US2017349975A1PendingUtilityA1
Metal alloys including copper
Assignee: ADVANCED ALLOY HOLDINGS PTY LTDPriority: Oct 28, 2014Filed: Oct 27, 2015Published: Dec 7, 2017
Est. expiryOct 28, 2034(~8.3 yrs left)· nominal 20-yr term from priority
C22C 9/06C22F 1/00C22F 1/16C22C 45/00C22C 30/02C22C 2202/02C22C 30/06C22C 30/04C22C 9/02C22C 9/04C22C 9/10C22C 9/01C22C 9/05
43
PatentIndex Score
0
Cited by
0
References
0
Claims
Abstract
The present invention relates to metal alloys including copper.
Claims
exact text as granted — not AI-modified1 . An alloy consisting of:
Copper
10 to 50 at. %
Nickel
5 to 50 at. %
Manganese
5 to 50 at. %
Zinc
0 to 50 at. %
Aluminium
0 to 40 at. %
Tin
0 to 40 at. %
Chromium
0 to 2 at. %
Iron
0 to 2 at. %
Cobalt
0 to 2 at. %
Lead
0 to 2 at. %
Silicon
0 to 25 at. %
and wherein the alloy has entropy of mixing (ΔS mix ) of at least 1.1R when calculated according to:
Δ
S
mix
=
-
R
∑
i
=
1
n
(
c
i
lnc
i
)
(
Equation
1
)
where c is the molar percentage of the ith component and R is the gas constant.
2 . An alloy as defined in claim 1 , wherein the alloy includes any one or more of:
Aluminium
1 to 30 at. %
Tin
1 to 30 at. %
Zinc
1 to 50 at. %
Silicon
1 to 25 at. %
3 . An alloy of claim 1 consisting of:
Copper
10 to 50 at. %
Nickel
5 to 50 at. %
Manganese
5 to 50 at. %
Chromium
0 to 2 at. %
Iron
0 to 2 at. %
Cobalt
0 to 2 at. %
Lead
0 to 2 at. %, and one of:
Zinc
1 to 50 at. %
Aluminium
1 to 40 at. %
Tin
1 to 40 at. % or
Silicon
1 to 25 at. %
and wherein the alloy has entropy of mixing (ΔS mix ) of at least 1.1R when calculated according to:
Δ
S
mix
=
-
R
∑
i
=
1
n
(
c
i
lnc
i
)
(
Equation
1
)
where c is the molar percentage of the ith component and R is the gas constant.
4 . An alloy consisting of copper and three alloying elements selected from nickel, manganese, zinc, aluminium and tin and wherein the alloy has entropy of mixing (ΔS mix ) of at least 1.1R when calculated according to:
Δ
S
mix
=
-
R
∑
i
=
1
n
(
c
i
lnc
i
)
(
Equation
1
)
where c is the molar percentage of the ith component and R is the gas constant.
5 . An alloy comprising copper and three or more alloying elements selected from nickel, manganese, zinc, aluminium and tin and wherein the alloy has entropy of mixing (ΔS mix ) of at least 1.1R when calculated according to:
Δ
S
mix
=
-
R
∑
i
=
1
n
(
c
i
lnc
i
)
(
Equation
1
)
where c is the molar percentage of the ith component and R is the gas constant.
6 . The alloy defined in claim 5 , wherein the alloy further comprises one or more alloying elements selected from the group consisting of:
Chromium
0 to 2 at. %
Iron
0 to 2 at. %
Cobalt
0 to 2 at. %
Lead
0 to 2 at. %
Silicon
0 to 25 at. %
7 . The alloy defined in any one of claims 1 to 6 , wherein the alloy has entropy in the range of 1.1R to 2.5R.
8 . The alloy defined in any one of claims 1 to 6 , wherein the alloy has entropy in the range of 1.3 to 2.0R.
9 . The alloy defined in any one of claims 1 to 8 , wherein the copper, nickel and manganese are present in substantially equal atomic percentages.
10 . The alloy defined in any one of claims 1 to 9 , wherein the alloy consists of [Cu+Mn+Ni] 60 to 95 at. % with the balance being Al.
11 . The alloy defined in any one of claims 1 to 10 , wherein the alloy consists of Cu, Mn, Ni and Al and has an as-cast hardness (H V ) in the range of 154 to 398.
12 . The alloy defined in any one of claims 1 to 9 , wherein the alloy consists of [Cu+Mn+Ni] 75 to 95 at. % with the balance being Si.
13 . The alloy defined in any one of claims 1 to 9 or 12 , wherein the alloy consists of Cu, Mn, Ni and Si and has an as-cast hardness (H V ) in the range of 187 to 370.
14 . The alloy defined in any one of claims 1 to 9 , wherein the alloy consists of [Cu+Mn+Ni] 75 to 95 at. % with the balance being Sn.
15 . The alloy defined in any one of claims 1 to 9 or 14 , wherein the alloy consists of Cu, Mn, Ni and Sn and has an as-cast hardness (H V ) in the range of 198 to 487.
16 . The alloy defined in any one of claims 1 to 9 , wherein the alloy consists of [Cu+Mn+Ni] 50 to 95 at. % with the balance being Zn.
17 . The alloy defined in any one of claims 1 to 9 or 16 , wherein the alloy consists of Cu, Mn, Ni and Zn and has an as-cast hardness (H V ) in the range of 102 to 253.
18 . The alloy defined in any one of claims 1 to 9 , wherein the alloy is a quinary alloy consisting of [Cu+Mn+Ni] 50 to 95 at. % with the balance being Al and Zn.
19 . The alloy defined in any one of claims 1 to 9 or 18 , wherein the alloy consists of Cu, Mn, Ni, Al and Zn and has an as-cast hardness (H V ) in the range of 200 to 303.
20 . The alloy defined in any one of claims 1 to 9 , wherein the alloy is a quinary alloy consisting of [Cu+Mn+Ni] 75 to 90 at. % with the balance being Al and Sn.
21 . The alloy of any one of claims 1 to 9 , wherein the alloy is a quinary alloy consisting of [Cu+Mn+Ni] 50 to <100 at. % with the balance being Sn and Zn.
22 . The alloy defined in any one of claim 1 to 9 , wherein the alloy consists of Cu, Mn, Ni, Al, Zn, Sn and comprises a single phase or duplex phase brass.
23 . The alloy defined in any one of claims 1 to 22 , wherein the alloy has compressive yield strength in the range of 140 to 760 MPa.
24 . The alloy defined in any one of claims 1 to 23 , wherein the alloy has strain at compressive failure of <2% to 80%.Join the waitlist — get patent alerts
Track US2017349975A1 — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.