Invention Application
- Patent Title: High Elastic Modulus Shafts and Method of Manufacture
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Application No.: US15411355Application Date: 2017-01-20
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Publication No.: US20170130289A1Publication Date: 2017-05-11
- Inventor: Dilip M. Shah , Herbert A. Chin , John Joseph Marcin , Paul L. Reynolds , Gabriel L. Suciu , Paul D. Genereux
- Applicant: United Technologies Corporation
- Main IPC: C21D9/08
- 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.
Public/Granted literature
- US10829831B2 High elastic modulus shafts and method of manufacture Public/Granted day:2020-11-10
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