Heat-treating method

Details Heat-treating method Heat-treating method

C - Chemistry, Metallurgy

22

C

75/1, 148/36

C22C 9/04 (2006.01) C21D 9/00 (2006.01)

Patent

CA 1038653

ABSTRACT OF INVENTION Methods for modifying the temperatures at which metallic o compositions capable of undergoing reversible transformation from the austenitic state to the martensitic state will undergo such transformation and a method for inhibiting the loss of such reversibility are disclosed. The method for inhibiting loss of reversibility between the martensitic and austenitic state com- prises holding a metallic composition which is in the austenitic state at a temperature above the temperature at which transforma- tion to the martensitic state starts for a time sufficient to reduce the loss of reversibility. Articles made form the com- positions may be used as couplings for hydraulic lines.

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