公开(公告)号：DE4440229C2

公开(公告)日：2003-01-30

申请号：DE4440229

申请日：1994-11-10

Applicant: UNITED TECHNOLOGIES CORP PRATT

Inventor： SCHIRRA JOHN J ,  MILLER JOHN A ,  HATALA ROBERT W

IPC: C22C19/05 ,  C22F1/00 ,  C22F1/10

公开(公告)号：GB2152075B

公开(公告)日：1987-09-16

申请号：GB8431278

申请日：1984-12-12

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BROWN EDGAR E ,  HATALA ROBERT W

IPC: C21D8/00 ,  C22F1/00 ,  C22F1/10

Abstract: Heat treatments are described which improve subsequent HIP treatment results of superalloy articles. The heat treatments substantially eliminate certain low melting phases which otherwise would cause problems relating to gas entrapment during a HIP process. The articles are heated to a temperature near but below the intended HIP temperature for a period of time sufficient to reduce the low melting phase.

公开(公告)号：GB2284617A

公开(公告)日：1995-06-14

申请号：GB9422672

申请日：1994-11-10

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHIRRA JOHN J ,  MILLER JOHN A ,  HATALA ROBERT W

IPC: C22C19/05 ,  C22F1/00 ,  C22F1/10

公开(公告)号：FR2557146B1

公开(公告)日：1989-01-20

申请号：FR8419130

申请日：1984-12-14

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BROWN EDGAR E ,  HATALA ROBERT W

IPC: C21D8/00 ,  C22F1/00 ,  C22F1/10 ,  B23P9/02

Abstract: Heat treatments are described which improve subsequent HIP treatment results of superalloy articles. The heat treatments substantially eliminate certain low melting phases which otherwise would cause problems relating to gas entrapment during a HIP process. The articles are heated to a temperature near but below the intended HIP temperature for a period of time sufficient to reduce the low melting phase.

公开(公告)号：NO845118A

公开(公告)日：1985-06-28

申请号：NO845118

申请日：1984-12-20

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BROWN EDGAR E ,  HATALA ROBERT W

IPC: C21D8/00 ,  C22F1/00 ,  C22F1/10 ,  C22F

CPC classification number: C21D8/005 ,  C22F1/10

公开(公告)号：GB2307483B

公开(公告)日：1998-07-08

申请号：GB9703903

申请日：1994-11-10

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHIRRA JOHN J ,  MILLER JOHN A ,  HATALA ROBERT W

IPC: C22C19/05

公开(公告)号：GB2284617B

公开(公告)日：1997-11-26

申请号：GB9422672

申请日：1994-11-10

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHIRRA JOHN J ,  MILLER JOHN A ,  HATALA ROBERT W

IPC: C22C19/05 ,  C22F1/00 ,  C22F1/10

公开(公告)号：DE3446176A1

公开(公告)日：1985-07-04

申请号：DE3446176

申请日：1984-12-18

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BROWN EDGAR E ,  HATALA ROBERT W

IPC: C21D8/00 ,  C22F1/00 ,  C22F1/10 ,  C22C1/10

Abstract: Heat treatments are described which improve subsequent HIP treatment results of superalloy articles. The heat treatments substantially eliminate certain low melting phases which otherwise would cause problems relating to gas entrapment during a HIP process. The articles are heated to a temperature near but below the intended HIP temperature for a period of time sufficient to reduce the low melting phase.

公开(公告)号：FR2712307A1

公开(公告)日：1995-05-19

申请号：FR9413390

申请日：1994-11-08

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SCHIRRA JOHN J ,  MILLER JOHN A ,  HATALA ROBERT W

IPC: C22C19/05 ,  C22F1/00 ,  C22F1/10 ,  C21C1/78

公开(公告)号：DE4440229A1

公开(公告)日：1995-05-11

申请号：DE4440229

申请日：1994-11-10

Applicant: UNITED TECHNOLOGIES CORP PRATT

Inventor： SCHIRRA JOHN J ,  MILLER JOHN A ,  HATALA ROBERT W

IPC: C22C19/05 ,  C22F1/00 ,  C22F1/10

Abstract: A method of heat treating articles cast of a superalloy, comprising a nickel-base alloy capable of forming a chromium carbide precipitate, such as INCONEL 939 TM . The method includes selective heating of the article to cause chromium and carbon nuclei in the lattice of the crystals in the superalloy to go into solution, and selective cooling of the article to cause the formation of discrete chromium carbide nuclei along the grain boundary of the crystals. Additional heating steps may be performed to enhance the size of the chromium carbide nuclei. Articles so treated have improved mechanical properties.