CN100432260C - Yttrium-bast block metal glass alloy material and its preparing method - Google Patents
Yttrium-bast block metal glass alloy material and its preparing method Download PDFInfo
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- CN100432260C CN100432260C CNB2005100272666A CN200510027266A CN100432260C CN 100432260 C CN100432260 C CN 100432260C CN B2005100272666 A CNB2005100272666 A CN B2005100272666A CN 200510027266 A CN200510027266 A CN 200510027266A CN 100432260 C CN100432260 C CN 100432260C
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Abstract
The present invention relates to a yttrium-base alloy material of block metal glass and a preparing method thereof, which belongs to the technical field of rare metal alloy materials. The alloy material of the present invention comprises the following components (by atomic percentage): Y<100-a-b-c>Ce<a>Co<b>Al<c>, wherein a is from 15 to 30, b is from 15 to 25, and c is from 20 to 30. The preparing method of the metal glass alloy material comprises the following steps: proportioning high-purity metal yttrium, metal cerium, metal cobalt and metal aluminum according to the atomic percentage; putting and smelting the mixed material in a vacuum arc furnace until all metals are smelted; uniformly mixing the smelted metals to form a mother alloy; preparing the yttrium-base alloy material of the block metal glass from the smelted solution of the mother alloy by using conventionally-used methods of copper-die suction moulding or quartz pipe water quenching. The metal glass alloy of the present invention has the characteristics of low cost, wide overcooling liquid range, high glass forming ability, low smelting point, high thermal stability, excellect processing performance, etc.
Description
Technical field
The present invention relates to a kind of Yttrium-bast block metal glass alloy material and preparation method thereof, belong to rare metal alloy material technology field.
Background technology
The research of non-crystaline amorphous metal originates in nineteen sixties, and initial non-crystaline amorphous metal is to adopt the melt method for rapid cooling to make amorphous thin ribbon.Up to the 1980s, the thickness of this amorphous thin ribbon alloy material only reaches micron order.After this, the someone adopts method such as bonding, extruding that two-layer above non-product strip is combined with each other both at home and abroad, but the overall performance of bonding amorphous alloy composite material is limited by cementing medium, be difficult to obtain high performance non-crystaline amorphous metal composite component, this has greatly limited its further research and application and development.Therefore, explore the big block metal glass alloy material of preparation is the target that the Materials science worker pursues always.Since nineteen nineties, people find that having obtained breakthrough aspect the research of bulk-metallic glass preparation some multicomponent alloy ties up to the metallic glass that can obtain bulk under the very low rate of cooling condition.The Y that announces of people such as U.S. scientist C.T.Liu for example
36Sc
20Co
20Al
24Composition can form the non-crystal bar more than 2 centimetres, and its supercooling liquid phase region width reaches 86K, but metal scandium is very expensive, and domestic quotation per kilogram reaches 5～60,000 yuan, has limited its potential widespread use.
Summary of the invention
The object of the present invention is to provide a kind of yttrium base metal glass alloy material and preparation method thereof with low-cost and high thermal stability.
A kind of Yttrium-bast block metal glass alloy material of the present invention is characterized in that the composition of this alloy material and content (atomic percent) are:
Y
100-a-b-cCe
aCo
bAl
c，
Wherein: a 15～30, and b 15～25, and c 20～30, and the content of Y is not less than 31%.
The preparation method of above-mentioned a kind of Yttrium-bast block metal glass alloy material is characterized in that having following technological process and step:
A. high pure metal yttrium, high pure metal cerium, high pure metal cobalt and high pure metal aluminium are pressed the atomic percent batching of afore mentioned rules, this admixtion is placed on melting in the vacuum arc fumace, all metals are all melted and mix the generation mother alloy; The electric current that vacuum arc fumace adopts is 150～250A;
B. the mother alloy liquation with above-mentioned gained adopts conventional copper mold or the quartz tube water quenching method of using to make Yttrium-bast block metal glass alloy material.
Through a large amount of tests and research, and according to the analysis and the calculating of Mead agate theory (Miedema ' s theory), find: after in the Y-Co-Al ternary alloy system, adding the low melting point Ce (Tm=1071K) that holds mutually with yttrium, the amorphous that has increased alloy system forms enthalpy, reduced the fusing point of alloy, when Ce adds when an amount of, can the nearly eutectic alloy of shape, have stronger glass forming ability.And the Y that announces people such as C.T.Liu
36Sc
20Co
20Al
24In the alloying constituent among the fusing point of scandium (Tm=1814K) and the present invention the fusing point (Tm=1795K) of yttrium very approaching.The composition of the metal alloy among the present invention designs according to above-mentioned principle.
Satisfying under the above-mentioned alloy composition range of condition, through the melting moulding, can make diameter and reach 5 millimeters or above block metal glass alloy, some composition also can make the block metal glass alloy that reaches 30 millimeters.Its supercooling liquid phase region width is at 50～90K.
A kind of Yttrium-bast block metal glass alloy material of the present invention has wherein adopted cerium, and cost is reduced greatly.The adding of cerium can make the fusing point of its alloy reduce, and has further increased amorphous formation ability.A is 25 in the alloy composition general formula as working as, and b is 20, and c is 24 o'clock, also is Y
31Ce
25Co
20Al
24The fusing point of alloy has only 872K, and the supercooling liquid phase region width is 80K, than the Y of people such as C.T.Liu announcement
36Sc
20Co
20Al
24Alloy melting point 937K is lower.
Therefore, yttrium-matrix bulk amorphous glassy alloy of the present invention has the supercooling liquid phase region of low cost, broad, higher glass forming ability, lower characteristics such as fusing point; Also having the advantage of higher thermostability in addition, and have good processing properties, is a kind of nearly eutectic metal glass alloy material with potential extensive use.
Embodiment
After now embodiments of the invention specifically being described in.
Embodiment 1
Adopt pure metal yttrium, pure metal cerium, pure metal cobalt and pure metallic aluminum, its purity is all more than 99.5%.Atomic percent is in accordance with regulations prepared burden, the consisting of of metallic glass alloys: Y 31, and Ce 25, and Co 20, and Al 24.
Above-mentioned admixtion is placed on melting in the vacuum arc fumace, all metals are all melted and mixes the generation mother alloy; The electric current that vacuum arc fumace adopts is 240A.Adopt conventional copper mold or the quartz tube water quenching method of using to make the bar-shaped block metal glass alloy of diameter the mother alloy liquation of gained as 5mm.
After testing and test, this 5mm rod is the non-crystal structure tissue, and its Tg (glass transformation temperature) is 567K, and Tx (crystallization temperature) is 646K, and Δ Tx (supercooling liquid phase region) is 79K.
Embodiment 2
The preparation process of present embodiment and the foregoing description 1 is identical, and difference is as follows:
Consisting of of metallic glass alloys: Y 36, Ce 20, and Co 20, and Al 24.Finally make yttrium base metal glass alloy.
After testing and test, this 5mm rod is the non-crystal structure tissue, and its Tg is 603K, and Tx is 663K, and Δ Tx is 60K.
Embodiment 3
The preparation process of present embodiment and the foregoing description 1 is identical, and difference is as follows:
Consisting of of metallic glass alloys: Y 41, Ce 15, and Co 20, and Al 24.Finally make yttrium base metal glass alloy.
After testing and test, this 5mm rod is the non-crystal structure tissue, and its Tg is 595K, and Tx is 650K, and Δ Tx is 55K.
Claims (2)
1. Yttrium-bast block metal glass alloy material is characterized in that the composition of this alloy material and atom percentage content are:
Y
100-a-b-cCe
aCo
bAl
c，
Wherein: a 15～30, and b 15～25, and c 20～30, and the content of Y is not less than 31%.
2. the preparation method of a kind of Yttrium-bast block metal glass alloy material as claimed in claim 1 is characterized in that having following technological process and step:
A. high pure metal yttrium, high pure metal cerium, high pure metal cobalt and high pure metal aluminium are pressed the atomic percent batching of afore mentioned rules, this admixtion is placed on melting in the vacuum arc fumace, all metals are all melted and mix the generation mother alloy; The electric current that vacuum arc fumace adopts is 150～250A;
B. the mother alloy liquation with above-mentioned gained adopts conventional copper mold or the quartz tube water quenching method of using to make Yttrium-bast block metal glass alloy material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100272666A CN100432260C (en) | 2005-06-29 | 2005-06-29 | Yttrium-bast block metal glass alloy material and its preparing method |
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|---|---|---|---|
| CNB2005100272666A CN100432260C (en) | 2005-06-29 | 2005-06-29 | Yttrium-bast block metal glass alloy material and its preparing method |
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|---|---|
| CN1710131A CN1710131A (en) | 2005-12-21 |
| CN100432260C true CN100432260C (en) | 2008-11-12 |
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|---|---|---|---|
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5362339A (en) * | 1991-03-14 | 1994-11-08 | Honda Giken Kogyo Kabushiki Kaisha | Magnetic refrigerant and process for producing the same |
| CN1351191A (en) * | 2000-11-01 | 2002-05-29 | 中国科学院金属研究所 | Nd-Y based amorphous alloy block |
-
2005
- 2005-06-29 CN CNB2005100272666A patent/CN100432260C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5362339A (en) * | 1991-03-14 | 1994-11-08 | Honda Giken Kogyo Kabushiki Kaisha | Magnetic refrigerant and process for producing the same |
| CN1351191A (en) * | 2000-11-01 | 2002-05-29 | 中国科学院金属研究所 | Nd-Y based amorphous alloy block |
Non-Patent Citations (6)
| Title |
|---|
| Crystallization behavior of amorphous Al84Y9Ni5Co2 alloy. N.Bassim et al.Materials Science and Engineering A,Vol.304-306 . 2001 |
| Crystallization behavior of amorphous Al84Y9Ni5Co2 alloy. N.Bassim et al.Materials Science and Engineering A,Vol.304-306 . 2001 * |
| Glass-forming Ability ofRE-Al-TMAlloys(RE-Sm,Y,TM-Fe,Co,Cu). G.J.Fan et al.Acta mater.,Vol.48 . 2000 |
| Glass-forming Ability ofRE-Al-TMAlloys(RE-Sm,Y,TM-Fe,Co,Cu). G.J.Fan et al.Acta mater.,Vol.48 . 2000 * |
| 大块非晶合金的研究进展. 王庆等.自然杂志，第23卷第3期. 2001 |
| 大块非晶合金的研究进展. 王庆等.自然杂志，第23卷第3期. 2001 * |
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| CN1710131A (en) | 2005-12-21 |
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Granted publication date: 20081112 Termination date: 20110629 |