Effect of tempering temperature on microstructure and mechanical properties of laser additive manufacturing repaired AISI 403 steel

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-09-22 DOI:10.1016/j.jmrt.2025.09.193

Siyu Chen , Yong Zhang , Chunzhi Zhao , Baoxian Su , Li Xu , Chen Liu , Bao Ding , Chao Xu , Eshov Bakhtiyor , Liang Wang , Yanqing Su

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Abstract

Martensitic stainless steel is widely used in the manufacturing of steam turbine blades, but the blades are prone to damage during long-term operation. As an advanced manufacturing method, additive manufacturing technology has been successfully applied in the field of metal repair. This study employed powder-fed laser additive manufacturing technology to repair AISI 403 steel, investigating the impact of tempering temperature on the mechanical properties of the repaired components. Through microstructural and mechanical property analyses, the optimal tempering temperature was determined to be 750 °C. After tempering at this temperature, the repaired components achieved excellent comprehensive mechanical properties: a yield strength of 555.4 ± 21.7 MPa, an ultimate tensile strength of 775.9 ± 27.8 MPa, and an elongation of 19.5 ± 2.5 %. The results indicate that the strength of the repaired part is higher than that of the base material, while maintaining a certain level of plasticity, providing theoretical basis and technical reference for the repair of steam turbine blades.

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回火温度对激光增材制造修复AISI 403钢组织和力学性能的影响

马氏体不锈钢广泛用于汽轮机叶片的制造，但叶片在长期运行过程中容易损坏。增材制造技术作为一种先进的制造方法，已成功应用于金属修复领域。采用粉末喂料激光增材制造技术修复AISI 403钢，研究回火温度对修复件力学性能的影响。通过组织和力学性能分析，确定了最佳回火温度为750℃。在此温度下回火后，修复后的零件获得了优异的综合力学性能：屈服强度为555.4±21.7 MPa，极限抗拉强度为775.9±27.8 MPa，伸长率为19.5±2.5%。结果表明，修复件的强度高于母材，同时保持了一定的塑性水平，为汽轮机叶片的修复提供了理论依据和技术参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Materials Research and Technology-Jmr&t Materials Science-Metals and Alloys

CiteScore

8.80

自引率

9.40%

发文量

1877

审稿时长

35 days

期刊介绍： The Journal of Materials Research and Technology is a publication of ABM - Brazilian Metallurgical, Materials and Mining Association - and publishes four issues per year also with a free version online (www.jmrt.com.br). The journal provides an international medium for the publication of theoretical and experimental studies related to Metallurgy, Materials and Minerals research and technology. Appropriate submissions to the Journal of Materials Research and Technology should include scientific and/or engineering factors which affect processes and products in the Metallurgy, Materials and Mining areas.