EP 1195449 A3 20031217 - Precipitation hardening of an aluminium alloy
Title (en)
Precipitation hardening of an aluminium alloy
Title (de)
Ausscheidungshärten einer Aluminiumlegierung
Title (fr)
Durcissement par précipitation d'un alliage d'aluminium
Publication
Application
Priority
AT 15632000 A 20000914
Abstract (en)
[origin: EP1195449A2] Three-stage heating and cooling pretreatment, finally stabilizing the grain structure under reducing temperature, for at least 420 hrs, preferably for 1000 hrs, produces stabilized grain structure with good mechanical properties: hardness HB up to 65 (2.5/62.5/16); limiting expansion Rp0.2 up to 140 MPa, preferably 130 MPa; tensile strength Rm up to 270 MPa, preferably 240 MPa; and uniform expansion before area reduction exceeding 18%. If appropriate, after extraction of the component from the mold, it is precipitation-hardened at a temperature of 165 degrees C-190 degrees C, over an interval of 12-38 M.
IPC 1-7
IPC 8 full level
C22F 1/04 (2006.01)
CPC (source: EP)
C22F 1/04 (2013.01)
Citation (search report)
- [Y] EP 0801141 A1 19971015 - HOOGOVENS ALUMINIUM NV [BE]
- [Y] EP 0480402 A1 19920415 - SUMITOMO LIGHT METAL IND [JP]
- [A] US 5728241 A 19980317 - GUPTA ALOK KUMAR [CA], et al
- [A] US 5718780 A 19980217 - BRYANT J DANIEL [US], et al
- [A] WO 9607768 A1 19960314 - ALCAN INT LTD [CA], et al
- [A] US 3135633 A 19640602 - CLAUDE HORNUS JEAN
- [X] J.R.DAVIS: "Metals Handbook - Desk Edition", 1998, ASM INTERNATIONAL, MATERIALS PARK OHIO, XP002255218
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1195449 A2 20020410; EP 1195449 A3 20031217; EP 1195449 B1 20061213; EP 1195449 B3 20210317; AT 408763 B 20020325; AT A15632000 A 20010715; AT E348202 T1 20070115; DE 20101474 U1 20010628; DE 50111626 D1 20070125
DOCDB simple family (application)
EP 01890265 A 20010913; AT 01890265 T 20010913; AT 15632000 A 20000914; DE 20101474 U 20010129; DE 50111626 T 20010913