Method for heat treating a part made of an FeCoV alloy
OwnerNiklas VOLBERS, Manuel DEMPERinventors
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Abstract
A method for heat treatment of a part made of an FeCoV alloy that consists substantially of 30 wt. %≤Co≤55 wt. %, preferably 45 wt. %≤Co≤50 wt. %, 0.5 wt. %≤V≤2.5 wt. %, 0 wt. %≤Ta≤1 wt. %, 0 wt. %≤Nb≤1 wt. %, up to 1 wt. % of impurities and the remainder of Fe, and being heat-treated at a temperature T0 for a period th, where th≤1 h, then cooled to a temperature T1 at a first cooling rate CR1, where T1<T0, and then cooled from temperature T1 to a temperature T2 at a second cooling rate CR2, where T2<T1, 800° C.≤T0≤T(α→α+γ)+20° C., 400° C.≤T1≤700° C., 100° C.≤T2≤400° C., 50 K/h≤CR1≤300 K/h and CR2>250 K/h and CR2>CR1.
Claims21
A method for heat treating a part made of a FeCoV alloy, the method comprising:
- providing at least one part made of an FeCoV alloy consisting substantially of 30 wt. %≤Co≤55 wt. %, preferably 45 wt. %≤Co≤50 wt. %, 0.5 wt. %≤V≤2.5 wt. %, 0 wt. %≤Ta≤1 wt. %, 0 wt. %≤Nb≤1 wt. %, up to 1 wt. % of impurities and the remainder Fe;
- and
- heat treating this at least one part at a temperature T0 for a period th, where th≤1 h, followed by the cooling of the part to a temperature T1 at a first cooling rate CR1, where T1<T0, and then the cooling of the part from temperature T1 to a temperature T2 at a second cooling rate CR2, where T2<T1, 800° C.≤T0≤T(α→α+γ)+20° C., 400° C.≤T1≤700° C., 100° C.≤T2≤400° C., 50 K/h≤CR1≤300 K/h and CR2>250 K/h and CR2>CR1.
Dependencies are inferred from the claim text.