23 Jul Nitrogen-containing high-entropy alloy composite material and preparation method thereof
Abstract
The invention belongs to the field of alloys, in particular to a nitrogen-containing high-entropy alloy composite material and a preparation method thereof. The nitrogen-containing high-entropy alloycomposite material has mixed crystal tissues with coarse crystals and fine crystals alternately distributed. The preparation method comprises the following steps: I, preparing nitrogen-containing high-entropy pre-alloy powder, wherein metal elements in the nitrogen-containing high-entropy pre-alloy powder are selected from at least three of Fe, Co, Cr, Ni and Mn; and S2, shaping the nitrogen-containing high-entropy pre-alloy powder obtained in the S1 by means of the selective laser melting technique to obtain the high-entropy alloy. The preparation process is simple and controllable. The obtained product is fine and uniform in tissue, uniform in nitrogen distribution in a blank, also uniform in integral nitrogen distribution, good in mechanical property and good in corrosion resistance, thereby, providing necessary conditions for engineering applications of the nitrogen-containing high-entropy alloy.
Year: 2019
Country: CN
Doc No: 110548869