Industry
Central Iron and Steel Research Institute: High-N, Al-Containing 25Cr-Type Duplex Stainless Steel Powder
2026-10-27
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Impact score: 60
Patent CN122669314A, applied for by Central Iron and Steel Research Institute Co., Ltd. (publication date September 1, 2026), discloses a high-N, Al-containing 25Cr-type duplex stainless steel powder and a laser powder bed fusion (LPBF) method therefor. The invention aims to address the problems of molten pool disturbance, elemental loss, and increased cracking risk caused by high nitrogen content during LPBF processing of high-nitrogen duplex stainless steels. The powder composition features specific ratios of Cr, Mo, Ni, N, and Al, with the goal of achieving stable fusion and macro-crack-free forming in laser powder bed fusion.
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钢铁研究总院：高N含Al的25Cr型双相不锈钢粉末
钢铁研究总院有限公司申请的专利CN122669314A（公布日2026年9月1日）公开一种高N含Al的25Cr型双相不锈钢粉末及其激光粉末床熔融方法，旨在解决高氮双相不锈钢在LPBF成形中因氮含量高导致的熔池扰动、元素逸出和开裂风险放大的问题。粉末组分含特定Cr、Mo、Ni、N、Al配比，目标是在激光粉末床熔融中实现稳定熔合和无宏观热裂纹成形。