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Microstructure and creep properties of high Cr resisting weld metal alloyed with Co

Microstructure and creep properties of high Cr resisting weld metal alloyed with Co
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摘要 A 9% Cr ferritic steel weld metal containing 1% Co, partially substituted for nickel, was prepared by submerged arc welding (SAW) processing. The microstructure and creep properties of the weld metal were investigated. The microstructure exhibited a fully tempered martensitic structure free of δ-ferrite. The creep properties of the obtained weld metal were inferior to those of the P92 base metal at 600 and 650 °C. The values of A and n for weld metal in the Norton power law constitution at 650 °C are 1.1×10?21 and 8.1, respectively. A 9% Cr ferritic steel weld metal containing 1% Co, partially substituted for nickel, was prepared by submerged arc welding (SAW) processing. The microstructure and creep properties of the weld metal were investigated. The microstructure exhibited a fully tempered martensitic structure free of δ-ferrite. The creep properties of the obtained weld metal were inferior to those of the P92 base metal at 600 and 650 °C. The values of A and n for weld metal in the Norton power law constitution at 650 °C are 1.1×10?21 and 8.1, respectively.
出处 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2010年第10期756-760,共5页 浙江大学学报(英文版)A辑(应用物理与工程)
基金 Project (No 51074113) supported by the National Natural ScienceFoundation of China
关键词 9Cr steels Weld metal MICROSTRUCTURE Creep properties 抗蠕变性能 焊缝金属 金属合金 高铬 微结构 铁素体钢 马氏体组织 显微组织
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参考文献18

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