Invention Grant
US09322090B2 Components formed by controlling grain size in forged precipitation-strengthened alloys
有权
通过在锻造的沉淀强化合金中控制晶粒尺寸形成的组分
- Patent Title: Components formed by controlling grain size in forged precipitation-strengthened alloys
- Patent Title (中): 通过在锻造的沉淀强化合金中控制晶粒尺寸形成的组分
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Application No.: US14171901Application Date: 2014-02-04
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Publication No.: US09322090B2Publication Date: 2016-04-26
- Inventor: George Albert Goller , Raymond Joseph Stonitsch , Richard DiDomizio
- Applicant: General Electric Company
- Applicant Address: US NY Schenectady
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Schenectady
- Agent Ernest G. Cusick; Frank A. Landgraff
- Main IPC: C22F1/10
- IPC: C22F1/10 ; C22C38/00 ; C22C19/03 ; C22C19/05 ; B22F3/15 ; B21J1/06 ; B21K1/32 ; B22F3/17 ; F01D5/02 ; F01D25/00

Abstract:
Components and methods of processing such components from precipitation-strengthened alloys so that the components exhibit desirable grain sizes following a supersolvus heat treatment. The method includes consolidating a powder of the alloy to form a billet having an average grain size. The billet is then forged at a temperature below the solvus temperature to form a forging having an average grain size of not coarser than the grain size of the billet. The billet is then forged at a total strain of at least 5%, after which at least a portion of the forging is heat treated at a temperature below the solvus temperature to pin grains within the portion. The entire forging can then be heat treated at a temperature above the solvus temperature of the alloy without coarsening the grains in the portion.
Public/Granted literature
- US20150284832A1 COMPONENTS FORMED BY CONTROLLING GRAIN SIZE IN FORGED PRECIPITATION-STRENGTHENED ALLOYS Public/Granted day:2015-10-08
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