, Volume 32, Issue 3, pp 53–59 | Cite as

Unusual Combination of High Strength and Ductility in New Precipitation-Hardenable Nickel Silvers

  • Pierre Maréchal
  • Willy Form
  • Peter Isler
Technical Article


A new series of fine-grained precipitation-hardenable copper alloy is presented. They are characterized above all by an excellent combination of high strength and ductility, and good resistance to atmospheric and tap-water corrosion. Since precipitation is sluggish, alloys do not have to be solution treated after final shape has been given, which reduces considerably the danger of distortion. Furthermore, because of a compensating mechanism in relaxation between matrix and precipitate, dimensional changes during aging are negligible. Finally, machining and cold forming tests under way suggest strongly that these forming processes are readily carried out prior to aging.


Aging Time Copper Alloy Strength Level Excellent Combination Offset Yield Strength 
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Copyright information

© The Minerals, Metals & Materials Society 1980

Authors and Affiliations

  • Pierre Maréchal
    • 1
  • Willy Form
    • 2
  • Peter Isler
    • 3
  1. 1.Institut StraumannWaidenburgSwitzerland
  2. 2.Institute of Structural MetallurgyUniversity of NeuchatelNeuchatelSwitzerland
  3. 3.Boillat CorporationReconvilierSwitzerland

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