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AssigneeHitachi, Ltd.
InventorsShinya Imano, Hiroyuki Doi, Kunihiro Ichikawa, Katsumi Tanaka
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A Ni-based alloy member has resistance against grain boundary fracture, fatigue strength, and oxidation resistance at temperatures near 1000° C. or higher. The Ni-based alloy member includes a non-repaired region made of a Ni-based alloy base and a region repaired by welding, which is formed on the non-repaired region and which is made of a buildup-welded layer, the buildup-welded layer being made of a Ni-based alloy containing, by weight, 15% or less of Co, 18-22% of Cr, 0.8-2.0% of Al, 5.0% or less of Ta, 0.5% or less of Mo, 0.5% or less of Ti, 13-18% of W, 0.05-0.13% of C, 0.06% or less of Zr, 0.015% or less of B, 0.4-1.2% of Mn, and 0.1-0.3% of Si, the balance of the alloy being preferably essentially made of Ni.
A Ni-based alloy member including a non-repaired region made of a Ni-based alloy base and a region repaired by welding, which is formed on the non-repaired region and made of a buildup-welded layer, the buildup-welded layer being made of a Ni-based alloy containing, by weight, 15% or less of Co, 18-22% of Cr, 0.8-2.0% of Al, 5.0% or less of Ta, 0.5% or less of Mo, 0.5% or less of Ti, 13-18% of W, 0.05-0.13% of C, 0.06% or less of Zr, 0.015% or less of B, 0.4-1.2% of Mn, and 0.1-0.3% of Si.
A welding material made of a Ni-based alloy containing, by weight, 15% or less of Co, 18-22% of Cr, 0.8-2.0% of Al, 5.0% or less of Ta, 0.5% or less of Mo, 0.5% or less of Ti, 13-18% of W, 0.05-0.13% of C, 0.06% or less of Zr, 0.02% or less of B, 0.4-1.2% of Mn, and 0.1-0.3% of Si.
A welding material made of a Ni-based alloy containing, by weight, 1-15% of Co, 18-22% of Cr, 0.8-2.0% of Al, 0.5% or less of Ta, 13-18% of W, 0.05-0.13% of C, 0.02% or less of B, 0.4-1.2% of Mn, and 0.1-0.3% of Si.
A welding material made of a Ni-based alloy containing, by weight, 1-15% of Co, 18-22% of Cr, 0.8-2.0% of Al, 2.5-5.0% of Ta, 0.5% or less of Mo, 0.5% or less of Ti, 13-18% of W, 0.05-0.13% of C, 0.06% or less of Zr, 0.015% or less of B, 0.4-1.2% of Mn, and 0.1-0.3% of Si.
Dependencies are inferred from the claim text.