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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2010, Vol. 11 Issue (10): 756-760    DOI: 10.1631/jzus.A1000215
    
Microstructure and creep properties of high Cr resisting weld metal alloyed with Co
Xue Wang, Liang-fei Zhan, Qian-gang Pan, Zhi-jun Liu, Hong Liu, Yong-shun Tao
School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China, DongFang Boiler Group Co. Ltd., Zigong 643001, China
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Abstract  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.

Key words： 9Cr steels      Weld metal      Microstructure      Creep properties     
Received: 06 May 2010      Published: 05 October 2010
CLC:  TG423  
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Qian-gang Pan
Zhi-jun Liu
Xue Wang
Liang-fei Zhan
Hong Liu
Yong-shun Tao
Cite this article:

Xue Wang, Liang-fei Zhan, Qian-gang Pan, Zhi-jun Liu, Hong Liu, Yong-shun Tao. Microstructure and creep properties of high Cr resisting weld metal alloyed with Co. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2010, 11(10): 756-760.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A1000215     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2010/V11/I10/756

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