التفاصيل البيبلوغرافية
| العنوان: |
Fully-dense discontinuosly-reinforced titanium matrix composites and method for manufacturing the same |
| Document Number: |
20100074788 |
| تاريخ النشر: |
March 25, 2010 |
| Appl. No: |
12/592084 |
| Application Filed: |
November 19, 2009 |
| مستخلص: |
The invention is suitable for the manufacture of flat or shaped titanium matrix composite articles having improved mechanical properties such as lightweight plates and sheets for aircraft and automotive applications, etc. The method for manufacturing TMCC is comprised of the following steps: (a) preparing a basic powdered blend containing matrix alloy or titanium powders, dispersing ceramic and/or intermetallic powders, and powders of said complex carbide- and/or silicide particles, (b) preparing the Al—V master alloy containing ≦5 wt. % of iron, (c) preparing the Al—V—Fe master alloy fine powder having a particle size of ≦20 μm, (d) mixing the basic powdered blend with the master alloy powder to obtain a chemical composition of TMCC, (e) compacting the powder mixture at room temperature, (f) sintering at the temperature which provides at least partial dissolution of dispersed powders, (g) forging at 1500-2300° F., and (h) cooling. The resulting TMCC has density over 98% and closed discontinuous porosity after sintering that allows making hot deformation in air without encapsulating. |
| Inventors: |
Moxson, Vladimir S. (Hudson, OH, US); Duz, Volodymyr A. (Hudson, OH, US); Shapiro, Alexander E. (Upper Arlington, OH, US) |
| Assignees: |
Advance Material Products Inc.(ADMA Products, Inc.) (Twinsburg, OH, US) |
| Claim: |
1. A method for manufacturing a fully-dense discontinuously-reinforced titanium matrix composite material comprising the following steps: (a) preparing a basic powdered blend containing a matrix alloy or titanium powders which have a particle size over 20 μm for 95% of the powder, dispersing ceramic and/or intermetallic powders, and powders of complex carbide- and/or suicide particles that are at least partially soluble in the matrix at sintering or forging temperatures such as Ti4Cr3C6, Ti3SiC2, Cr3C2, Ti3AlC2, Ti2AlC, Al4C3, Al4SiC4, Al4Si2C5, Al8SiC7, V2C, (Ti,V)C, VCr2C2, and V2Cr4C3, (b) preparing a aluminum-vanadium master alloy containing 0.01-5 wt. % of iron, (c) preparing a Al—V—Fe master alloy fine powder having a particle size of 20 μm or less, (d) mixing the basic powdered blend (a) with the master alloy powder (c) in a predetermined ratio to obtain a chemical composition of titanium matrix composite material, (e) compacting the powder mixture at room temperature by cold isostatic pressing, die pressing, or direct powder rolling, (f) sintering at a temperature providing at least partial dissolution of dispersing ceramic and/or intermetallic powders, (g) forging at a temperature range of 1500-2300° F., (h) cooling. |
| Claim: |
2. The method for manufacturing a fully-dense discontinuously-reinforced titanium matrix composite material according to claim 1, wherein the basic powdered blend is prepared in a form of elemental powder blend or combination of elemental powders and prealloyed powders blend. |
| Claim: |
3. The method for manufacturing a fully-dense discontinuously-reinforced titanium matrix composite material according to claim 1, wherein the dispersing ceramic and/or intermetallic powders are selected from the group consisting of TiC, B4C, SiC, ZrC, TaC, WC, NbC, TiAl, Ti3Al, TiAl3, TiAlV2, Al8V5, and TiCr2. |
| Claim: |
4. The method for manufacturing a fully-dense discontinuously-reinforced titanium matrix composite material according to claim 1, wherein carbon powder is introduced in the basic powder blend. |
| Claim: |
5. The method for manufacturing the fully-dense discontinuously-reinforced titanium matrix composite material according to claim 4, wherein the carbon powder is in the form of graphite, black carbon, or pyrolytic carbon. |
| Claim: |
6. The method for manufacturing a fully-dense discontinuously-reinforced titanium matrix composite material according to claim 1, wherein the sintering is carried out at a temperature of 2300° F. (1260° C.) and higher to provide complete densification and provide oversaturated solid solution that will result in a formation of coherent reinforced carbidic and/or intermetallic particles in the matrix alloy during the cooling. |
| Claim: |
7. The method for manufacturing a fully-dense discontinuously-reinforced titanium matrix composite material according to claim 1, wherein hot pressing, hot isostatic pressing, or hot rolling are carried out after sintering in any combination. |
| Claim: |
8. The method for manufacturing a fully-dense discontinuously-reinforced titanium matrix composite material according to claim 1, wherein a resulting composite material is characterized by density over 98% of theoretical value and discontinued porosity after sintering that makes it possible forging, hot pressing, hot isostatic pressing, or hot rolling without any special protective coating, encapsulating, or canning. |
| Claim: |
9. Use of near-full density titanium matrix composite material manufactured according to claim 1 in the as-sintered state characterized by density over 98% of theoretical value and discontinued porosity. |
| Claim: |
10. Use of fully-dense titanium matrix composite material manufactured according to claim 1 in the near-net shape state after forging, hot pressing, hot isostatic pressing, or hot rolling performed without any special protective coating, encapsulating, or canning, and without finishing of final product by machining and/or chemical milling. |
| Current U.S. Class: |
419/2 |
| Current International Class: |
22; 22 |
| رقم الانضمام: |
edspap.20100074788 |
| قاعدة البيانات: |
USPTO Patent Applications |