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    ALPHA,B TI BASE - AL, SN, ZR, MO, CR ALLOYS
    4.
    发明专利
    ALPHA,B TI BASE - AL, SN, ZR, MO, CR ALLOYS 未知

    公开(公告)号：AU3287884A

    公开(公告)日：1985-05-09

    申请号：AU3287884

    申请日：1984-09-10

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： BERCZIK DOUGLAS MICHAEL ,  BRODI GEORGE ,  CONNELL THOMAS EDWARD O

    IPC: C22C14/00 ,  C22F1/00 ,  C22F1/18

    Abstract: Process for improving the crack growth behavior of titanium alloys containing substantial beta stabilizers and at least 3% molybdenum, such as Ti-6-2-4-6. The process includes the steps of forging above the beta transus temperature, cooling at a controlled rate through the beta transus temperature, heating to a temperature between 50 DEG -150 DEG F. below the beta transus temperature, cooling the alloy at a rate in excess of that produced by air cooling, and aging the material between about 900 DEG F. and 1100 DEG F. The resultant material has substantially improved crack growth behavior when contrasted with material processed according to the prior art.

    5.
    发明专利
    未知

    公开(公告)号：DE3720110C2

    公开(公告)日：1995-11-02

    申请号：DE3720110

    申请日：1987-06-16

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： BERCZIK DOUGLAS MICHAEL

    IPC: B22C1/06 ,  B22D21/00 ,  B22D21/02

    Abstract: Improved technology for the melting and casting of a particular class of true beta-type titanium alloys is described. A typical alloy is titanium-35% vanadium-15% chromium. By providing carbon surfaces for contacting molten beta titanium alloys of this type improved melting and casting procedures are effectuated.

    Hardenable beta-titanium alloy
    8.
    发明专利
    Hardenable beta-titanium alloy 未知

    公开(公告)号：DE3808163A1

    公开(公告)日：1990-08-16

    申请号：DE3808163

    申请日：1988-03-11

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： BERCZIK DOUGLAS MICHAEL

    IPC: C22C14/00

    Abstract: The invention relates to hardenable, non-combustible, high-strength beta-titanium alloys and a method for their treatment. The alloys, which contain titanium, vanadium, chromium and silicon, are hardenable and show good properties at high temperatures. A typical composition comprises 35 % of V, 15 % of Cr, 1 % of Si, remainder Ti.

    TITANIUM-BASED ALLOY HAVING IMPROVED CRACK GROWTH BEHAVIOUR
    10.
    发明专利
    TITANIUM-BASED ALLOY HAVING IMPROVED CRACK GROWTH BEHAVIOUR 未知

    公开(公告)号：GB2148940A

    公开(公告)日：1985-06-05

    申请号：GB8425444

    申请日：1984-10-09

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： BERCZIK DOUGLAS MICHAEL ,  BRODI GEORGE ,  O'CONNELL THOMAS EDWARD

    IPC: C22C14/00 ,  C22F1/00 ,  C22F1/18

    Abstract: Process for improving the crack growth behavior of titanium alloys containing substantial beta stabilizers and at least 3% molybdenum, such as Ti-6-2-4-6. The process includes the steps of forging above the beta transus temperature, cooling at a controlled rate through the beta transus temperature, heating to a temperature between 50 DEG -150 DEG F. below the beta transus temperature, cooling the alloy at a rate in excess of that produced by air cooling, and aging the material between about 900 DEG F. and 1100 DEG F. The resultant material has substantially improved crack growth behavior when contrasted with material processed according to the prior art.

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