Service Experiences of 12Cr-1Mo-1W-V-Nb Steel and 9Cr-2Mo Steel in a Power Boiler

Masuyama, Fujimitsu; Daikoku, Takashi; Haneda, H.; Yoshikawa, Kunihiko; Iseda, A.; Teranishi, Hiroshi

doi:10.1007/978-94-009-1347-9_24

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2001

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“…3) Moreover, it has been reported that W addition can improve creep strength of conventional Mo-containing heat-resistant steels (9Cr-0.5Mo-1.8W-V-Nb steels (ASTM T92, P92), 4) 11Cr-0.4Mo-2W-V-Nb steels (ASTM T122, P122) 5) ), and therefore, fundamental studies concerning strengthening mechanism of W have been encouraged. 6,7) In this report, the role of W on the improved creep strength is discussed in a comparison of microstructural evolution during creep tests in the low-activation 9Cr-2W-0.2V-Ta steel and the conventional 9Cr-1Mo-0.2V-Nb steel.…”

Section: Introductionmentioning

confidence: 99%