Preparation method of nano-oxide dispersion strengthened steel
AssigneeHuazhong University of Science and Technology
InventorsShengming Yin, Guoqiang Yi, Youwei Yan, Yaju Zhou, Haicheng Tian
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Abstract
The present disclosure belongs to the field of materials with metal structures, and specifically relates to a preparation method for a nano-oxide dispersion strengthened steel. The method includes mixing a ferrochromium alloy, a ferrotungsten alloy, a ferroalloy containing a rare earth element, an oxygen source and a reduced iron powder to obtain a mixture; wrapping the mixture in a steel strip, and conducting drawing reducing to obtain a flux-cored wire; and conducting arc additive manufacturing on the flux-cored wire on a substrate, and then conducting heat treatment to obtain the nano-oxide particle dispersion strengthened steel.
Claims8
A preparation method of a nano-oxide dispersion strengthened steel, comprising the following steps:
- mixing a ferrochromium alloy, a ferrotungsten alloy, a ferroalloy containing a rare earth element, an oxygen source and a reduced iron powder to obtain a mixture, wherein, a mass ratio of the ferrochromium alloy, the ferrotungsten alloy, the ferroalloy containing a rare earth element, the oxygen source, and the reduced iron powder is (12.86-20):(1.33-2.67):(8.33-16.67):(0.2-0.4):(60.26-77.28);
- wrapping the mixture in a steel strip, and conducting drawing reducing to obtain a flux-cored wire;
- and
- conducting arc additive manufacturing on the flux-cored wire on a substrate, and then conducting heat treatment to obtain the nano-oxide particle dispersion strengthened steel;
- wherein, the heat treatment is conducted at a temperature of 800-1,100° C. for 1-5 h.
Dependencies are inferred from the claim text.