Classifications

• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22C—ALLOYS
  • C22C9/00—Alloys based on copper
  • C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22C—ALLOYS
  • C22C9/00—Alloys based on copper
  • C22C9/04—Alloys based on copper with zinc as the next major constituent

Definitions

• This invention relates to a nickel silver alloy which has improved hot working properties, and more particularly, it relates to the addition of fractional amounts of titanium to a nickel silver alloy to form a nickel silver alloy that can be hot rolled.
• Nickel silvers have poor hot working properties and cannot be reduced by hot rolling without severe cracking of the rolled metal.
• Nickel silvers have essentially two phases, a single-phase alpha nickel silver and a two-phase alpha-beta nickel silver.
• the alpha-beta nickel silver can be hot-worked but not with the results ordinarily achieved with brasses; the alpha nickel silvers have never been successfully hotworked without the cracking problem mentioned above, and therefore they are used in applications requiring ductility in the cold condition as they have good cold working properties.
• the reduction of alpha nickels by cold rolling is an expensive process because they work-harden rapidly and require frequent anneals, and they are prone to fire cracking during annealing which causes considerable metal loss.
• the nickel silver alloy of the invention is comprised of 45 to 75 percent by weight Cu, 7 to 30 percent by weight Ni, 5 to 43 percent by weight Zn and 0.003 to 0.3 percent Ti.
• alpha nickel silvers which are comprised of 45 to percent by weight Cu, 7 to 25 percent by weight Ni, 5 to 32 percent by weight Zn, it is preferred to include from about 0.003 to 0.1 percent by weight Ti.
• alpha nickel silvers is meant a copper-nickel-zinc alloy containing 45 to 75 percent by weight Cu, 7 to not more than about 25 percent by weight Ni, and 5 to not more than about 32 percent by weight Zn, which, under conditions of structural equilibrium comprise a single solid solution, isomorphous with copper; above about 32 percent Zn, the alpha-beta nickel silver phase appears.
• Heat B Heat 0 Heat D The cakes were soaked at 900 C. for four hours prior to hot rolling. Hot rolling temperatures ranged from 860 C. to 900 C. All cakes were hot rolled to 0.500 gauge in 15 passes without evidence of cracking or other hot rolling defects.
• a nickel silver alloy with improved hot working properties consisting essentially of 730% Ni, 543% 3 Zn, G.OO3O.3% Ti and the balance essentially Cu, said Cu being present in the range of 4575%.
• a nickel silver alloy With improved hot Working properties consisting essentially of 7-30% Ni, 5-43% Zn, .O030.1% Ti and the balance essentially Cu, said Cu being present in the range of 45-75%.
• An alpha nickel silver alloy with improved hot working properties consisting essentially of 725% Ni, 532% Zn, 0.003-0.3% Ti and the balance essentially Cu, said Cu being present in the range of 45-75%.
• An alpha nickel silver alloy With improved hot Working properties consisting essentially of 725% Ni, 532% 4, p Zn, 0.003411% Ti and the balance essentially Cu, said Cu being present in the range of 45-75%.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Mechanical Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Metal Rolling (AREA)
• Conductive Materials (AREA)

Priority Applications (5)

Applications Claiming Priority (1)

Publications (1)

Family

ID=23930058

Family Applications (1)

Country Status (4)

Cited By (1)

Citations (4)

Family Cites Families (3)

• 1965
  • 1965-09-08 US US485954A patent/US3372026A/en not_active Expired - Lifetime
• 1966
  • 1966-06-08 GB GB25471/66A patent/GB1073680A/en not_active Expired
  • 1966-06-30 DE DE19661533159D patent/DE1533159B1/de active Pending
  • 1966-07-28 CH CH1096966A patent/CH455296A/fr unknown

Patent Citations (4)

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