CN100478473C - High temperature, solid solution, strengthened, heat-resistant titanium alloy containing rare earth - Google Patents
High temperature, solid solution, strengthened, heat-resistant titanium alloy containing rare earth Download PDFInfo
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- CN100478473C CN100478473C CNB2007100178875A CN200710017887A CN100478473C CN 100478473 C CN100478473 C CN 100478473C CN B2007100178875 A CNB2007100178875 A CN B2007100178875A CN 200710017887 A CN200710017887 A CN 200710017887A CN 100478473 C CN100478473 C CN 100478473C
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Abstract
This invention provides a high-temperature solid solution strengthened heat-resistant Ti alloy containing rare earth. The Ti alloy is composed of: Al 4.5-7.5 wt.%, Sn 1-5 wt.%, Zr 2-8 wt.%, W 0.25-0.8 wt.%, Si 0.2-0.5 wt.%, Y 0.05-0.5 wt.%, and Ti as well as impurities as balance. The Ti alloy has high creep resistance and high thermal stability, and can be used at 600 deg.C for a long time. Besides, the Ti alloy has excellent weldability, thus can be processed by vacuum electron beam welding or Ar arc welding with a welding strength coefficient higher than 90%.
Description
Technical field
The present invention relates to a kind of heat-resistant titanium alloy, particularly relate to a kind of high temperature, solid solution, strengthened, heat-resistant titanium alloy containing rare earth that is used to make the titanium alloy component that use under the various hot environments.
Background technology
Heat-resistant titanium alloy is to make the necessary advanced material of contemporary high-performance aircraft engine, along with improving constantly of motor performance, the performance of heat-resistant titanium alloy has also been proposed more and more higher requirement.Present advanced aircraft engine requires the use temperature of titanium alloy will reach 600 ℃, and the ultimate-use temperature of conventional titanium alloy is exactly 600 ℃, some performance rapid deterioration, especially creep-resistant property and the thermal stability of alloy can't satisfy service requirements under this temperature.
Summary of the invention
The objective of the invention is at above-mentioned the deficiencies in the prior art, provide a kind of when use temperature reaches 600 ℃, its creep-resistant property and thermal stability still can satisfy the high temperature, solid solution, strengthened, heat-resistant titanium alloy containing rare earth of service requirements.
To achieve these goals, the technical solution used in the present invention is: a kind of high temperature, solid solution, strengthened, heat-resistant titanium alloy containing rare earth is characterized in that this alloy is made up of the raw material of following weight percentage:
Al?4.5％-7.5％ Sn?1％-5％ Zr?2％-8％ W?0.25％-0.8％
Si 0.2%-0.5% Y 0.05%-0.5%, all the other are Ti and unavoidable impurities.
What the present invention was designed is the nearly alpha titanium alloys of a kind of seven constituent elements, adopt the high temperature solid solution principle, having added weight percent in alloy is 0.25～0.8% refractory metal W element, the Si element of 0.2%-0.5% and the Y element of 0.05%-0.5%, can improve the hot strength and the creep-resistant property of alloy; Alloy organizing obtains refinement simultaneously, and fatigue property significantly improves; And the process industrial art performance of alloy is improved, make it obtain better comprehensive performance.
The preparation process of this product is: with purity is Al more than 99%, three kinds of metals of Zr and Y (particle or bits) and Ti-80Sn, Al-20W, three kinds of master alloys of Al-10Si are Al4.5%-7.5% by weight percentage, Sn1%-5%, Zr2%-8%, W0.25%-0.8%, Si0.2%-0.5%, Y0.05%-0.5%, all the other are prepared for Ti, on oil press, be pressed into block electrode then, and with several piece electrode employing plasma welding assembly welding growth strip shaped electric poles, in vacuum consumable electrode arc furnace, carry out 2～3 meltings then, melted ingot casting is heated to 1100 ℃ forges processing, finally make the bar of all size; Or be forged into slab, then slab rolling is become the sheet material of all thickness.Prepared alloy bar material and sheet material have good comprehensive performances, especially creep-resistant property and excellent heat stability:
Room temperature tensile performance σ
b〉=1040MPa, δ 〉=10%,
Residual set≤0.1% under 600 ℃/150MPa/100h of the high temperature creep property condition;
After 600 ℃/100h of thermostability heat exposes, σ
b〉=1030MPa, δ 〉=4%,
Room temperature fatigue property R=-1, σ 〉=5000Mpa.
This alloy has good weldability simultaneously, can adopt vacuum electron beam or argon arc welding method that sheet alloy is carried out welding processing, and the welding strength coefficient is greater than 90%.
The present invention compared with prior art has the following advantages: the present invention has good comprehensive performances, especially creep-resistant property and excellent heat stability, creep-resistant property and thermostability form good coupling, can be under 600 ℃ of conditions life-time service; This alloy has good weldability simultaneously, can adopt vacuum electron beam or argon arc welding method that sheet alloy is carried out welding processing, and the welding strength coefficient is greater than 90%.
Embodiment
The present invention will be further described below in conjunction with embodiment.
Embodiment 1
This alloy materials is formed and weight percentage is:
Al 6%, Sn 2.5%, Zr 3%, W 0.25%, Si 0.35%, Y0.1%, all the other are Ti and unavoidable impurities.
Preparation technology: with purity is Al more than 99%; three kinds of metals of Zr and Y (particle or bits) and Ti-80Sn; Al-20W; three kinds of master alloys of Al-10Si are percentage ratio Al:6% by weight; Sn:2.5%; Zr:3%; W:0.25%; Si:0.35%; Y:0.1%; all the other are prepared for Ti; on oil press, be pressed into block electrode then; and with several piece electrode employing plasma welding assembly welding growth strip shaped electric poles; in vacuum consumable electrode arc furnace, carry out 2～3 meltings then, melted ingot casting is heated to 1100 ℃ forges processing, finally make the bar of all size.
The prepared alloy bar material of present embodiment has good comprehensive performances, especially creep-resistant property and excellent heat stability:
Room temperature tensile performance σ
b〉=1040MPa, δ 〉=10%,
Residual set≤0.1% under 600 ℃/150MPa/100h of the high temperature creep property condition
After 600 ℃/100h of thermostability heat exposes, σ
b〉=1030MPa, δ 〉=4%,
Room temperature fatigue property R=-1, σ 〉=500MPa
Embodiment 2
This alloy materials is formed and weight percentage is:
Al 6.5%, and Sn 3.5%, and Zr 4%, and W 0.35%, and Si 0.45%, Y0.15%, and all the other are Ti and unavoidable impurities.
Preparation technology: with purity is Al more than 99%; three kinds of metals of Zr and Y (particle or bits) and Ti-80Sn; Al-20W; three kinds of master alloys of Al-10Si are percentage ratio Al:6.5% by weight; Sn:3.5%; Zr:4%; W:0.35%; Si:0.45%; Y:0.15%; all the other are prepared for Ti; on oil press, be pressed into block electrode then; and, in vacuum consumable electrode arc furnace, carry out 2～3 meltings then with several piece electrode employing plasma welding assembly welding growth strip shaped electric poles, melted ingot casting is heated to 1150 ℃ forges processing; be forged into slab, then slab rolling become the sheet material of all thickness.
The prepared sheet alloy of present embodiment has good comprehensive performances, especially creep-resistant property and excelling in fatigue property:
Room temperature tensile performance σ
b〉=1050MPa, δ 〉=10%,
Residual set≤0.2% under 600 ℃/170MPa/100h of the high temperature creep property condition;
After 600 ℃/100h of thermostability heat exposes, σ
b〉=1030MPa, δ 〉=4%,
Room temperature fatigue property R=-1, σ 〉=550Mpa.
This alloy has good weldability simultaneously, can adopt vacuum electron beam or argon arc welding method that sheet alloy is carried out welding processing, and the welding strength coefficient is greater than 90%.
Embodiment 3
This alloy materials is formed and weight percentage is:
Al 5.5%, and Sn 5%, and Zr 7%, and W 0.45%, and Si 0.25%, Y0.5%, and all the other are Ti and unavoidable impurities.
Preparation technology: with purity is Al more than 99%; three kinds of metals of Zr and Y (particle or bits) and Ti-80Sn; Al-20W; three kinds of master alloys of Al-10Si are percentage ratio Al:5.5% by weight; Sn:5%; Zr:7%; W:0.45%; Si:0.25%; Y:0.5%; all the other are prepared for Ti; on oil press, be pressed into block electrode then; and, in vacuum consumable electrode arc furnace, carry out 2～3 meltings then with several piece electrode employing plasma welding assembly welding growth strip shaped electric poles, melted ingot casting is heated to 1200 ℃ forges processing; be forged into slab, then slab rolling become the sheet material of all thickness.
The prepared sheet alloy of present embodiment has good comprehensive performances, especially creep-resistant property and room temperature excelling in fatigue property:
Room temperature tensile performance σ
b〉=1100MPa, δ 〉=10%,
Residual set≤0.15% under 600 ℃/150MPa/100h of the high temperature creep property condition;
After 600 ℃/100h of thermostability heat exposes, σ
b〉=〉=1010MPa, δ 〉=4%,
Room temperature fatigue property R=-1, σ 〉=520Mpa.
This alloy has good weldability simultaneously, can adopt vacuum electron beam or argon arc welding method that sheet alloy is carried out welding processing, and the welding strength coefficient is greater than 90%.
Embodiment 4
This alloy materials is formed and weight percentage is:
Al 5%, and Sn 2%, and Zr 3.5%, and W 0.60%, and Si 0.3%, Y0.25%, and all the other are Ti and unavoidable impurities.
Preparation technology: with purity is Al more than 99%; three kinds of metals of Zr and Y (particle or bits) and Ti-80Sn; Al-20W; three kinds of master alloys of Al-10Si are percentage ratio Al:5% by weight; Sn:2%; Zr:3.5%; W:0.60%; Si:0.3%; Y:0.25%; all the other are prepared for Ti; on oil press, be pressed into block electrode then; and, in vacuum consumable electrode arc furnace, carry out 2～3 meltings then with several piece electrode employing plasma welding assembly welding growth strip shaped electric poles, melted ingot casting is heated to 1200 ℃ forges processing; be forged into slab, then slab rolling become the sheet material of all thickness.
The prepared sheet alloy of present embodiment has good comprehensive performances, especially creep-resistant property and excellent heat stability:
Room temperature tensile performance σ
b〉=1100MPa, δ 〉=8%,
Residual set≤0.2% under 600 ℃/160MPa/100h of the high temperature creep property condition;
After 600 ℃/100h of thermostability heat exposes, σ
b〉=1100MPa, δ 〉=4%,
Room temperature fatigue property R=-1, σ 〉=450Mpa.
This alloy has good weldability simultaneously, can adopt vacuum electron beam or argon arc welding method that sheet alloy is carried out welding processing, and the welding strength coefficient is greater than 90%.
Embodiment 5
This alloy materials is formed and weight percentage is:
Al 4.5%, and Sn 3%, and Zr 4.5%, and W 0.8%, and Si 0.4%, and Y 0.20%, and all the other are Ti and unavoidable impurities.
Preparation technology: with purity is Al more than 99%; three kinds of metals of Zr and Y (particle or bits) and Ti-80Sn; Al-20W; three kinds of master alloys of Al-10Si are pressed Al:4.5%; Sn:3%; Zr:4.5%; W:0.8%; Si:0.4%; Y:0.20%; all the other are prepared for Ti; on oil press, be pressed into block electrode then; and with several piece electrode employing plasma welding assembly welding growth strip shaped electric poles; in vacuum consumable electrode arc furnace, carry out 2～3 meltings then, melted ingot casting is heated to 1150 ℃ forges processing, finally make the bar of all size.
The prepared alloy bar material of present embodiment has good comprehensive performances:
Room temperature tensile performance σ
b〉=1050MPa, δ 〉=12%,
Residual set≤0.2% under 600 ℃/160MPa/100h of the high temperature creep property condition;
After 600 ℃/100h of thermostability heat exposes, σ
b〉=1000MPa, δ 〉=4%,
Room temperature fatigue property R=-1, σ 〉=550Mpa.
Claims (1)
1, a kind of high temperature, solid solution, strengthened, heat-resistant titanium alloy containing rare earth is characterized in that this alloy is made up of the raw material of following weight percentage:
Al?4.5％-7.5％?Sn?1％-5％ Zr?2％-8％ W?0.25％-0.8％
Si 0.2%-0.5% Y 0.05%-0.5%, all the other are Ti and unavoidable impurities.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100178875A CN100478473C (en) | 2007-05-18 | 2007-05-18 | High temperature, solid solution, strengthened, heat-resistant titanium alloy containing rare earth |
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| CNB2007100178875A CN100478473C (en) | 2007-05-18 | 2007-05-18 | High temperature, solid solution, strengthened, heat-resistant titanium alloy containing rare earth |
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| CN101050497A CN101050497A (en) | 2007-10-10 |
| CN100478473C true CN100478473C (en) | 2009-04-15 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880795A (en) * | 2010-07-15 | 2010-11-10 | 上海大学 | TA16 titanium alloy obtained from trace rare earth alloying treatment |
| US20130209824A1 (en) * | 2012-02-15 | 2013-08-15 | Rti International Metals, Inc. | Titanium alloys |
| CN102586647B (en) * | 2012-03-05 | 2014-06-25 | 北京工业大学 | Erbium-containing high-temperature titanium alloy and preparation process thereof |
| CN102978440B (en) * | 2012-12-14 | 2014-05-28 | 西北有色金属研究院 | Short-time high-temperature high-strength titanium alloy |
| CN104561657B (en) * | 2014-12-26 | 2017-01-18 | 上海腾辉有色铸造有限公司 | Titanium-aluminium alloy material and preparation technology thereof |
| CN110484774B (en) * | 2019-09-24 | 2020-12-01 | 西北有色金属研究院 | 650 ℃ high-temperature resistant titanium alloy |
-
2007
- 2007-05-18 CN CNB2007100178875A patent/CN100478473C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 稀土金属在钛合金中的应用. 蔡萃丽等.稀有金属材料与工程，第1984年卷第2期. 1984 |
| 稀土金属在钛合金中的应用. 蔡萃丽等.稀有金属材料与工程，第1984年卷第2期. 1984 * |
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