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    11.
    发明专利
    未知

    公开(公告)号：FR2462483A1

    公开(公告)日：1981-02-13

    申请号：FR8012885

    申请日：1980-06-10

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： BLACKBURN MARTIN JOHN ,  SMITH MICHAEL PRICE

    IPC: C22C14/00 ,  C22F1/16

    Abstract: Cast and forged titanium alloys suited for use at temperatures over 600 DEG C. are based on TiAl gamma phase structure. Useful alloys have about 1.5% or greater tensile ductility at temperatures of 260 DEG C. and below, thereby making them fabricable and suited for engineering applications. Disclosed are alloys having weight percent compositions of 31-36 aluminum, 0-4 vanadium, balance titanium (in atomic percent, about: 45-50Al, 0-3V, bal Ti). The inclusion of about 0.1 weight percent carbon improves creep rupture strength. To obtain high tensile strength, the alloys are forged at about 1025 DEG C. and aged at about 900 DEG C.; to obtain higher creep rupture strength and tensile ductility, a solution anneal at about 1150 DEG C. is interposed before aging.

    13.
    发明专利
    未知

    公开(公告)号：FR2635703A1

    公开(公告)日：1990-03-02

    申请号：FR8911509

    申请日：1989-09-01

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： BLACKBURN MARTIN JOHN ,  SMITH MICHAEL PRICE

    IPC: B22F1/00 ,  C22C1/04 ,  C22C14/00

    Abstract: Methods for enhancing the toughness of otherwise brittle powder metallurgy materials are presented. Adding moderate amounts of tough particulate to such brittle material enhances their ductility in excess of that which would be predicted mathematically.

    15.
    发明专利
    未知

    公开(公告)号：DE3024645A1

    公开(公告)日：1981-02-19

    申请号：DE3024645

    申请日：1980-06-30

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： BLACKBURN MARTIN JOHN ,  SMITH MICHAEL PRICE

    IPC: C22C14/00

    Abstract: Cast and forged titanium alloys suited for use at temperatures over 600 DEG C. are based on TiAl gamma phase structure. Useful alloys have about 1.5% or greater tensile ductility at temperatures of 260 DEG C. and below, thereby making them fabricable and suited for engineering applications. Disclosed are alloys having weight percent compositions of 31-36 aluminum, 0-4 vanadium, balance titanium (in atomic percent, about: 45-50Al, 0-3V, bal Ti). The inclusion of about 0.1 weight percent carbon improves creep rupture strength. To obtain high tensile strength, the alloys are forged at about 1025 DEG C. and aged at about 900 DEG C.; to obtain higher creep rupture strength and tensile ductility, a solution anneal at about 1150 DEG C. is interposed before aging.

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