CN100434553C - High temperature, solid solution, strengthened, heat-resistant titanium arroy - Google Patents
High temperature, solid solution, strengthened, heat-resistant titanium arroy Download PDFInfo
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- CN100434553C CN100434553C CNB2007100178818A CN200710017881A CN100434553C CN 100434553 C CN100434553 C CN 100434553C CN B2007100178818 A CNB2007100178818 A CN B2007100178818A CN 200710017881 A CN200710017881 A CN 200710017881A CN 100434553 C CN100434553 C CN 100434553C
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Abstract
This invention provides high-temperature solid solution reinforced heat-resistant Ti alloy, which 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.%, Ti and impurities. The Ti alloy has good comprehensive properties, especially high creep resistance and thermal stability. Thus the Ti alloy can be used at 600 deg.C for a long time. Besides, the Ti alloy has high weldability, thus can be processed by vacuum electron beam or Ar arc welding. The welding strength coefficient is 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 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 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 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%, all the other are Ti and unavoidable impurities.
What the present invention was designed is the nearly alpha titanium alloys of a kind of six constituent elements, adopts the high temperature solid solution principle, has added the refractory metal W element of weight percent 0.25～0.8% in alloy, can improve the hot strength and the creep-resistant property of alloy; 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 and two kinds of metals of Zr (particle or bits) and Ti-80Sn more than 99%, Al-20W, three kinds of master alloys of Al-10Si are Al 4.5%-7.5% by weight percentage, Sn 1%-5%, Zr 2%-8%, W 0.25%-0.8%, Si 0.2%-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〉=1030MPa, 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%, all the other are Ti and unavoidable impurities.
Preparation technology: with purity is Al more than 99% and two kinds of metals of Zr (particle or bits) and Ti-80Sn, Al-20W, three kinds of master alloys of Al-10Si percentage ratio Al:6% by weight; Sn:2.5%; Zr:3%; W:0.25%; Si:0.35%; 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〉=1030MPa, 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 0.5%, and Si 0.45%, and all the other are Ti and unavoidable impurities.
Preparation technology: with purity is Al and two kinds of metals of Zr (particle or bits) and Ti-80Sn more than 99%; Al-20W; three kinds of master alloys of Al-10Si are percentage ratio Al:6.5% by weight; Sn:3.5%; Zr:4%; W:0.5%; Si:0.45%; 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, be forged into slab, then slab rolling is 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 0.8%, and Si 0.25%, and all the other are Ti and unavoidable impurities.
Preparation technology: with purity is Al and two kinds of metals of Zr (particle or bits) and Ti-80Sn more than 99%; Al-20W; three kinds of master alloys of Al-10Si are percentage ratio Al:5.5% by weight; Sn:5%; Zr:7%; W:0.8%; Si:0.25%; 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 1200 ℃ forges processing, be forged into slab, then slab rolling is 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〉=1050MPa, 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 0.65%, and Si 0.3%, and all the other are Ti and unavoidable impurities.
Preparation technology: with purity is Al and two kinds of metals of Zr (particle or bits) and Ti-80Sn more than 99%; Al-20W; three kinds of master alloys of Al-10Si are percentage ratio Al:5% by weight; Sn:2%; Zr:3.5%; W:0.65%; Si:0.3%; 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 1200 ℃ forges processing, be forged into slab, then slab rolling is 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%, Sn:3%, Zr:4.5%, W:0.35%, Si:0.4%, all the other are Ti and unavoidable impurities.
Preparation technology: with purity is that Al more than 99% and two kinds of metals of Zr (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:0.35%; Si:0.4%; 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〉=1030MPa, 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 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%, all the other are Ti and unavoidable impurities.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100178818A CN100434553C (en) | 2007-05-18 | 2007-05-18 | High temperature, solid solution, strengthened, heat-resistant titanium arroy |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100178818A CN100434553C (en) | 2007-05-18 | 2007-05-18 | High temperature, solid solution, strengthened, heat-resistant titanium arroy |
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| CN101050496A CN101050496A (en) | 2007-10-10 |
| CN100434553C true CN100434553C (en) | 2008-11-19 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102329983A (en) * | 2010-07-13 | 2012-01-25 | 宝山钢铁股份有限公司 | Titanium alloy capable of resisting high temperature higher than 600 DEG C |
| CN104611610B (en) * | 2013-11-05 | 2017-02-01 | 北京有色金属研究总院 | High-temperature and high-strength titanium alloy and preparation method thereof |
| CN104264012A (en) * | 2014-09-30 | 2015-01-07 | 西北有色金属研究院 | Molybdenum-containing high-niobium beta-type gamma-TiAl alloy ingot and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU533050A1 (en) * | 1975-08-14 | 1991-02-15 | Ордена Ленина Предприятие П/Я Р-6209 | Titanium-base alloy |
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2007
- 2007-05-18 CN CNB2007100178818A patent/CN100434553C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU533050A1 (en) * | 1975-08-14 | 1991-02-15 | Ордена Ленина Предприятие П/Я Р-6209 | Titanium-base alloy |
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