| 摘要 |
A method of heat treating 9Ni-4Co-0.30C class steel alloy uses shortened treatment time for normalizing, austenitizing, and tempering, as well as a lower tempering temperature, when compared to conventional heat treatment for this class of alloy material. The improved process is especially beneficial for large section parts, resulting in increases in yield and ultimate strength, combined with substantial increases in impact toughness.
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