Method for producing Ni-based superalloy material

    公开(公告)号:US10344367B2

    公开(公告)日:2019-07-09

    申请号:US15708611

    申请日:2017-09-19

    摘要: The present invention relates to a method for producing a precipitation strengthened Ni-based superalloy material having a predetermined composition, containing a blooming forging step of performing a forging at a temperature range of from Ts to Tm and performing an air cooling to form a billet having an average crystal grain size of #1 or more, an overaging thermal treatment step of heating and holding the billet at a temperature range of from Ts to Ts+50° C. and slowly cooling it to a temperature of Ts or lower, and a crystal grain fining forging step of performing another forging at a temperature range of from Ts−150° C. to Ts and performing another air cooling, in which Ts is from 1,030° C. to 1,100° C., and an overall average crystal grain size is #8 or more after the crystal grain fining forging step.

    NICKEL-BASED SUPERALLOY AND PARTS MADE FROM SAID SUPERALLOY

    公开(公告)号:US20190169715A1

    公开(公告)日:2019-06-06

    申请号:US16266764

    申请日:2019-02-04

    申请人: AUBERT & DUVAL

    IPC分类号: C22C19/05 C22F1/10 C22C1/02

    摘要: A nickel superalloy has the following composition, the concentrations of the different elements being expressed as wt-%: Formula (I), the remainder consisting of nickel and impurities resulting from the production of the superalloy. In addition, the composition satisfies the following equation, wherein the concentrations of the different elements are expressed as atomic percent: Formula (II).

    Nickel based superalloy with high volume fraction of precipitate phase

    公开(公告)号:US10301711B2

    公开(公告)日:2019-05-28

    申请号:US14867232

    申请日:2015-09-28

    IPC分类号: C22F1/10 C22C19/05

    摘要: A process includes solution heat treating a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate to dissolve the gamma prime precipitate in the nickel based superalloy; cooling the nickel based superalloy to about 85% of a solution temperature measured on an absolute scale to coarsen the gamma prime precipitate such that a precipitate structure is greater than about 0.7 micron size; and wrought processing the nickel based superalloy at a temperature below a recrystallization temperature of the nickel based superalloy. A material includes a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate in which the precipitate structure is greater than about 0.7 micron size.