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

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 proceeding › Chapter

Abstract

The amorphous Cu_90-xZr_xTi₁₀ (x=20 approx. 80), Cu_80-xZr_xTi₂₀ (x=30 approx. 50), Cu_90-xZr_xTi₃₀ (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 T_g and T_x, i.e. Δ T_x (=T_g -T_x), is 55K for Cu₅₀Zr₃₀Ti₂₀, 51K for Cu₆₀Zr₁₀Ti₃₀, 61 K for Cu₄₀Zr₃₀Ti₃₀ and 40K for Cu₄₀Zr₂₀Ti₄₀.

Original language	English
Title of host publication	Materials Science Forum
Publisher	Trans Tech Publ
Pages	67-72
Number of pages	6
Volume	312
Publication status	Published - 1999
Externally published	Yes
Event	Proceedings of the 1998 International Symposium on Metastable, Mechanical Alloyed and Nanocrystalline Materials, ISMANAM-98 - Wollongong, Sydney, Aust Duration: Dec 7 1998 → Dec 12 1998

Other

Other	Proceedings of the 1998 International Symposium on Metastable, Mechanical Alloyed and Nanocrystalline Materials, ISMANAM-98
City	Wollongong, Sydney, Aust
Period	12/7/98 → 12/12/98

ASJC Scopus subject areas

General Materials Science

Cite this

Lee, PY, Lin, CK, Chen, GS, Louh, RF & Chen, KC 1999, Formation of Cu-Zr-Ti amorphous alloys with significant supercooled liquid region by mechanical alloying. in Materials Science Forum. vol. 312, Trans Tech Publ, pp. 67-72, Proceedings of the 1998 International Symposium on Metastable, Mechanical Alloyed and Nanocrystalline Materials, ISMANAM-98, Wollongong, Sydney, Aust, 12/7/98.

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

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.",

author = "Lee, {P. Y.} and Lin, {C. K.} and Chen, {G. S.} and Louh, {R. F.} and Chen, {K. C.}",

year = "1999",

language = "English",

volume = "312",

pages = "67--72",

booktitle = "Materials Science Forum",

publisher = "Trans Tech Publ",

note = "Proceedings of the 1998 International Symposium on Metastable, Mechanical Alloyed and Nanocrystalline Materials, ISMANAM-98 ; Conference date: 07-12-1998 Through 12-12-1998",

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TY - CHAP

T1 - Formation of Cu-Zr-Ti amorphous alloys with significant supercooled liquid region by mechanical alloying

AU - Lee, P. Y.

AU - Lin, C. K.

AU - Chen, G. S.

AU - Louh, R. F.

AU - Chen, K. C.

PY - 1999

Y1 - 1999

N2 - 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.

AB - 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.

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M3 - Chapter

AN - SCOPUS:0032636473

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EP - 72

BT - Materials Science Forum

PB - Trans Tech Publ

T2 - Proceedings of the 1998 International Symposium on Metastable, Mechanical Alloyed and Nanocrystalline Materials, ISMANAM-98

Y2 - 7 December 1998 through 12 December 1998

ER -

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

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