| 摘要 |
A method of manufacturing an improved Fe-Ni alloy consisting of 33-37% Ni; 0.001-0.1% Mn; optionally, 0.01-2% Co; and at least one of (1) 0.01-0.8% Nb; (2) 0.01-0.8% Ta; and/or (3) 0.01-0.8% Hf, with the total of Nb, Ta and Hf being in the range of 0.01-0.8% and the remainder being Fe and unavoidable impurities. The method comprises subjecting the alloy to a hot rolling process wherein the rate of distortion during each pass of hot rolling is below 70/second resulting in the alloy having a reduced rate of crack formation during the hot rolling process, and high drop-shock resistance and low thermal expansion after the hot rolling process.
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