公开(公告)号：EP3266889A1

公开(公告)日：2018-01-10

申请号：EP17179909.1

申请日：2017-07-06

Applicant: United Technologies Corporation

Inventor： DAS, Gopal

IPC: C22C14/00 ,  C22F1/18

CPC classification number: C22C14/00 ,  C22C1/00 ,  C22F1/183

Abstract: A process to increase ductility includes utilizing γ-TiAl alloy as a base alloy and reducing at least one interstitial of the base alloy to create an alloy compositions with extremely low interstitials (Eli).

Abstract translation: 提高延展性的方法包括利用γ-TiAl合金作为基础合金并且还原基础合金的至少一个间隙以产生具有极低间隙的合金组合物（Eli）。

公开(公告)号：EP3263724A1

公开(公告)日：2018-01-03

申请号：EP17178958.9

申请日：2017-06-30

Applicant: United Technologies Corporation

Inventor： DAS, Gopal

IPC: C22C19/05 ,  C22F1/10

CPC classification number: C22F1/10 ,  B22F3/1055 ,  B22F3/15 ,  B22F3/24 ,  B33Y10/00 ,  B33Y40/00 ,  C22C19/055 ,  C22C19/056

Abstract: A method of metallurgical processing includes, providing a workpiece that has been formed by additive manufacturing of a nickel-chromium based superalloy. The workpiece has an internal porosity (28) and a microstructure with a columnar grain structure (30) and delta phase (32). The workpiece is then hot isostatically pressed to reduce the internal porosity (28) and to at least partially retain the columnar grain structure (30) and the delta phase (32). The workpiece is then heat treated to at least partially retain the columnar grain structure (30) and the delta phase (32).

Abstract translation: 冶金加工的方法包括提供已经通过镍铬基超级合金的增材制造形成的工件。 工件具有内部孔隙度（28）和具有柱状晶粒结构（30）和三角洲相（32）的微结构。 然后工件被等静压加热以减少内部孔隙率（28）并至少部分地保持柱状晶粒结构（30）和三角相（32）。 然后对工件进行热处理以至少部分地保持柱状晶粒结构（30）和三角相（32）。

公开(公告)号：EP2888384B1

公开(公告)日：2016-09-28

申请号：EP13831687.2

申请日：2013-06-28

Applicant: United Technologies Corporation

Inventor： DEMICHAEL, Thomas ,  DAS, Gopal ,  MOULIN, Michael A.

IPC: C22F1/18 ,  C21D1/62 ,  C22C14/00 ,  C22C21/00

CPC classification number: C22F1/183 ,  C21D1/62 ,  C21D2221/00 ,  C22C14/00 ,  C22C21/00 ,  C22F1/18

Abstract: A method for forming a part having a dual property microstructure includes the steps of: forming a blank having a narrow top portion and a wide base portion; heating the blank to an elevated temperature; and forming a dual property microstructure in the blank by cooling different portions of the blank at different cooling rates.