公开(公告)号：JPH09170054A

公开(公告)日：1997-06-30

申请号：JP30515796

申请日：1996-11-15

Applicant: ABB MANAGEMENT AG

Inventor： NAZMY MOHAMED DR ,  NOSEDA CORRADO ,  ROESLER JOACHIM DR ,  STAUBLI MARKUS

IPC: C21D6/00 ,  C22C19/05 ,  C22C30/00 ,  C22C38/00 ,  C22C38/08 ,  C22F1/10

公开(公告)号：CA2184960A1

公开(公告)日：1997-05-18

申请号：CA2184960

申请日：1996-09-06

Applicant: ABB MANAGEMENT AG

Inventor： NAZMY MOHAMED DR ,  NOSEDA CORRADO ,  ROESLER JOACHIM DR ,  STAUBLI MARKUS

IPC: C21D6/00 ,  C22C19/05 ,  C22C30/00 ,  C22C38/00 ,  C22C38/08 ,  C22F1/10 ,  C21D6/02 ,  C21D1/26

Abstract: The iron-nickel superalloy of the type IN 706 has an addition of 0.02 to 0.3 percent by weight of boron and/or 0.05 to 1.5 percent by weight of hafnium. By means of this addition, a virtual doubling of the ductility is achieved as compared with an addition-free iron-nickel superalloy of the type IN 706, while the hot strength is reduced only slightly. This alloy is particularly suitable as a material for rotors of large gas turbines. It has a sufficiently high hot strength. When locally acting temperature gradients arise unwanted stresses can occur to only a slight extent because of the high ductility of the alloy.