钕含量对9Cr-3Co-3W-Nd-B钢蠕变性能的影响

IF 0.3 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan Pub Date : 2022-07-15 DOI:10.2355/tetsutohagane.tetsu-2021-103

T. Hamaguchi, M. Mitsuhara, Hideto Kusuhara

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引用次数: 0

摘要

研究了钕含量对9Cr-3Co-3W-Nd-B钢蠕变性能和金相组织的影响。当掺量为0.056质量%时，钕对合金的蠕变断裂强度影响不大。这表明，在正火和回火热处理后，钕化合物和固溶钕对显微组织和均匀蠕变零件的影响最小。另一方面，钕的加入提高了蠕变断裂后的收缩率。不含钕的钢在奥氏体晶界处发生蠕变断裂。因此，钕最终附着在奥氏体晶界处的分离硫上，抑制了蠕变裂纹的形成。

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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Effect of Neodymium Content on Creep Properties of 9Cr-3Co-3W-Nd-B Steel

: The effects of the neodymium content on the creep properties and metallographic structure of 9Cr-3Co-3W-Nd-B steel were investigated. Neodymium had a mild effect on the creep rupture strength at contents up to 0.056 mass%. This suggested that the effects of neodymium compounds and solid-dissolved neodymium were minimal in the microstructures and uniformly creep-deformed parts after normalizing and tempering heat treatment. On the other hand, the reduction of area after creep rupture was improved by the addition of neodymium. Creep rupture occurred at the prior austenite grain boundaries on steel with-out neodymium. Therefore, neodymium conclusively adhered to the segregated sulfur at the prior austenite grain boundaries to suppress the formation of creep cracks.

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来源期刊

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan 工程技术-冶金工程

CiteScore

0.70

自引率

33.30%

发文量

审稿时长

6-12 weeks

期刊介绍： The journal ISIJ International first appeared in 1961 under the title Tetsu-to-Hagané Overseas. The title was changed in 1966 to Transactions of The Iron and Steel Institute of Japan and again in 1989 to the current ISIJ International. The journal provides an international medium for the publication of fundamental and technological aspects of the properties, structure, characterization and modeling, processing, fabrication, and environmental issues of iron and steel, along with related engineering materials. Classification I Fundamentals of High Temperature Processes II Ironmaking III Steelmaking IV Casting and Solidification V Instrumentation, Control, and System Engineering VI Chemical and Physical Analysis VII Forming Processing and Thermomechanical Treatment VIII Welding and Joining IX Surface Treatment and Corrosion X Transformations and Microstructures XI Mechanical Properties XII Physical Properties XIII New Materials and Processes XIV Social and Environmental Engineering.