Formation of Cu-Zr-Ti amorphous alloys with significant supercooled liquid region by mechanical alloying

P. Y. Lee, C. K. Lin, G. S. Chen, R. F. Louh, K. C. Chen

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)

Abstract

The amorphous Cu90-xZrxTi10 (x=20 approx. 80), Cu80-xZrxTi20 (x=30 approx. 50), Cu90-xZrxTi30 (x=30, 40) and Cu40Zr20Ti40 alloys were successfully synthesized by mechanical alloying mixtures of pure crystalline Cu, Ti and Zr powders with SPEX high energy ball mill. These ranges are similar to those for amorphous alloys produced by melt-spinning or argon atomization techniques. The structure and thermal stability of these alloys were analysed by x-ray diffraction and differential scanning calorimeter. The results indicate that the replacement of Ti by Zr increases the chemical driving force of the amorphization reaction and the interaction of dissimilar atoms of the Cu-Ti-Zr ternary system. Several amorphous alloy samples were found to exhibit a wide supercooled liquid region before crystallization. The temperature interval of the supercooled liquid region defined by the difference between Tg and Tx, i.e. Δ Tx (=Tg -Tx), is 55K for Cu50Zr30Ti20, 51K for Cu60Zr10Ti30, 61 K for Cu40Zr30Ti30 and 40K for Cu40Zr20Ti40.

Original languageEnglish
Title of host publicationMaterials Science Forum
PublisherTrans Tech Publ
Pages67-72
Number of pages6
Volume312
Publication statusPublished - 1999
Externally publishedYes
EventProceedings of the 1998 International Symposium on Metastable, Mechanical Alloyed and Nanocrystalline Materials, ISMANAM-98 - Wollongong, Sydney, Aust
Duration: Dec 7 1998Dec 12 1998

Other

OtherProceedings of the 1998 International Symposium on Metastable, Mechanical Alloyed and Nanocrystalline Materials, ISMANAM-98
CityWollongong, Sydney, Aust
Period12/7/9812/12/98

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ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Lee, P. Y., Lin, C. K., Chen, G. S., Louh, R. F., & Chen, K. C. (1999). Formation of Cu-Zr-Ti amorphous alloys with significant supercooled liquid region by mechanical alloying. In Materials Science Forum (Vol. 312, pp. 67-72). Trans Tech Publ.