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Title:
WELDING MATERIAL FOR Ni-BASED HEAT-RESISTANT ALLOY, AND WELDED METAL AND WELDED JOINT EACH USING SAME
Document Type and Number:
WIPO Patent Application WO/2011/158706
Kind Code:
A1
Abstract:
Disclosed is a welding material for an Ni-based heat-resistant alloy, which has a chemical composition that contains 0.06-0.18% of C, 0.5% or less of Si, 1.5% or less of Mn, 46-56% of Ni, 10-15% of Co, 20-25% of Cr, more than 10.0% but 14.0% or less of Mo, 0.01-0.5% of Ti, 0.1-1.0% of Al and 0.006% or less of N, and additionally if necessary, 0.1% or less of Nd with the balance made up of Fe and impurities, while controlling O, P and S contained as impurities to 0.02% or less, 0.008% or less, and 0.005% or less, respectively. The welding material for an Ni-based heat-resistant alloy exhibits excellent high-temperature cracking resistance during the welding. A welded metal that has high-temperature cracking resistance during the welding, stress relaxation cracking resistance when in use for a long period of time at high temperatures, and good creep strength can be provided using the above-described welding material. In addition, a welded joint can be provided using the above-described welding material, said welded joint being composed of a base of an Ni-based heat-resistant alloy that has excellent high-temperature strength and a welded metal that has high-temperature cracking resistance during the welding, stress relaxation cracking resistance when in use for a long period of time at high temperatures, and good creep strength.

Inventors:
HIRATA HIROYUKI (JP)
YOSHIZAWA MITSURU (JP)
OGAWA KAZUHIRO (JP)
ISEDA ATSURO (JP)
SEMBA HIROYUKI (JP)
Application Number:
PCT/JP2011/063097
Publication Date:
December 22, 2011
Filing Date:
June 08, 2011
Export Citation:
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Assignee:
SUMITOMO METAL IND (JP)
HIRATA HIROYUKI (JP)
YOSHIZAWA MITSURU (JP)
OGAWA KAZUHIRO (JP)
ISEDA ATSURO (JP)
SEMBA HIROYUKI (JP)
International Classes:
B23K35/30; C22C19/05
Foreign References:
JP2002235136A2002-08-23
JPH09108888A1997-04-28
JP2009195980A2009-09-03
Attorney, Agent or Firm:
SUGIOKA, Kanji et al. (JP)
Sugioka Miki 2 (JP)
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Claims:



 
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