Methods of making and treating copper-based alloy compositions and products formed therefrom

Patent metadata

Field	Value
Publication number	US-2016102392-A1
Application number	US-201514880217-A
Country	US
Kind code	A1
Filing date	Oct 10, 2015
Priority date	Apr 6, 2012
Publication date	Apr 14, 2016
Grant date	—

Abstract

A ternary alloy wherein copper, manganese, and a ternary element are melted together and cast into an article and the article is subjected to an age-hardening treatment. A process for producing an age-hardened copper-manganese-nickel alloy, the process including melting a composition comprising copper, manganese and nickel; pouring the molten composition comprising copper, manganese, and nickel to form a casting with a composition comprising copper, manganese, and nickel, and aging the casting so produced. An article containing copper, manganese, and a ternary element, in a cast form and the cast form has subsequently undergone age-hardening treatment. A ternary alloy comprising copper, manganese, and a ternary element melted together and solidified into a casting, wherein the microstructure of the casting produced shows substantially low microporosity attributable to dendritic solidification.

First claim

1 . A ternary alloy comprising:
copper; manganese; and a ternary element,
wherein copper, manganese, and the ternary element are melted together and cast into an article and the article is subjected to an age-hardening treatment.

2 . The ternary alloy of claim 1 , the ternary element is nickel.

3 . The ternary alloy of claim 2 , weight percent of nickel is in the range of about 1 to about 25 and the weight percent of manganese is in the range of about 35 to about 55.

4 . The ternary alloy of claim 3 , the age-hardening in the range of 300° C. to 600° C. for a time period.

5 . The ternary alloy of claim 4 , wherein the time period is in the range of 1 hour to 100 hours.

6 . A process for producing an age-hardened copper-manganese-nickel alloy comprising:
melting a composition comprising copper, manganese and nickel; pouring the molten composition comprising copper, manganese, and nickel to form a casting with a composition comprising copper, manganese, and nickel; and aging the casting produced at a temperature in the range of 300° C. to 600° C. for a time period.

7 . The process of claim 6 , wherein the time period is in the range of 1 hour to 100 hours.

8 . The process of claim 6 , weight percent of nickel is in the range of about 1 to about 25 and the weight percent of manganese is in the range of about 35 to about 55.

9 . The process of claim 8 , wherein the time period is in the range of 1 and 100 hours.

10 . An article comprising:
copper; manganese; and a ternary element, wherein copper, manganese and the ternary element are in a cast form and the cast form has subsequently undergone age-hardening treatment and contains a precipitated phase.

11 . The article of claim 10 , the ternary element is nickel.

12 . The article of claim 11 , weight percent of nickel is in the range of about 1 to about 25 and the weight percent of manganese is in the range of about 35 to about 55.

13 . The article of claim 12 , the age-hardening treatment includes aging in the temperature range of 300° C. to 600° C. for a time period in the range of 1 hour to 100 hours.

14 . The article of claim 11 , the article is a plumbing valve or fitting.

15 . The article of claim 12 , the article is a plumbing valve or fitting.

16 . The article of claim 13 , the article is a plumbing valve or fitting.

17 . A ternary alloy comprising copper, manganese, and a ternary element melted together and solidified into a casting, wherein the microstructure of the casting produced exhibits substantially low microporosity attributable to dendritic solidification.

18 . The ternary alloy of claim 17 , the ternary element is nickel.

19 . The ternary alloy of claim 18 , weight percent of nickel is in the range of about 1 to about 25 and the weight percent of manganese is in the range of about 35 to about 55.

20 . The ternary alloy of claim 1 , the ternary element is one of cobalt, zinc, chromium, and iron.

21 . The article of claim 10 , the ternary the ternary element is one of cobalt, zinc, chromium, and iron.

22 . The ternary alloy of claim 17 , the ternary element is one of cobalt, zinc, chromium, and iron.

23 . The ternary alloy of claim 1 , wherein the age-hardening treatment is preceded by a solution treatment.

24 . The process of claim 10 , wherein the aging of the casting is preceded by a solution treatment.

25 . The ternary alloy of claim 23 , wherein the solution treatment temperature is in the range of 700° C. to 850° C.

26 . The process of claim 24 , wherein the solution treatment temperature is in the range of 700° C. to 850° C.

Assignees

• Purdue Research Foundation

Inventors

• Trumble Kevin Paul
• Chaput Kevin Joseph

Classifications

• C22C30/02

  containing copper · CPC title

• C22F1/08

  of copper or alloys based thereon · CPC title

• C22F1/16 Primary

  of other metals or alloys based thereon · CPC title

• C22C22/00

  Alloys based on manganese · CPC title

• C22C9/00

  Alloys based on copper · CPC title