Skip to main content

The Consolidation Behavior of L12 Phase Al3Zr & (Al+12.5at%)3Zr Powders with Nanocrystalline Structure During Spark Plasma Sintering

  • Kyoung Il Moon (a1), Seung Chul Kim (a1) and Kyung Sub Lee (a1)

The spark plasma sintering (SPS) of L12 phase Al3Zr and (Al+12.5at.%Cu)3Zr powders with a nanocrystalline microstructure has been studied to produce bulk intermetallic compounds which maintain metastable structures such as L12 structure and nanocrystalline microstructure. The powders were prepared by 10 h planetary ball milling (PBM). Full-density L12 (Al+12.5at.%Cu)3 Zr intermetallic compounds were obtained by SPS for 0 min. at 600°C. The smallest grain size was obtained in the specimen prepared at 600°C for 0 min., which was 20-30 nm as confirmed by TEM observation. Accordingly, the highest micro-hardness, 989.5 HV, was obtained in the specimen and this value was three times higher than those of the specimens with micro grain sizes. Full density Al3Zr intermetallics were prepared by SPS at 700°C for 0 min.. However, their crystal structure was D023 and micro-hardness was 778.1 HV. By using SPS, the sintering time can be reduced within 10 min.

Hide All
1.Moon, K.I., Chang, K.Y., Lee, K.S., J. Alloys Comp., 312, 273 (2000).
2.Baker, H., Alloy Phase Diagram, ASM Handbook 10th edition Vol.III, (ASM International, Metal Park, Ohio, 1992) p.256.
3.Omori, M., Mater. Sci. Eng., A287, 183 (2000).
4.Cullity, B.D., Element of X-Ray Diffraction, 2nd edition, (AddisoWesley Publishing Company Inc., London, 1978) p. 102.
5.German, R. M., Iacocca, R. G., in Physical Metallurgy and Processing of Intermetallic Compound, edited by Stoloff, N. S., Sikka, V. K., (Chapman & Hall, New York, 1994) pp. 605654.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *


Full text views

Total number of HTML views: 0
Total number of PDF views: 4 *
Loading metrics...

Abstract views

Total abstract views: 63 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 22nd April 2018. This data will be updated every 24 hours.