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：NO167405B

公开(公告)日：1991-07-22

申请号：NO853929

申请日：1985-10-04

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MILLER JOHN A ,  ATHEY ROY L

IPC: B21J5/00 ,  B21K1/32 ,  B21K1/36 ,  B23P15/00 ,  C22F1/10 ,  F02C7/20 ,  F03B3/12

Abstract: A method is described for producing metallic articles, especially turbine disks, which have a hot-worked structure in one region and a warmworked structure in another region and thereby have properties which differ in different regions. The method comprises an initial hot-working step, an intermediate heat treatment step and a final warm-working step.

公开(公告)号：NO853929L

公开(公告)日：1986-06-19

申请号：NO853929

申请日：1985-10-04

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MILLER JOHN A ,  ATHEY ROY L

IPC: B21J5/00 ,  B21K1/32 ,  B21K1/36 ,  B23P15/00 ,  C22F1/10 ,  F02C7/20 ,  F03B3/12

Abstract: A method is described for producing metallic articles, especially turbine disks, which have a hot-worked structure in one region and a warmworked structure in another region and thereby have properties which differ in different regions. The method comprises an initial hot-working step, an intermediate heat treatment step and a final warm-working step.

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.

公开(公告)号：GB2168268B

公开(公告)日：1987-12-16

申请号：GB8524591

申请日：1985-10-04

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MILLER JOHN A ,  ATHEY ROY L

IPC: B21J5/00 ,  B21K1/32 ,  B21K1/36 ,  B23P15/00 ,  C22F1/10 ,  F02C7/20 ,  F03B3/12 ,  B23P15/02 ,  F01D5/02

Abstract: A method is described for producing metallic articles, especially turbine disks, which have a hot-worked structure in one region and a warmworked structure in another region and thereby have properties which differ in different regions. The method comprises an initial hot-working step, an intermediate heat treatment step and a final warm-working step.

公开(公告)号：GB2168268A

公开(公告)日：1986-06-18

申请号：GB8524591

申请日：1985-10-04

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MILLER JOHN A ,  ATHEY ROY L

IPC: B21J5/00 ,  B21K1/32 ,  B21K1/36 ,  B23P15/00 ,  C22F1/10 ,  F02C7/20 ,  F03B3/12 ,  B23P15/02 ,  F01D5/02

Abstract: A method is described for producing metallic articles, especially turbine disks, which have a hot-worked structure in one region and a warmworked structure in another region and thereby have properties which differ in different regions. The method comprises an initial hot-working step, an intermediate heat treatment step and a final warm-working step.

公开(公告)号：CA1073324A

公开(公告)日：1980-03-11

申请号：CA260314

申请日：1976-09-01

Applicant: UNITED TECHNOLOGIES CORP

Inventor： ALLEN MARVIN M ,  MILLER JOHN A ,  WOODINGS BRUCE E

IPC: C22F1/10

Abstract: A thermomechanical treatment for producing useful microstructures in the nickel base superalloys is described. The process is applied to material which has been placed in a condition of super-plasticity, and utilizes isothermal hot deformation under conditions which produce a uniform dislocation density and a resultant propensity for abnormal grain growth. The material is then recrystallized in a thermal gradient to produce a final structure consisting of elongated grains.