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| EFFECT OF Ti ADDITION ON THE GLASS--FORMING ABILITY OF (Zr0.59Cu0.18Ni0.13Al0.10)100-xTix ALLOYS |
| XING Dawei; SUN Jianfei; SHEN Jun; WANG Gang; YAN Ming; LIU Yu |
| School of Materials Science and Engineering; Harbin Institute of Technology; Harbin 150001 |
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Cite this article:
XING Dawei; SUN Jianfei; SHEN Jun; WANG Gang; YAN Ming; LIU Yu. EFFECT OF Ti ADDITION ON THE GLASS--FORMING ABILITY OF (Zr0.59Cu0.18Ni0.13Al0.10)100-xTix ALLOYS. Acta Metall Sin, 2004, 40(4): 416-420 .
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Abstract The effect of Ti on glass--forming ability of bulk (Zr0.59Cu0.18Ni0.13Al0.10)100-xTix
(x=0, 1, 2, ...... 6) alloys has been investigated by differential scanning calorimetry (DSC), differential thermal
analysis (DTA), and X--ray diffraction (XRD). It is shown that the liquidus temperature
Tl decreases obviously when Ti content (x) increases from 0 to 4, meanwhile the reduced glass temperature (Trg) increases from 0.62 to 0.65. When x exceeds 4, however, Tl increases and Trg decreases respectively with increasing Ti content. The wedge--shaped sample with x=4 has the largest amorphous region, i.e., has the highest relative glass--forming ability, and the relevant supercooled liquid region ΔTx is 77.6℃. The alloy with
this composition can be cast into cylinder--like amorphous alloy with
10 mm in diameter and 70 mm in length or sheet--like with 3 mm
thickness by arc melting and copper mold casting. More intermetallics
phases exist in the amorphous--crystallization zone of the wedge--shape
sample with x=4 than those of alloys with x=0 and x=2 as indicated
by XRD results. It is suggested that the crystallization would be retarded
by the interaction and competition of various phases, thus enabling a higher
glass--forming ability.
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Received: 16 April 2003
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