| 简介 |
A method of forming a superelastic nickel-titanium-rare earth alloy by adding one or more powders which in combination will form the alloy to a powder consolidation unit which includes an electrically conductive die and punch connected to a power supply. The powders are heated at a rate of about 35?°C/min or less to a desired sintering temperature. Pressure is applied to and a pulsed electrical current is passed through the powders and the alloy is formed, e.g. by reaction sintering. After sintering the alloy can be hot worked. Also a sintered nickel-titanium-rare earth ally which comprises (in atomic %) : about 35-65 % nickel, about 35-65 % titanium and about 1.5-15 % rare earth constituent, with the alloy including a rare earth containing phase dispersed in a matrix phase. |
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