公开(公告)号：US20170130289A1

公开(公告)日：2017-05-11

申请号：US15411355

申请日：2017-01-20

Applicant: United Technologies Corporation

Inventor： Dilip M. Shah ,  Herbert A. Chin ,  John Joseph Marcin ,  Paul L. Reynolds ,  Gabriel L. Suciu ,  Paul D. Genereux

IPC: C21D9/08 ,  C21D1/26 ,  B22D27/04 ,  C22C19/05 ,  C22C38/00 ,  C21D8/10 ,  C22F1/10

Abstract: High modulus turbine shafts and high modulus cylindrical articles are described as are the process parameters for producing these shafts and cylindrical articles. The shafts/articles have a high Young's modulus as a result of having high modulus crystal texture along the longitudinal axis of the shaft/article. The shafts are produced from directionally solidified seeded single crystal cylinders that are axisymmetrically hot worked before a limited recrystallization process is carried out at a temperature below the recrystallization temperature of the alloy. The disclosed process produces an intense singular texture and results in shaft or cylindrical article with a Young's modulus that is at least 40% greater than that of conventional nickel or iron alloys or conventional steels.

公开(公告)号：US10829831B2

公开(公告)日：2020-11-10

申请号：US15411355

申请日：2017-01-20

Applicant: United Technologies Corporation

Inventor： Dilip M. Shah ,  Herbert A. Chin ,  John Joseph Marcin ,  Paul L. Reynolds ,  Gabriel L. Suciu ,  Paul D. Genereux ,  Carl E. Kelly

IPC: C21D8/10 ,  C21D9/08 ,  C22F1/10 ,  C22C38/00 ,  F01D5/02 ,  C30B29/52 ,  C30B33/02 ,  C22C19/03 ,  B22D27/04 ,  C21D1/26 ,  C22C19/05

Abstract: High modulus turbine shafts and high modulus cylindrical articles are described as are the process parameters for producing these shafts and cylindrical articles. The shafts/articles have a high Young's modulus as a result of having high modulus crystal texture along the longitudinal axis of the shaft/article. The shafts are produced from directionally solidified seeded single crystal cylinders that are axisymmetrically hot worked before a limited recrystallization process is carried out at a temperature below the recrystallization temperature of the alloy. The disclosed process produces an intense singular texture and results in shaft or cylindrical article with a Young's modulus that is at least 40% greater than that of conventional nickel or iron alloys or conventional steels.