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US 11,767,574 B2Granted
Ultrahigh-strength maraging stainless steel with multiphase strengthening and preparation method thereof
AssigneeHarbin Engineering University
InventorsZhongwu Zhang, Junpeng Li
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Abstract
Disclosed is an ultrahigh-strength maraging stainless steel with multiphase strengthening and a preparation method thereof. The stainless steel has a composition in mass percentage as follows: 1.0-5.0% of Co, 6.0-10.0% of Ni, 11.0-17.0% of Cr, 0.3-2.0% of Ti, 3.0-7.0% of Mo, 0.08-1.0% of Mn, 0.08-0.5% of Si, 0.02% or less of C, 0.003% or less of P, 0.003% or less of S, and Fe as a balance.
Claims11
A method for preparing maraging stainless steel with multiphase strengthening, comprising:
- 1) proportioning alloying elements;
- 2) vacuum smelting for an electrode in a vacuum induction melting furnace;
- 3) vacuum arc remelting;
- 4) homogenizing annealing;
- 5) forging or hot rolling for cogging;
- 6) cold rolling deformation;
- and
- 7) heat treating,
- wherein the maraging stainless steel with multiphase strengthening has a composition as follows in mass percentage:
- 1.0-5.0% of Co, 6.0-10.0% of Ni, 11.0-17.0% of Cr, 0.3-2.0% of Ti, 3.0-7.0% of Mo, 0.08-1.0% of Mn, 0.08-0.5% of Si, 0.02% or less of C, 0.003% or less of P, 0.003% or less of S, and Fe as a balance.
7 more elements
Dependencies are inferred from the claim text.