CN103160759B - Be-containing magnesium-based amorphous composite material - Google Patents
Be-containing magnesium-based amorphous composite material Download PDFInfo
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- CN103160759B CN103160759B CN201110407132.2A CN201110407132A CN103160759B CN 103160759 B CN103160759 B CN 103160759B CN 201110407132 A CN201110407132 A CN 201110407132A CN 103160759 B CN103160759 B CN 103160759B
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Abstract
The invention discloses a Be-containing magnesium-based amorphous composite material. An alloy is characterized by comprising the components in atomic percent shown in the formula of (Mg0.81Ni0.08Zn0.05Y0.06)100 - xBex (x ranges from 1 to 6), and comprising an impurity element O in atomic percent of not greater than 0.002%. According to the composite material disclosed by the invention, a long period phase is formed by adding element Ni, element Zn and element Y together; and the purpose of adding element Be is to increase the entropy of the alloy and change the internal atomic arrangement structure of the alloy. Compared with the existing magnesium-based amorphous composite material, the composite material disclosed by the invention is good in comprehensive mechanical property; the problem of brittle failure of magnesium-based amorphous alloy is solved; and a way with a great prospect is provided for the practicability of amorphous alloy composite material.
Description
Technical field
The invention belongs to amorphous composite technical field, be specifically related to a kind of have long-periodic structure containing the magnesium base amorphous matrix material of Be.
Background technology
Magnesium is Patterns for Close-Packed Hexagonal Crystal structure, its stacking ordination number is the two-layer stacking provisions of AB, and so-called magnesium alloy long period stacking structure is exactly the stacking sequence longer than two-layer atom stacking sequence, as 6H (ABCBCB '), 10H (ABACBCBCAC), 14H (ACBCBABABABCBC), (H represents six sided structures to 18R (its sequence is ABABABCACACABCBCBC) and 24R (ABABABABCACACACABCBCBCBC), R represents water chestnut face structure, and numeral is above that heap stamps the number of plies).
1994, Luo etc. are reported first 18R long-periodic structure in Mg-Zn-Y alloy.Calendar year 2001, Kawamura etc. have prepared yield strength more than 600MPa by the method for rapid solidification/powder metallurgy, the Mg97Zn1Y2(atomic percent of unit elongation 5%, lower same) alloy, and this alloy also has the superplasticity under excellent high-temperature yield strength and high strain rate, this makes research long-periodic structure being strengthened to magnesium alloy become a focus.Kawamura in 2004 etc. prepare again yield strength and reach 375MPa, and unit elongation arrives the As-extruded long-periodic structure enhancing Mg97ZnY2 of 4%.Matsuura in 2005 etc. are at the Mg of rapid solidification
98cu
1y
1found the long-periodic structure of amorphous and 14H in band, this alloy system that there is long-periodic structure expands to Mg-Cu-Y system by Mg-Zn-Y system.2006, it is base block amorphous that Hui Xidong etc. have successfully prepared 6H long-periodic structure enhancing magnesium with water cooled copper mould casting, and its compressive strain arrives 18%, and compressed rupture strength arrives 1.2GPa.2008, in Mg-Ni-Y alloy prepared by the water cooled copper moulds such as Itoi, find the long-periodic structure of 18R.
Current research finds, long-periodic structure strengthens magnesium alloy can be divided into two classes according to macrocyclic formation condition, the first type comprises the alloy systems such as Mg-Y-Zn, Mg-Dy-Zn, Mg-Ho-Zn and Mg-Er-Zn, long-periodic structure in these alloy systems is formed in process of setting, the type of long-periodic structure is 18R, but by high temperature annealing, its 18R structure fundamental transformation is 14H.The second type comprises the alloy systems such as Mg-Gd-Zn, Mg-Tb-Zn and Mg-Tm-Zn, there is not long-periodic structure or fewer, separated out by 14H long-periodic structure after high temperature annealing from matrix Mg supersaturated solid solution in its as cast condition.Also find in addition in Mg-RE-Zn/Cu (Mg-Gd-Zn, Mg-Sm-Zn, Mg-Er-Zn etc.) alloy, also form the dissimilar LPSO structure of 6H, l0H, 14H, 18R and 24R these 5 kinds, thus make this LPSO structure become the study hotspot problem of magnesium alloy research field.
The present invention intends open a kind of Mg-Ni-Zn-Y-Be amorphous composite, is changed the atomic arrangement structure of the magnesium base amorphous matrix material with long-periodic structure by Addition ofelements Be.Be and Mg does not dissolve each other under solid-state or even liquid state, and the atomic size of Be is very little, can carry heavy alloyed entropy, thus Be element add the structure that can change alloy, make the comprehensive mechanical property of alloy be obtained for raising to a certain degree.
Summary of the invention
The invention provides a kind of containing the magnesium base amorphous matrix material of Be, its objective is the comprehensive mechanical property improving magnesium base amorphous matrix material, prepare and there is compressive strength at room temperature >=657MPa, the amorphous composite of strain rate >=16.3%.
For achieving the above object, the present invention is by the following technical solutions:
A kind of containing Be magnesium-based amorphous alloy composite material, it is characterized in that: the component of described alloy and atomic percent are (Mg
0.81ni
0.08zn
0.05y
0.06)
100-xbe
x, x=1 ~ 6.
Impurity element and atomic percent are O≤0.002%.
Compressive strength at room temperature >=the 657MPa of magnesium base amorphous matrix material, strain rate >=16.3%.
The present invention, by adding Be element, makes the atomic structure of magnesium base amorphous matrix material change, improves the comprehensive mechanical property of alloy.
accompanying drawing illustrates:
Fig. 1 is (Mg
0.81ni
0.08zn
0.05y
0.06)
95be
5the SEM photo of alloy 2000 times;
Fig. 2 is Mg
81ni
8zn
5y
6the SEM photo of alloy 2000 times;
Fig. 3 is (Mg
0.81ni
0.08zn
0.05y
0.06)
95be
5alloy and Mg
81ni
8zn
5y
6the diameter of alloy is the stress-strain(ed) curve of 2mm sample.
embodiment:
The present invention is open a kind of containing the magnesium base amorphous matrix material of Be, and have higher intensity and good plasticity, thus solve magnesium base amorphous alloy brittle failure problem, the application for amorphous composite provides a very promising approach.
The component of described alloy and atomic percent are (Mg
0.81ni
0.08zn
0.05y
0.06)
100-xbe
x(x=1 ~ 6), impurity element and atomic percent are O≤0.002%.
The feature of above-mentioned amorphous composite is:
Compressive strength at room temperature >=657MPa, strain rate >=16.3%.
The present invention, by combining Ni, Zn and Y element of adding and having strengthening effect, makes they and Mg form Mg
12znY long period phase.Experiment shows, Mg
12znY phase long-periodic structure piles the 6H structure of stamping by ABCBCB ', and wherein A and B ' is the atomic shell being rich in Zn and Y, its structure and desirable 6H type magnesium variant, the comprehensive mechanical property of amorphous alloy composite material can be improved.The object of adding Be element carries heavy alloyed entropy, changes alloy interior atoms arrangement architecture, puies forward heavy alloyed mechanical property further.
The above-mentioned Be magnesium base long period amorphous alloy composite material that contains is prepared by following steps:
(1) prepare burden: raw material to be purity be 99.9% pure Mg, pure Ni, the pure Cu of 99.9% of 99.9%, the pure Be of the pure Y and 99.9% of 99.9%, the atomic percent of each element is (Mg
0.81ni
0.08zn
0.05y
0.06)
100-xbe
x(x=1 ~ 6), foreign matter content O≤0.002%;
(2) melting: first with electric arc furnace, high-melting-point element Cu, Y, Ni and Be are smelted into master alloy, master alloy and element M g boron nitride crucible are carried out melting in well formula resistance furnace, utilizes N
2and SF
6mixed gas is as shielding gas;
(3) cast: molten metal liquid is poured into cylinder sample.
Describe the present invention below in conjunction with specific embodiment, it should be noted that, protection scope of the present invention is not limited in following embodiment.
Embodiment 1:
A kind of containing Be magnesium-based amorphous alloy composite material, it is characterized in that: the component of described alloy and atomic percent are (Mg
0.81ni
0.08zn
0.05y
0.06)
99be
1.
Preparation method is as follows:
(1) prepare burden: raw material to be purity be 99.9% pure Mg, pure Ni, the pure Cu of 99.9% of 99.9%, the pure Be of the pure Y and 99.9% of 99.9%, the atomic percent of each element is (Mg
0.81ni
0.08zn
0.05y
0.06)
99be
1, foreign matter content O≤0.002%;
(2) melting: first with electric arc furnace, high-melting-point element Cu, Y, Ni and Be are smelted into master alloy, master alloy and element M g boron nitride crucible are carried out melting in well formula resistance furnace, utilizes N
2and SF
6mixed gas is as shielding gas;
(3) cast: molten metal liquid is poured into the cylinder sample that diameter is 2mm.
Compressive strength at room temperature >=the 657MPa of magnesium base amorphous matrix material, strain rate >=16.3%.
Embodiment 2:
A kind of containing Be magnesium-based amorphous alloy composite material, it is characterized in that: the component of described alloy and atomic percent are (Mg
0.81ni
0.08zn
0.05y
0.06)
98be
2.
Preparation method is as follows:
(1) prepare burden: raw material to be purity be 99.9% pure Mg, pure Ni, the pure Cu of 99.9% of 99.9%, the pure Be of the pure Y and 99.9% of 99.9%, the atomic percent of each element is (Mg
0.81ni
0.08zn
0.05y
0.06)
98be
2, foreign matter content O≤0.002%;
(2) melting: first with electric arc furnace, high-melting-point element Cu, Y, Ni and Be are smelted into master alloy, master alloy and element M g boron nitride crucible are carried out melting in well formula resistance furnace, utilizes N
2and SF
6mixed gas is as shielding gas;
(3) cast: molten metal liquid is poured into the cylinder sample that diameter is 2mm.
Compressive strength at room temperature >=the 661MPa of magnesium base amorphous matrix material, strain rate >=17%.
Embodiment 3:
A kind of containing Be magnesium-based amorphous alloy composite material, it is characterized in that: the component of described alloy and atomic percent are (Mg
0.81ni
0.08zn
0.05y
0.06)
97be
3.
Preparation method is as follows:
(1) prepare burden: raw material to be purity be 99.9% pure Mg, pure Ni, the pure Cu of 99.9% of 99.9%, the pure Be of the pure Y and 99.9% of 99.9%, the atomic percent of each element is (Mg
0.81ni
0.08zn
0.05y
0.06)
97be
3, foreign matter content O≤0.002%;
(2) melting: first with electric arc furnace, high-melting-point element Cu, Y, Ni and Be are smelted into master alloy, master alloy and element M g boron nitride crucible are carried out melting in well formula resistance furnace, utilizes N
2and SF
6mixed gas is as shielding gas;
(3) cast: molten metal liquid is poured into the cylinder sample that diameter is 2mm.
Compressive strength at room temperature >=the 670MPa of magnesium base amorphous matrix material, strain rate >=17.2%.
Embodiment 4:
A kind of containing Be magnesium-based amorphous alloy composite material, it is characterized in that: the component of described alloy and atomic percent are (Mg
0.81ni
0.08zn
0.05y
0.06)
96be
4.
Preparation method is as follows:
(1) prepare burden: raw material to be purity be 99.9% pure Mg, pure Ni, the pure Cu of 99.9% of 99.9%, the pure Be of the pure Y and 99.9% of 99.9%, the atomic percent of each element is (Mg
0.81ni
0.08zn
0.05y
0.06)
96be
4, foreign matter content O≤0.002%;
(2) melting: first with electric arc furnace, high-melting-point element Cu, Y, Ni and Be are smelted into master alloy, master alloy and element M g boron nitride crucible are carried out melting in well formula resistance furnace, utilizes N
2and SF
6mixed gas is as shielding gas;
(3) cast: molten metal liquid is poured into the cylinder sample that diameter is 2mm.
Compressive strength at room temperature >=the 675MPa of magnesium base amorphous matrix material, strain rate >=17.3%.
Embodiment 5:
A kind of containing Be magnesium-based amorphous alloy composite material, it is characterized in that: the component of described alloy and atomic percent are (Mg
0.81ni
0.08zn
0.05y
0.06)
95be
5.
Preparation method is as follows:
(1) prepare burden: raw material to be purity be 99.9% pure Mg, pure Ni, the pure Cu of 99.9% of 99.9%, the pure Be of the pure Y and 99.9% of 99.9%, the atomic percent of each element is (Mg
0.81ni
0.08zn
0.05y
0.06)
95be
5, foreign matter content O≤0.002%;
(2) melting: first with electric arc furnace, high-melting-point element Cu, Y, Ni and Be are smelted into master alloy, master alloy and element M g boron nitride crucible are carried out melting in well formula resistance furnace, utilizes N
2and SF
6mixed gas is as shielding gas;
(3) cast: molten metal liquid is poured into the cylinder sample that diameter is 2mm.
Compressive strength at room temperature >=the 689MPa of magnesium base amorphous matrix material, strain rate >=18%.
Fig. 1 is (Mg
0.81ni
0.08zn
0.05y
0.06)
95be
5the SEM photo of alloy 2000 times;
Fig. 2 is Mg
81ni
8zn
5y
6the SEM photo of alloy 2000 times;
Fig. 3 is (Mg
0.81ni
0.08zn
0.05y
0.06)
95be
5alloy and Mg
81ni
8zn
5y
6the diameter of alloy is the stress-strain(ed) curve of 2mm sample.
Embodiment 6:
A kind of containing Be magnesium-based amorphous alloy composite material, it is characterized in that: the component of described alloy and atomic percent are (Mg
0.81ni
0.08zn
0.05y
0.06)
94be
6.
Preparation method is as follows:
(1) prepare burden: raw material to be purity be 99.9% pure Mg, pure Ni, the pure Cu of 99.9% of 99.9%, the pure Be of the pure Y and 99.9% of 99.9%, the atomic percent of each element is (Mg
0.81ni
0.08zn
0.05y
0.06)
94be
6, foreign matter content O≤0.002%;
(2) melting: first with electric arc furnace, high-melting-point element Cu, Y, Ni and Be are smelted into master alloy, master alloy and element M g boron nitride crucible are carried out melting in well formula resistance furnace, utilizes N
2and SF
6mixed gas is as shielding gas;
(3) cast: molten metal liquid is poured into the cylinder sample that diameter is 2mm.
Compressive strength at room temperature >=the 675MPa of magnesium base amorphous matrix material, strain rate >=17%.
Claims (3)
1., containing the magnesium base amorphous matrix material of Be, it is characterized in that: the component of described alloy and atomic percent are (Mg
0.81ni
0.08zn
0.05y
0.06)
100-xbe
x, x=1 ~ 6.
2. a kind of containing the magnesium base amorphous matrix material of Be according to claim 1, it is characterized in that: impurity element and mass percent are O≤0.002%.
3. a kind of containing the magnesium base amorphous matrix material of Be according to claim 1, it is characterized in that: the compressive strength at room temperature >=657MPa of magnesium-based amorphous alloy composite material, strain rate >=16.3%.
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|---|---|---|---|---|
| CN101418423A (en) * | 2008-12-01 | 2009-04-29 | 沈阳工业大学 | Magnesium base amorphous alloy and composite material thereof |
| CN102129890A (en) * | 2011-01-11 | 2011-07-20 | 北京航空航天大学 | Amorphous alloy-based optical focusing lens and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418423A (en) * | 2008-12-01 | 2009-04-29 | 沈阳工业大学 | Magnesium base amorphous alloy and composite material thereof |
| CN102129890A (en) * | 2011-01-11 | 2011-07-20 | 北京航空航天大学 | Amorphous alloy-based optical focusing lens and preparation method thereof |
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