Method for providing strong wire and strip

Details Method for providing strong wire and strip Method for providing strong wire and strip

C - Chemistry, Metallurgy

21

D

148/31.1

C21D 7/10 (2006.01) C21D 8/02 (2006.01) C21D 8/06 (2006.01)

Patent

CA 1060321

A METHOD FOR PROVIDING STRONG WIRE AND STRIP ABSTRACT OF THE DISCLOSURE A method for improving the strength of wire or strip having a composition which consists essentially of an austenitic metal alloy selected from the group consisting of stainless steel alloys of the AISI 200 and 300 series and non-stainless steel alloys containing iron, manganese, chromium, and carbon, said alloy having an Md temperature of no higher than about 100°C and an Ms temperature of no higher than about minus 100°C comprising the following step. stretching the wire or strip uniaxially at a strain of at least about 10 percent and at a temperature no higher than about minus 75°C in such a manner that the wire or strip has a martensite phase of at least about 50 percent by volume and an austenite phase of at least about 10 percent by volume.

266098

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