Title:
METHOD FOR REFORMING AND STRENGTHENING HEAT-RESISTING MATERIAL, AND MEMBER FOR HIGH TEMPERATURE HAVING CREEP PROPERTY STRENGTHENED AT WELD HEAT-AFFECTED ZONE
Document Type and Number:
Japanese Patent JP3793966
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve a creep property of a fresh material (including a renewed material) or an aged and deteriorated material of a heat resisting material, by introducing or infiltrating such a grain-boundary-strengthening element as to affect the creep strength and/or the fatigue strength into a base metal or a weld heat-affected zone, and to extend the life of the heat resisting material.
SOLUTION: A method for reforming and strengthening the heat resisting material is characterized by jointing and diffusing such the grain-boundary-strengthening element as to affect the creep strength and/or the fatigue strength to the surface of the base metal or the weld heat-affected zone of the fresh material or the aged and deteriorated material, to improve the creep property of the base metal or the weld heat-affected zone, wherein the grain-boundary-strengthening material contains one or more elements selected from the grain-boundary-strengthening group of B, Hf, Zr, W, V, Nb, Ti and the other elements.
Inventors:
Shintani Shizuma
Hidetaka Nishida
Hiroshi Yamaguchi
Hidetaka Nishida
Hiroshi Yamaguchi
Application Number:
JP2002252431A
Publication Date:
July 05, 2006
Filing Date:
August 30, 2002
Export Citation:
Assignee:
Chugoku Electric Power Co., Inc.
International Classes:
C23C8/42; C23C4/02; C23C4/18; (IPC1-7): C23C8/42; C23C4/02; C23C4/18
Domestic Patent References:
| JP3087351A | ||||
| JP58052470A | ||||
| JP49130839A | ||||
| JP60059059A | ||||
| JP2298251A | ||||
| JP11006039A |
Attorney, Agent or Firm:
Yasuo Mihara
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