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Type Chung, S. C.; Han, S. Z.; Lee, H. M.; Kwon, H. S.
  Publication Coarsening Phenomenon of L1$_2$ Precipitates in Rapidly Solidified Al-3at.%(Ti,V,Zr) System Volume Journal Article
Pages 1995
  Abstract Scripta Metallurgica et Materialia  
  Corporate Author Scripta Metall. Mater.  
Publisher 33  
Editor 5
  Summary Language 687-693 Series Editor  
Abbreviated Series Title
  Series Issue ISSN  
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  Expedition Notes  
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refbase @ user 1028
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Han, S. Z.; Chung, S. C.; Lee, H. M. Alloy Design and Coarsening Phenomenon of L1$_2$ Precipitates in High-Temperature Al-2at.%(Ti,V,Zr) Systems Journal Article 1995 Metallurgical and Materials Transactions A 20 7 1633-1639 v-zr alloys ti behavior elements phase do22 l12 Aging works of two melt-spun Al-2 at pet (Ti,V,Zr) alloys showed that metastable Ll(2)Al(3)(Ti,V,Zr) precipitates were dominant and did not transform to stable DO23 ones: the average radius was 3 to 4 nm and the interparticle spacing was 10 to 30 nm at 698 K up to 400 hours. Coarsening kinetics was found to be very sluggish and was coincident with the low lattice mismatch. Due to the low coarsening rate and the high thermal. stability of the precipitated phase, rapidly solidified Al-Ti-V-Zr systems show promise as base of high-strength Al alloys for high-temperature applications. Times Cited: 7 Article English Cited References Count: 26 Rj768 refbase @ user 1169
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Han, S. Z.; Park, S. I.; Huh, J. S.; Lee, Z. H.; Lee, H. M. Lattice Matching of D0$_{23}$ and D0$_{22}$ Phases in Al-6at.%(Ti,V,Zr) Systems Journal Article 1997 Materials Science and Engineering A Mater. Sci. Eng. A 230 1-2 100-106 refbase @ user 1170
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Han, S. Z.; Rho, B. S.; Lee, H. M.; Choi, S. K. Effect of Alloyed Ti:Zr ratio on Phase Stability of Al$_{66}$Mn$_9$(Ti,Zr)$_{25}$ Intermetallic Compounds Journal Article 1996 Intermetallics 4 3 245-249 hardness phase stability compositional variation effects zirconium trialuminides l12 compounds cubic phases al3ti deformation behavior do22 al66ti25mn9 strength systems The tetragonal Al-3(Ti1-xZrx) phase is transformed by the addition of 9% Mn to the cubic L1(2)-type Al66Mn9(Ti1-xZrx)(25) with a small amount of second phases such as Al8Mn5 and Al2Zr still existing in the as-cast condition. Second phases disappear when intermetallic compounds are homogenized at 1000 degrees C for 24 h, and alloys are of the monolithic L1(2) phase with compositional variations still existent. The combined addition of Ti and Zr is found to reduce the hardness of intermetallic alloys compared to the addition of Ti or Zr alone. The Al66Mn9(Ti, Zr)(25) phase is found to be structurally stable but compositionally unstable. Korea Adv Inst Sci & Technol,Dept Mat Sci & Engn,Taejon 305701,South Korea Times Cited: 3 Article English Cited References Count: 22 Tx119 refbase @ user 1171
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Johnson, W. C.; Lee, J. K. The Elastic Field of an Inhomogeneous System Book Chapter 1982 Solid-State Phase Transformations 151-155 The Metallurgical Society of AIME Warrendale Aaronson, H. I.; Laughlin, D. E.; Sekerka, R. F.; Wayman, C. M. W.C. Johnson and J.K. Lee, "The elastic field of an inhomogeneous system," in Proc. Internat. Conf. on Solid-solid Phase Transformations, eds. H.I. Aaronson, D.E. Laughlin, R.F. Sekerka, and G.M. Wayman (TMS-AIME, 1982) pp. 151-155. refbase @ user 1253
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Kim, B. J.; Moon, K. I.; Lee, K. S. The Effect of the Third-Element Addition on the Fatigue Properties of Mechanically Alloyed Al-Ti Alloys Journal Article 1999 Journal of Alloys and Compounds 292 1-2 174-180 al-ti alloys al-ti-x (x=b, v, zr, ce) alloys fatigue properties mechanical alloying lattice-parameters AI-Ti-X (X=B, V, Zr, Ce) alloys were prepared by mechanical alloying and their fatigue properties were examined at room temperature, 300 degrees C and 400 degrees C. MA Al-Ti alloys showed fatigue strengths competitive with those of conventional precipitation hardened Al alloys (Al 7075, Al 2024) and the addition of third elements further improved the fatigue strength of MA alloys. As the temperature was increased to 300 degrees C and 400 degrees C, a decrease in fatigue strength was observed but the general trend in fatigue properties was the same as that at room temperature. The fatigue strength of AI-TI-X alloys, except for the Ce-added alloy, was enhanced compared with AI-Ti alloy because the third element addition reduced the lattice mismatch between Al and AI,Ti effectively and thus maintained the fine particle size of dispersoids. AI-Ti-X alloy showed the smallest precipitate size and the best room and high temperature fatigue strengths. The fatigue ratio of MA Al-Ti alloys was about 0.4 and improved slightly with temperature. The fracture mode of MA Al-Ti alloys was thought to be intergranular failures, in some cases involving also the interface between the matrix and the dispersoids. (C) 1999 Elsevier Science S.A. All rights reserved. Moon, K. I. Hanyang Univ, Dept Met Engn, Seoul 133791, South Korea Hanyang Univ, Dept Met Engn, Seoul 133791, South Korea Times Cited: 3 Article English Cited References Count: 17 253md refbase @ user 1279
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Lee, H. M. Design of High-Temperature High-Strength Al-Ti-V-Zr Alloys Journal Article 1990 Scripta Metallurgica et Materialia Scripta Metall. Mater. 24 12 2443-2446 Times Cited: 23 Article English Cited References Count: 21 El505 refbase @ user 1324
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Lee, H. M. Design of Al$_3$(Ti,V,Zr) Systems through Phase-Stability Calculations Journal Article 1992 Materials Science and Engineering A Mater. Sci. Eng. A 152 1-2 26-30 refbase @ user 1325
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Lee, H. M.; Lee, H. Site Fraction Behavior of Transition-Elements in Al$_3$(Ti,V,Zr) Phase Journal Article 1992 Calphad-Computer Coupling of Phase Diagrams and Thermochemistry 16 1 19-24 refbase @ user 1326
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Lee, H. M.; Lee, J.; Lee, Z. H. Lattice Misfit Variation of Al$_3$(Ti,V,Zr) in Al-Ti-V-Zr Alloys Journal Article 1991 Scripta Metallurgica et Materialia Scripta Metall. Mater. 25 3 517-520 coarsening behavior precipitation Times Cited: 18 Article English Cited References Count: 18 Ez877 refbase @ user 1327
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