thermal field emission and thermal photofield emission from tungsten (110) Journal Article 1986 Surface Science Surf. Sci. 175 197-214 Field Emission no 3528
Permanent link to this record
Select All    Deselect All
 |   | 
Details
   print

Personal tools
Seidman Group
Atom-Probe Tomography
Search
Quick Search: