CN102051560B - Ductile titanium alloy material and preparation method thereof - Google Patents
Ductile titanium alloy material and preparation method thereof Download PDFInfo
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- CN102051560B CN102051560B CN201110007450XA CN201110007450A CN102051560B CN 102051560 B CN102051560 B CN 102051560B CN 201110007450X A CN201110007450X A CN 201110007450XA CN 201110007450 A CN201110007450 A CN 201110007450A CN 102051560 B CN102051560 B CN 102051560B
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Abstract
The invention discloses a ductile titanium alloy material and a preparation method thereof. The material takes titanium alloy as a substrate, and metal wire groups formed by stainless steel wires and iron wires are distributed in the substrate, wherein both the diameter of the stainless steel wires and that of the iron wires are between 1 and 2 mm; the overall length of the stainless steel wires in the material is equivalent to that of the iron wires in the material; and the stainless steel wires and the iron wires in total account for 10 to 35 percent of the volume of the material. The ductile titanium alloy material prepared by the method has the advantages of high toughness, low production cost and simple process.
Description
Technical field
The invention belongs to metal material field, relate to a kind of toughness titanium alloy material and preparation method thereof.
Background technology
In metal material field, the toughness titanium alloy receives generally as low-cost toughness material always and paying attention to.
CN200810240713.X number application relates to a kind of novel high strength and toughness titanium, and its composition consists of (weight percentage): 2.0～5.5% Al, 2.0～8.0% Mo; 2.0～6.0% V, and the value of Mo/V contains Cr or Cr and Fe (Fe content is no more than 0.9%) 1/3～4; Its composition range is 2.0～5.0%, and k β=CMo/11+CV/14.9+CCr/6.5+CFe/5, and its value is 0.85～1.4; Be not more than 0.10% Si, be not more than 0.10% 0, be not more than 0.01% H; Other composition is controlled by conventional titanium alloy, and surplus is Ti; Can also contain a kind of among neutral element Zr, Hf, the Sn or two kinds in the said alloy, and composition range is 0.15～3.5%.But the toughness of this alloy material is still waiting further improvement, and its one-tenth is grouped into wayward.
Summary of the invention
The object of the invention is exactly to above-mentioned technological deficiency, and a kind of toughness titanium alloy material is provided, and this material has good performance.
Another object of the present invention provides a kind of preparation method of titanium alloy material, and this preparing method's technology is simple, and production cost is low, is suitable for suitability for industrialized production.
The objective of the invention is to realize through following technical scheme:
A kind of toughness titanium alloy material; This material is matrix with the titanium alloy; The wire group that in matrix, is distributing and forming by Stainless Steel Wire and iron wire, the diameter of Stainless Steel Wire and iron wire is 1-2mm, and the diameter of wire group is 10-15cm; The overall length of Stainless Steel Wire and iron wire is suitable in the material, and the volume percent that stainless steel and iron wire account for material altogether is 10-35%;
The following chemical components in percentage by weight of said titanium alloy substrate: A
lBe 1-1.5%, Fe 0.3%～0.5%, and Cu 3%～5%, and Zr 0.02%～0.04%, and Y 1%～3%, and Si 0.2%～0.5%, and all the other are Ti;
The following chemical components in percentage by weight of said Stainless Steel Wire: Cr is 14-16%, and Ni is 6-8%, and Mo is 1.85-2.25%, and Al is 0.6-1.1%, and %C is 0.03-0.07%, and < 0.02%, < 0.02%, all the other are Fe to S to P;
The following chemical components in percentage by weight of said iron wire is: C is 0.05-0.09, and Si is 0.2%～0.3%, and Mn is 0.25-0.35%, and < 0.02%, < 0.025%, all the other are Fe to S to P.
Also be distributed with compound TiB particle in the said matrix.
A kind of preparation method of toughness titanium alloy material is characterized in that: it may further comprise the steps:
The preparation of Stainless Steel Wire and boronising iron wire: directly for 1-2mm, composition weight percentage are that Cr is 14-16%, Ni is 6-8% to cut-off respectively, and Mo is 1.85-2.25%; Al is 0.6-1.1%, and %C is 0.03-0.07%, and P < 0.02%; S 0.02%, all the other for the Stainless Steel Wire of Fe and cut-off directly for 1-2mm, composition are that C is 0.05-0.09, Si is 0.2%～0.3%; Mn is 0.25-0.35%, and < 0.02%, S < 0.025% for P; All the other are the iron wire of Fe, and the overall length of Stainless Steel Wire and iron wire is suitable, and the volume percent that two kinds of wires account for material is 10-35%; Carry out the boronising processing on the iron wire surface by ordinary method and obtain the boronising iron wire: the thickness of boride layer is the 200-300 micron;
Ordinary method by cleaning ball production is respectively got rhizoid formation globular mixing mariages wire group with above-mentioned Stainless Steel Wire and boronising iron wire; Wire group's diameter is 10-15cm; Number of metal silk group is put into casting mold mo(u)ld bottom half die cavity; The tightness of wire group guarantees that by the volume percent decision that Stainless Steel Wire and iron wire account for material wire group just in time piles casting mold; After deploying, the mo(u)ld top half of casting mold is placed on the mo(u)ld bottom half, molten iron pouring is waited in the mould assembling back that finishes;
The preparation of titanium alloy substrate: percentage composition A by weight
lBe 1-1.5%, Fe 0.3%～0.5%, and Cu 3%～5%, and Zr 0.02%～0.04%, and Y 1%～3%, and Si 0.2%～0.5%, and all the other are prepared burden for Ti; Titanium alloy substrate melted in induction furnace obtain titanium alloy liquid, temperature of fusion is 1700-1720 ℃;
Above-mentioned titanium alloy liquid is poured into the dry sand casting mold that wire group is housed, and titanium alloy liquid surrounds Stainless Steel Wire and boronising iron wire, cooled and solidified then, and obtaining with the titanium alloy is the toughness material that wherein is distributed with wire group of base.
It is following that the present invention compares the beneficial effect of prior art:
(1) Stainless Steel Wire of the present invention and iron wire self have suitable intensity and high toughness.The high-temperature liquid state titanium is with part Stainless Steel Wire and iron wire fusion in cast, and the B in Stainless Steel Wire and the iron wire, Ni, Cr, Fe get in the liquid titanium, forms TiB, Ti with titanium
2Ni, TiCr
2, TiFe
2Deng special compound, disperse strengthens titanium alloy; Not molten Stainless Steel Wire and iron wire and titanium alloy metallurgical binding play the toughness reinforcing effect of enhancing to titanium alloy.Cu and Si form Ti in titanium
3Si and Cu Ti
2Also titanium alloy is played and strengthen toughness reinforcing effect.
(2) Zr in the material and Y and Ti do not form compound, and the tissue of titanium alloy is had the effect of remarkable refinement, help the raising of toughness of material.
(3) adopt iron to replace the part titanium in the alloy material, the cost of material is low, and preparation technology is easy, and production cost is low, and the alloy material performance of production is good, and is convenient to very much suitability for industrialized production.
(4) P, S are impurity in the material of the present invention, are controlled at the scope of permission.
Alloy property of the present invention is seen table 1.
Description of drawings
The wire that Fig. 1 makes for the embodiment of the invention one strengthens the metallographic structure that contains yttrium toughness titanium alloy material.
Fig. 1 can see at titanium alloy and combining well with wire.
Embodiment
Below each embodiment only with of the present invention the explaining of opposing, weight percent wherein all can change weight g, kg or other weight unit into.Diameter is that Stainless Steel Wire and the iron wire of 1-2mm is commercial basis in following examples, the boride layer self-control.
Embodiment one:
The following chemical components in percentage by weight of titanium alloy substrate: A
lBe 1%, Fe is 0.3%, and Cu is 3%, and Zr is 0.02%, and Y is 1%, and Si is 0.2%, and all the other are Ti.
The following chemical components in percentage by weight of Stainless Steel Wire: Cr is 14%, and Ni is 6%, and Mo is 1.85%, and Al is 0.6%, and %C is 0.03%, and < 0.02%, < 0.02%, all the other are Fe to S to P; The diameter of this Stainless Steel Wire is 1mm.
The following chemical components in percentage by weight of iron wire: for C is 0.05%, Si is 0.2%, and Mn is 0.25%, and < 0.02%, < 0.025%, all the other are Fe to S to P; The diameter of this iron wire is 1mm.
The overall length of the Stainless Steel Wire of getting and iron wire suitable, the volume percent that two kinds of wires account for material altogether is 10%.
The iron wire surface obtains the boronising iron wire by the ordinary method boronising: the thickness of boride layer is 200 microns.
By the ordinary method of cleaning ball production above-mentioned Stainless Steel Wire and boronising iron wire respectively being got a rhizoid forms globular mixings mariages wire group (two kinds of silks is respectively got a while moulding; Form mariages wire group; Moulding can or be claimed the method for steel wire lump by the cleaning ball of the usefulness that washes the dishes); Wire group's diameter is 15cm; Number of metal silk group is put into casting mold mo(u)ld bottom half die cavity, and the tightness of wire group guarantees that by the volume percent decision that Stainless Steel Wire and iron wire account for material wire group just in time piles casting mold; After deploying, the mo(u)ld top half of casting mold is placed on the mo(u)ld bottom half, molten iron pouring is waited in the mould assembling back that finishes;
Titanium alloy substrate melted in induction furnace obtain titanium alloy liquid, temperature of fusion is 1710-1715 ℃;
Above-mentioned titanium alloy liquid is poured into the dry sand casting mold that wire group is housed, and titanium alloy liquid surrounds Stainless Steel Wire and boronising iron wire, cooled and solidified then, and obtaining with the titanium alloy is the toughness material that wherein is distributed with wire group of base.
Embodiment two:
The titanium alloy substrate composition is percentage composition by weight: A
lBe 1.5%, Fe is 0.5%, and Cu is 5%, and Zr is 0.04%, and Y is 3%, and Si is 0.5%, and all the other are prepared burden for Ti.
The following chemical components in percentage by weight of Stainless Steel Wire: Cr is 16%, and Ni is 8%, and Mo is 2.25%, and Al is 1.1%, and C is 0.07%, and < 0.02%, < 0.02%, all the other are Fe to S to P; The diameter of this Stainless Steel Wire is 2mm.
The following chemical components in percentage by weight of iron wire: C is 0.09%, and Si is 0.3%, and Mn is 0.35%, and < 0.02%, < 0.025%, all the other are Fe to S to P; The diameter of this iron wire is 2mm.
The overall length of Stainless Steel Wire and iron wire is suitable in the material, and the volume percent that two kinds of wires account for material altogether is 35%.
The iron wire surface obtains the boronising iron wire according to the ordinary method boronising: the thickness of boride layer is 300 microns.Press the ordinary method making boronising iron wire of cleaning ball production and the mariages wire group that two kinds of wires of Stainless Steel Wire mix, wire group diameter is 10cm.
The preparation process is with embodiment one.
Embodiment three:
The titanium alloy substrate composition is percentage composition by weight: A
lBe 1.2%, Fe is 0.4%, and Cu is 4%, and Zr is 0.03%, and Y is 2%, and Si is 0.4%, and all the other are prepared burden for Ti.
The following chemical components in percentage by weight of Stainless Steel Wire: Cr is 15%, and Ni is 7%, and Mo is 2%, and Al is 1%, and C is 0.04%, and < 0.02%, < 0.02%, all the other are Fe to S to P; The diameter of this Stainless Steel Wire is 1.5mm.
The following chemical components in percentage by weight of iron wire: C is 0.07%, and Si is 0.25%, and Mn is 0.3%, and < 0.02%, < 0.025%, all the other are Fe to S to P; The diameter of this iron wire is 1.5mm.
The overall length of Stainless Steel Wire and iron wire is suitable in the material, and the volume percent that two kinds of wires account for material altogether is 20%.
Iron wire obtains the boronising iron wire by the ordinary method boronising: boride layer thickness is 250mm.Press the ordinary method making boronising iron wire of cleaning ball production and the mariages wire group that two kinds of wires of Stainless Steel Wire mix, wire group diameter is 15cm.
The preparation process is with embodiment one.
The comparative example four: proportioning raw materials is within the scope of the present invention instance not
The following chemical components in percentage by weight of titanium alloy substrate: A
lBe 0.8%, Fe is 0.2%, and Cu is 2%, and Zr is 0.01%, and Y is 0.5%, and Si is 0.1%, and all the other are Ti.
The following chemical components in percentage by weight of Stainless Steel Wire: Cr is 12%, and Ni is 5%, and Mo is 1.5%, and Al is 0.5%, and %C is 0.02%, and < 0.02%, < 0.02%, all the other are Fe to S to P; The diameter of Stainless Steel Wire is 0.5mm.
The composition of iron wire is that C is 0.04%, and Si is 0.1%, and Mn is 0.2%, and < 0.02%, < 0.025%, all the other are Fe to S to P; The diameter of iron wire is 0.5mm.
The overall length of Stainless Steel Wire and iron wire is suitable in the material, and the volume percent that two kinds of wires account for material is 5%.
Iron wire does not carry out boronising to be handled.Press the ordinary method making iron wire of cleaning ball production and the mariages wire group that two kinds of wires of Stainless Steel Wire mix, wire group diameter is 10cm.
The preparation process is with embodiment one.
The comparative example five: proportioning raw materials is within the scope of the present invention instance not
The following chemical components in percentage by weight of titanium alloy substrate: A
lBe 2%, Fe is 0.6%, and Cu is 6%, and Zr is 0.05%, and Y is 4%, and Si is 0.6%, and all the other are Ti.
The following chemical components in percentage by weight of Stainless Steel Wire: Cr is 17%, and Ni is 9%, and Mo is 3%, and Al is 2%, and C is 0.1%, and < 0.02%, < 0.02%, all the other are Fe to S to P; The diameter of Stainless Steel Wire is 3mm.
The following chemical components in percentage by weight of iron wire: C is 0.1%, and Si is 0.4%, and Mn is 0.4%, and < 0.02%, < 0.025%, all the other are Fe to S to P; The diameter of iron wire is 3mm.
The overall length of Stainless Steel Wire and iron wire is suitable in the material, and the volume percent that two kinds of wires account for material is 40%.
Iron wire obtains the boronising iron wire by the ordinary method boronising: boride layer thickness is 400 microns.Press the ordinary method making boronising iron wire of cleaning ball production and the mariages wire group that two kinds of wires of Stainless Steel Wire mix, wire group diameter is 10cm.
The preparation process is with embodiment one.
Each product performance contrast of table 1
From table, can find out the A in the titanium alloy substrate
l, Fe, Cu, Zr, Y, Si increase the mechanical property that is beneficial to alloy and improve; But some element such as Cu, Fe, A
lIt is too much to cross the compound that forms at most, can weaken the toughness of alloy material.Some element such as Zr, Y are too much, cause the element waste.
Cr in the Stainless Steel Wire, Ni, Mo, Al, C increase the mechanical property that is beneficial to steel wire itself and improve; But cross the toughness that can weaken alloy material at most.
Composition in the iron wire is that C, Si, Mn increase the mechanical property that is beneficial to alloy and improve; But cross the toughness that can weaken alloy at most.
The increase of Stainless Steel Wire and two kinds of wire volume percent of iron wire is beneficial to the raising of toughness of material.But too much, the titanium alloy substrate bag does not live Stainless Steel Wire and boronising iron wire, and crackle appears in matrix, has then reduced the toughness of material, therefore influences the resistance to corrosion of alloy.
Stainless Steel Wire or iron wire diameter are too little simultaneously, and then surface-area is too big, is unfavorable for the dissolving of coating element in titanium water, otherwise Stainless Steel Wire or iron wire diameter are too big, and the density that in titanium alloy substrate, distributes reduces, and are unfavorable for that again the material monolithic flexible improves.
Claims (1)
1. the preparation method of a toughness titanium alloy material, it is characterized in that: it may further comprise the steps:
The preparation of Stainless Steel Wire and boronising iron wire: directly for 1-2mm, composition weight percentage are that Cr is 14-16%, Ni is 6-8% to cut-off respectively, and Mo is 1.85-2.25%; Al is 0.6-1.1%, and %C is 0.03-0.07%, and P < 0.02%; S 0.02%, all the other for the Stainless Steel Wire of Fe and cut-off directly for 1-2mm, composition are that C is 0.05-0.09, Si is 0.2%～0.3%; Mn is 0.25-0.35%, and < 0.02%, S < 0.025% for P; All the other are the iron wire of Fe, and the overall length of Stainless Steel Wire and iron wire is suitable, and the volume percent that two kinds of wires account for material is 10-35%;
Carry out the boronising processing on the iron wire surface by ordinary method and obtain the boronising iron wire: the thickness of boride layer is the 200-300 micron;
Ordinary method by cleaning ball production is respectively got rhizoid formation globular mixing mariages wire group with above-mentioned Stainless Steel Wire and boronising iron wire; Wire group's diameter is 10-15cm; Number of metal silk group is put into casting mold mo(u)ld bottom half die cavity; The tightness of wire group guarantees that by the volume percent decision that Stainless Steel Wire and iron wire account for material wire group just in time piles casting mold; After deploying, the mo(u)ld top half of casting mold is placed on the mo(u)ld bottom half, molten iron pouring is waited in the mould assembling back that finishes;
The preparation of titanium alloy substrate: percentage composition A by weight
lBe 1-1.5%, Fe 0.3%～0.5%, and Cu 3%～5%, and Zr 0.02%～0.04%, and Y 1%～3%, and Si 0.2%～0.5%, and all the other are prepared burden for Ti; Titanium alloy substrate melted in induction furnace obtain titanium alloy liquid, temperature of fusion is 1700-1720 ℃;
Above-mentioned titanium alloy liquid is poured into the dry sand casting mold that wire group is housed, and titanium alloy liquid surrounds Stainless Steel Wire and boronising iron wire, cooled and solidified then, and obtaining with the titanium alloy is the toughness material that wherein is distributed with wire group of base.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1376809A (en) * | 2001-03-23 | 2002-10-30 | 中国科学院金属研究所 | High-strnegth Ti-base composition reinforced by in-situ combination of crystal whiskers with particles |
| EP1798301A1 (en) * | 2005-09-07 | 2007-06-20 | E & F Corporation | Titanium alloy composite material, method for production of the material, titanium clad material using the material, and method for manufacture of the clad |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1376809A (en) * | 2001-03-23 | 2002-10-30 | 中国科学院金属研究所 | High-strnegth Ti-base composition reinforced by in-situ combination of crystal whiskers with particles |
| EP1798301A1 (en) * | 2005-09-07 | 2007-06-20 | E & F Corporation | Titanium alloy composite material, method for production of the material, titanium clad material using the material, and method for manufacture of the clad |
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Address after: 214135 Jiangsu city of Wuxi province innovation building No. 97 Wuxi district two Linghu Avenue South Building Room 101 Patentee after: Nanjing University of Information Science and Technology Address before: 210044 Nanjing City, Pukou Province, Nanjing Road, No. 219, No. six, No. Patentee before: Nanjing University of Information Science and Technology |
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Effective date of registration: 20151030 Address after: 211600 No. 13, health Road, Jinhu County, Jiangsu, Huaian Patentee after: Jinhu Zhongbo IOT Technology Co., Ltd. Address before: 214135 Jiangsu city of Wuxi province innovation building No. 97 Wuxi district two Linghu Avenue South Building Room 101 Patentee before: Nanjing University of Information Science and Technology |
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