1results about How to "Improve the distribution pattern" patented technology

The invention relates to high-strength anti-cracking GH3536 alloy powder for additive manufacturing based on niobium-lanthanum synergistic modification and a preparation method thereof, and relates to the technical field of powder for metal additive manufacturing. Niobium is added in the mother alloy smelting stage, lanthanum is excessively added for deep purification, and harmful impurities are removed; then, according to the atomization powder manufacturing process type, the time for adding the lanthanum element for the second time is accurately selected; in the solid electrode atomization process, adding is compensated through vacuum self-consuming remelting in the process of preparing a solid alloy electrode bar; the molten metal atomization process is added after alloy liquid is melted down and before atomization is started. Through step-by-step accurate regulation and control, the lanthanum content in the final powder is in a proper range, the formation of grain boundary continuous brittle carbides is effectively inhibited, the crack resistance is improved, meanwhile, the niobium element generates fine carbides in situ to play the roles of fine grain strengthening and dispersion strengthening, and the tensile strength of the material is improved.