公开(公告)号：WO1994024320A1

公开(公告)日：1994-10-27

申请号：PCT/US1994004150

申请日：1994-04-14

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： UNITED TECHNOLOGIES CORPORATION ,  ALLEN, William, P. ,  BORNSTEIN, Norman, S. ,  CHIN, Stephen ,  DECRESCENTE, Michael ,  DUHL, David, N. ,  PARILLE, Donald, R. ,  PIKE, Roscoe, A. ,  SMEGGIL, John, G.

IPC: C22B09/14

CPC classification number: C22F1/10 ,  C21D3/02 ,  C22B9/14 ,  C22F1/02

Abstract: Superalloy articles are made more oxidation resistant by a process which includes heat treating the article in the presence of foreign chemical species, at a temperature at which the foreign chemical species reacts with and modifies any oxide film present on the article surface. The heat treatment is best carried out at a temperature above the gamma prime solvus temperature of the article and below the incipient melting temperature of the article. Alternatively, the heat treatment may be carried out within the range defined by the incipient melting temperature of the article and about 150 DEG C below the incipient melting temperature of the article. At such temperatures the foreign chemical species reacts with and modifies the oxide film on the article surface. Sulfur is then able to diffuse through such modified film, and a more oxidation resistant component is produced.

Abstract translation: 超合金制品通过包括在外来化学物质存在下在外部化学物质与物品表面上存在的任何氧化膜反应的温度下进行热处理的方法制成更耐氧化。 热处理最好在高于制品的γ'溶质温度并低于制品初始熔化温度的温度下进行。 或者，热处理可以在由制品的初始熔融温度限定的范围内进行，并且比制品的初始熔融温度低约150℃。 在这样的温度下，外来化学物质与制品表面上的氧化膜反应并改变。 然后硫能够扩散通过这种改性膜，并且产生更耐氧化的组分。

公开(公告)号：WO1994024319A1

公开(公告)日：1994-10-27

申请号：PCT/US1994002719

申请日：1994-03-14

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： UNITED TECHNOLOGIES CORPORATION ,  ALLEN, William, P. ,  PARILLE, Donald, R.

IPC: C22B09/14

CPC classification number: C22F1/10 ,  C21D3/02 ,  C22B9/14 ,  C22F1/02

Abstract: Superalloy articles are made more oxidation resistant by a process which includes heating the article in an environment having a reduced pressure of inert gas and a low partial pressure of oxygen to a temperature at which the sulfur in the article diffuses out. The heat treatment is best carried out at a temperature within the range defined by the incipient melting temperature of the article and about 150 DEG C below the incipient melting temperature of the article. Alternatively, the heat treatment may be carried out at a temperature above the gamma prime solvus temperature of the article and below the incipient melting temperature of the article. At such temperatures, sulfur readily diffuses out of the article, and a more oxidation resistant component is produced.

Abstract translation: 超合金制品通过包括在具有减压惰性气体和低分压氧的环境中加热制品至制品中的硫扩散出的温度的方法制成更耐氧化。 热处理最好在制品的初始熔融温度限定的范围内进行，比制品初始熔化温度低约150℃。 或者，热处理可以在高于制品的γ'溶解温度并低于制品的初始熔化温度的温度下进行。 在这样的温度下，硫容易从制品中扩散出来，产生更耐氧化的组分。