公开(公告)号：EP1927722A1

公开(公告)日：2008-06-04

申请号：EP07121543.8

申请日：2007-11-26

Applicant: General Electric Company

Inventor： Wayte, Peter ,  Mickle, Brian Francis ,  Woodfield, Andrew Philip

IPC: F01D5/06 ,  B23P15/04

CPC classification number: B23P15/006 ,  F01D5/02 ,  F01D5/063 ,  F05D2230/232 ,  F05D2230/25 ,  Y02T50/671 ,  Y10T29/4932

Abstract: A rotor assembly for a turbine is provided. The rotor assembly includes a first portion (210) of a rotor component forged from a first material. The first material is processed using a first process. The rotor assembly also includes a second portion (230) of the rotor component separately forged from a second material that is the same material as the first material. The second portion is processed using a second process and is coupled to the first portion at a first axial position. A method for fabricating a rotor assembly for a turbine is also provided.

Abstract translation: 提供了一种用于涡轮机的转子组件。 转子组件包括从第一材料锻造的转子部件的第一部分（210）。 使用第一种方法处理第一种材料。 转子组件还包括转子部件的第二部分（230），其与第一材料相同的第二材料分开锻造。 第二部分使用第二过程进行处理，并且在第一轴向位置处联接到第一部分。 还提供了一种用于制造用于涡轮机的转子组件的方法。

公开(公告)号：EP1927722B1

公开(公告)日：2010-02-24

申请号：EP07121543.8

申请日：2007-11-26

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Wayte, Peter ,  Mickle, Brian Francis ,  Woodfield, Andrew Philip

IPC: F01D5/06 ,  B23P15/04

CPC classification number: B23P15/006 ,  F01D5/02 ,  F01D5/063 ,  F05D2230/232 ,  F05D2230/25 ,  Y02T50/671 ,  Y10T29/4932

公开(公告)号：EP1847627A3

公开(公告)日：2008-10-08

申请号：EP07106150.1

申请日：2007-04-13

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Mourer, David Paul ,  Mickle, Brian Francis ,  Srivatsa, Shesh Krishna ,  Huron, Eric Scott ,  Groh, Jon Raymond ,  Bain, Kenneth Rees

IPC: C22F1/10 ,  C22C19/05

CPC classification number: C22F1/10 ,  C22C19/056 ,  C22C19/057

Abstract: A method of forming a component from a gamma-prime precipitation-strengthened nickel-base superalloy so that, following a supersolvus heat treatment, the component characterized by a uniformly-sized grain microstructure. The method includes forming a billet having a sufficiently fine grain size to achieve superplasticity of the superalloy during a subsequent working step. The billet is then worked at a temperature below the gamma-prime solvus temperature of the superalloy so as to form a worked article, wherein the billet is worked so as to maintain strain rates above a lower strain rate limit to control average grain size and below an upper strain rate limit to avoid critical grain growth. Thereafter, the worked article is heat treated at a temperature above the gamma-prime solvus temperature of the superalloy for a duration sufficient to uniformly coarsen the grains of the worked article, after which the worked article is cooled at a rate sufficient to reprecipitate gamma-prime within the worked article.

公开(公告)号：EP1847627A2

公开(公告)日：2007-10-24

申请号：EP07106150.1

申请日：2007-04-13

Applicant: General Electric Company

Inventor： Mourer, David Paul ,  Mickle, Brian Francis ,  Srivatsa, Shesh Krishna ,  Huron, Eric Scott ,  Groh, Jon Raymond ,  Bain, Kenneth Rees

IPC: C22F1/10

CPC classification number: C22F1/10 ,  C22C19/056 ,  C22C19/057

Abstract: A method of forming a component from a gamma-prime precipitation-strengthened nickel-base superalloy so that, following a supersolvus heat treatment, the component characterized by a uniformly-sized grain microstructure. The method includes forming a billet having a sufficiently fine grain size to achieve superplasticity of the superalloy during a subsequent working step. The billet is then worked at a temperature below the gamma-prime solvus temperature of the superalloy so as to form a worked article, wherein the billet is worked so as to maintain strain rates above a lower strain rate limit to control average grain size and below an upper strain rate limit to avoid critical grain growth. Thereafter, the worked article is heat treated at a temperature above the gamma-prime solvus temperature of the superalloy for a duration sufficient to uniformly coarsen the grains of the worked article, after which the worked article is cooled at a rate sufficient to reprecipitate gamma-prime within the worked article.

Abstract translation: 从γ'沉淀强化镍基超合金形成的部件的方法，使得继超固溶热处理，由均匀尺寸晶粒显微组织为特征的组件。 该方法包括形成具有足够细的晶粒尺寸在随后的工作步骤，实现超合金的超塑性坯料。 将钢坯然后在低于所述超级合金的γ'固溶线温度的温度下加工，以便形成一个加工制品，worin坯料被加工，以便保持上述较低的应变速率极限应变率，以控制平均粒径和下面 在上应变速率限制，以避免临界晶粒生长。 那里之后，加工制品的热在上述用于均匀地充的持续时间的超合金的γ'固溶温度的温度下处理粗化加工制品，afterwhich的加工制品以足以再沉淀伽马的速率冷却的晶粒 在加工制品中的素数。