公开(公告)号：EP3027340A4

公开(公告)日：2017-03-22

申请号：EP14831529

申请日：2014-07-11

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MARCIN JR JOHN J ,  BULLIED STEVEN J ,  SHAH DILIP M ,  CETEL ALAN D

IPC: B22D17/00 ,  B22C9/04 ,  B22C9/10 ,  B22D17/22 ,  B22D19/00 ,  B22D19/16 ,  B22D27/04 ,  B22D29/00

CPC classification number: B22D25/02 ,  B22C7/02 ,  B22C9/043 ,  B22C9/06 ,  B22C9/10 ,  B22C9/101 ,  B22C9/108 ,  B22C9/24 ,  B22C21/14 ,  B22D15/00 ,  B22D19/00 ,  B22D19/0072 ,  B22D19/16 ,  B22D21/025 ,  B22D27/045 ,  B22D29/00 ,  B22D29/001

Abstract: A method for casting an article comprises a first region and a second region. The method comprises casting an alloy in a shell, the shell having a casting core protruding from a first metal piece; and deshelling and decoring to remove the shell and core and leave the first region formed by the first piece and the second region formed by the casted alloy.

公开(公告)号：EP2890871A4

公开(公告)日：2015-09-09

申请号：EP13832481

申请日：2013-06-04

Applicant: UNITED TECHNOLOGIES CORP

Inventor： SHAH DILIP M ,  CHIN HERBERT A ,  MARCIN JOHN JOSEPH ,  REYNOLDS PAUL L ,  SUCIU GABRIEL L ,  GENEREUX PAUL D

IPC: F01D5/04 ,  C22C19/03 ,  F01D5/28

CPC classification number: C21D9/085 ,  B22D27/045 ,  C21D1/26 ,  C21D8/105 ,  C22C19/03 ,  C22C19/056 ,  C22C38/00 ,  C22F1/10 ,  C30B29/52 ,  C30B33/02 ,  F01D5/02 ,  F05D2220/323 ,  F05D2230/40 ,  F05D2240/60 ,  F05D2300/171 ,  F05D2300/501 ,  F05D2300/606 ,  Y02T50/672

Abstract: High modulus turbine shafts and high modulus cylindrical articles are described as are the process parameters for producing these shafts and cylindrical articles. The shafts/articles have a high Young's modulus as a result of having high modulus crystal texture along the longitudinal axis of the shaft/article. The shafts are produced from directionally solidified seeded single crystal cylinders that are axisymmetrically hot worked before a limited recrystallization process is carried out at a temperature below the recrystallization temperature of the alloy. The disclosed process produces an intense singular texture and results in shaft or cylindrical article with a Young's modulus that is at least 40% greater than that of conventional nickel or iron alloys or conventional steels.