公开(公告)号：US20240026509A1

公开(公告)日：2024-01-25

申请号：US18355913

申请日：2023-07-20

申请人： Carpenter Technology Corporation

发明人： Austin Dicus ,  Stephane Alexis Jacques Forsik

IPC分类号： C22C38/58 ,  C22C38/52 ,  C22C38/44 ,  C22C38/42 ,  C22C38/00 ,  B33Y70/00 ,  C22C33/04 ,  B22F1/05 ,  B22F1/065 ,  B22F9/08 ,  C21D8/00 ,  C21D6/00 ,  C21D1/18 ,  C21D1/60

CPC分类号： C22C38/58 ,  C22C38/52 ,  C22C38/44 ,  C22C38/42 ,  C22C38/001 ,  B33Y70/00 ,  C22C33/04 ,  B22F1/05 ,  B22F1/065 ,  B22F9/082 ,  C21D8/005 ,  C21D6/004 ,  C21D6/005 ,  C21D6/007 ,  C21D1/18 ,  C21D1/60 ,  B22F2301/35 ,  B22F2009/086 ,  B22F2998/10 ,  B22F2999/00 ,  B22F2201/50 ,  B22F2201/10 ,  B22F2201/20 ,  B22F2009/0824 ,  C21D2211/005 ,  C21D2211/001

摘要： Disclosed herein are duplex stainless steel alloys comprising 40 wt %-60 wt % ferrite and 60 wt %-40 wt % austenite and methods of formation thereof, the alloys including or consisting essentially of



from 10 wt % to 20 wt % chromium (Cr);
from 6 wt % to 13 wt % molybdenum (Mo);
from 0.5 wt % to 6.5 wt % nickel (Ni);
from 2.25 wt % to 12 wt % manganese (Mn);
from 0.05 wt % to 5 wt % copper (Cu);
from 0.05 wt % to 0.4 wt % nitrogen (N);
from 0.05 wt % to 0.35 wt % carbon (C);
from 0.01 wt % to 3.5 wt % cobalt (Co);
less than 2 wt % silicon (Si);
less than 2 wt % tungsten (W); and
iron (Fe) balance.

The duplex stainless steel alloy may include cast or wrought steel, or it may be in powder form.

公开(公告)号：US20230193439A1

公开(公告)日：2023-06-22

申请号：US18083261

申请日：2022-12-16

申请人： Carpenter Technology Corporation

发明人： Stephane Alexis Jacques Forsik ,  Mario Epler ,  Alojz Kajinic ,  Gaurav Lalwani ,  Logan Smith

IPC分类号： C22C38/58 ,  C22C38/52 ,  C22C38/44 ,  C22C38/42 ,  C22C38/02 ,  C22C38/00 ,  C21D6/00

CPC分类号： C22C38/58 ,  C22C38/52 ,  C22C38/44 ,  C22C38/42 ,  C22C38/02 ,  C22C38/001 ,  C21D6/008 ,  C21D6/007 ,  C21D6/005 ,  C21D6/004 ,  C23C8/08

摘要： A method for fabricating an article includes forming a billet consisting essentially of a stainless steel composition of



manganese 2.00 wt. %-24.00 wt. %
chromium 19.00 wt. %-30 wt. %
molybdenum 0.50 wt. %-4.0 wt. %
nitrogen 0.25 wt. %-1.10 wt. %
carbon ≤1 wt. %
phosphorus ≤0.03 wt. %
sulfur ≤1 wt. %
nickel