JP5270043B2 - Ni基高Cr合金溶接ワイヤ、被覆アーク溶接棒及び被覆アーク溶着金属 - Google Patents
Ni基高Cr合金溶接ワイヤ、被覆アーク溶接棒及び被覆アーク溶着金属 Download PDFInfo
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- 238000003466 welding Methods 0.000 title claims abstract description 224
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 83
- 239000002184 metal Substances 0.000 title claims abstract description 83
- 229910000599 Cr alloy Inorganic materials 0.000 title claims description 51
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 41
- 239000000956 alloy Substances 0.000 claims abstract description 41
- 239000000203 mixture Substances 0.000 claims abstract description 39
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 37
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 35
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 34
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 30
- 239000012535 impurity Substances 0.000 claims abstract description 28
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 25
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 24
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 17
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 15
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 14
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 229910052758 niobium Inorganic materials 0.000 claims description 25
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 15
- 230000014509 gene expression Effects 0.000 claims description 12
- 229910052796 boron Inorganic materials 0.000 claims description 11
- 229910052791 calcium Inorganic materials 0.000 claims description 10
- 229910052749 magnesium Inorganic materials 0.000 claims description 10
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- 229910052785 arsenic Inorganic materials 0.000 claims description 6
- 238000005336 cracking Methods 0.000 abstract description 53
- 230000005764 inhibitory process Effects 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 65
- 239000010955 niobium Substances 0.000 description 63
- 230000000052 comparative effect Effects 0.000 description 48
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 239000000470 constituent Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- 230000035882 stress Effects 0.000 description 13
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- 239000011651 chromium Substances 0.000 description 11
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- 229910004261 CaF 2 Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
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- 150000001247 metal acetylides Chemical class 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
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- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910003298 Ni-Ni Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- -1 Ti and N Chemical class 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
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- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
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- 239000011148 porous material Substances 0.000 description 1
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- 230000005855 radiation Effects 0.000 description 1
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- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000000550 scanning electron microscopy energy dispersive X-ray spectroscopy Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni as the principal constituent
- B23K35/304—Ni as the principal constituent with Cr as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3033—Ni as the principal constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Arc Welding In General (AREA)
- Nonmetallic Welding Materials (AREA)
Description
Ta+1.6Mo+187N≧5.7…(2)
本発明者らは、溶接部の引張強度、耐溶接割れ性、溶接金属のミクロ組織の健全性、及び溶接作業性を向上させるNi基高Cr合金溶接ワイヤの条件について検討した。なお溶接金属とは、溶接ワイヤと母材とが溶融した溶接部分の金属である。その結果、上記Ta等の化学組成を備えた上で、耐溶接割れ性の向上とS、Ta、Al、Tiの含有量との関係が上記(1)式で特定され、かつ、溶接部の引張強度の向上とTa、Mo、Nの含有量との関係が上記(2)式で特定されることを見出した。このように上記化学組成を備え、かつ上記(1)及び(2)の関係式を満足することにより、溶接部の引張強度及び耐溶接割れ性に優れ、溶接金属のミクロ組織の健全性、溶接作業性が向上したNi基高Cr合金溶接ワイヤを提供することができる。なお、上記(1)式の計算値は19.3以下に定められているが、上記(1)式の計算値が小さいほど、耐溶接割れ性がさらに向上する傾向がある。そのため、顕著な耐溶接割れ性を得るためには、上記(1)式の計算値を13以下としてもよい。
Ta+3.8Nb+1.6Mo+187N≧5.7…(4)
なお、発明者は、Nbを添加する場合も、溶接部の引張強度、耐溶接割れ性、溶接金属のミクロ組織の健全性及びスケール抑制効果を向上させるNi基高Cr合金溶接ワイヤの条件について検討した。その結果、上記のNb等の化学組成を備えた上で、耐溶接割れ性の向上とS、Ta、Nb、Al、Tiの含有量との関係が上記(3)式で特定され、かつ、溶接部の引張強度の向上とTa、Nb、Mo、Nの含有量との関係が上記(4)式で特定されることを見出した。このように上記Ta、Nb等の化学組成を備え、かつ上記(3)及び(4)の関係式を満足することにより、耐溶接割れ性を低下させることなく、溶接部の引張強度、耐溶接割れ性、溶接金属のミクロ組織の健全性、及び溶接作業性に優れたNi基高Cr合金溶接ワイヤを提供することができる。その上、溶接ワイヤの製造コストを低減することができる。なお、上記(1)式と同様に、上記(3)式の計算値も19.3以下に定められているが、上記(3)式の計算値が小さいほど、耐溶接割れ性がさらに向上する傾向があるため、上記(3)式の計算値も13以下に定めても良い。
Ta+1.6Mo+187N≧5.7…(2)
また、実施例1〜16のうち実施例2、3、4、10、11、13、及び14は、さらに、Nbの含有量が0.5質量%以下の条件を満たし、かつ、S、Ta、Nb、Al、Ti、Ta、Mo及びNの含有量が、下記(3)及び(4)の関係式を満たしている。
Ta+3.8Nb+1.6Mo+187N≧5.7…(4)
さらに、実施例3、4、6、8、10、11、13、14、及び15は、Alの含有量が0.26〜0.7質量%の条件を満たしており、実施例3、4、6、9、10、11、13、14、及び15は、Tiの含有量が0.36〜0.7質量%の条件を満たしている。
Ta+1.6Mo+187N≧5.7…(2)
Claims (10)
- C:0.006〜0.04質量%以下、Mn:0.05〜7質量%以下、Fe:1〜12質量%、Si:0.05〜0.75質量%以下、Al:0.01〜0.7質量%、Ti:0.01〜0.7質量%、Cr:25.0〜31.5質量%、Ta:1〜10質量%、Mo:1〜6質量%を含有し、不可避不純物として、Ca+Mg:0.002質量%未満、N:0.1質量%以下、P:0.02質量%以下、O:0.01質量%以下、S:0.0015質量%以下、H:0.0015質量%以下、Cu:0.08質量%以下、Co:0.05質量%以下を含有し、残部がNiからなる組成であり、S、Ta、Al及びTiの含有量が下記(1)の関係式を満たし、かつTa、Mo及びNの含有量が下記(2)の関係式を満たすNi基高Cr合金溶接ワイヤ。
12000S+0.58Ta−2.6Al−2Ti≦13…(1)
Ta+1.6Mo+187N≧5.7…(2) - C:0.006〜0.04質量%以下、Mn:0.05〜7質量%以下、Fe:1〜12質量%、Si:0.05〜0.75質量%以下、Al:0.01〜0.7質量%、Ti:0.01〜0.7質量%、Cr:25.0〜31.5質量%、Ta:1〜10質量%、Mo:1〜6質量%を含有し、不可避不純物として、N:0.1質量%以下、P:0.02質量%以下、O:0.01質量%以下、S:0.0015質量%以下、H:0.0015質量%以下、Cu:0.08質量%以下、Co:0.05質量%以下を含有し、残部がNiからなる組成であり、S、Ta、Al、Ti、Mo及びNの含有量が下記(1)及び(2)の関係式を満たすNi基高Cr合金溶接ワイヤ。
12000S+0.58Ta−2.6Al−2Ti≦13…(1)
Ta+1.6Mo+187N≧5.7…(2) - Alの含有量が0.26〜0.7質量%である請求項1又は2に記載のNi基高Cr合金溶接ワイヤ。
- Tiの含有量が0.36〜0.7質量%である請求項1乃至3のいずれか1項に記載のNi基高Cr合金溶接ワイヤ。
- 不可避不純物としてさらにCa及びMgを含有し、
Ca及びMgの含有量の合計が0.002質量%未満である請求項2乃至4のいずれか1項に記載のNi基高Cr合金溶接ワイヤ。 - さらにNb:0.5質量%以下を含有し、
S、Ta、Nb、Al、Ti、Mo及びNの含有量が、下記(3)及び(4)の関係式を満たす、請求項1乃至5のいずれか1項に記載のNi基高Cr合金溶接ワイヤ。
12000S+0.58Ta+2.1Nb−2.6Al−2Ti≦13…(3)
Ta+3.8Nb+1.6Mo+187N≧5.7…(4) - B、Zr、希土類元素から選択した一種以上の成分:0.02質量%以下を更に含有する請求項1乃至6のいずれか1項に記載のNi基高Cr合金溶接ワイヤ。
- C:0.006〜0.04質量%以下、Mn:0.05〜7質量%以下、Fe:1〜12質量%、Si:0.05〜0.75質量%以下、Al:0.26〜1.0質量%、Ti:0.36〜1.0質量%、Cr:25.0〜31.5質量%、Nb:3.0質量%以下、Ta:3.0質量%以下、Nb+Ta:1.24〜4.64質量%、Mo:1〜6質量%を含有し、不可避不純物として、Ca+Mg:0.002質量%未満、N:0.1質量%以下、P:0.02質量%以下、S:0.0015質量%以下、O:0.01質量%以下、H:0.0015質量%以下、Cu:0.08質量%以下、Co:0.05質量%以下を含有し、残部がNiからなる組成であり、
S、Ta、Nb、Al、Ti、Mo及びNの含有量が、下記(3)及び(4)の関係式を満たす被覆アーク溶接棒用心線。
12000S+0.58Ta+2.1Nb−2.6Al−2Ti≦13…(3)
Ta+3.8Nb+1.6Mo+187N≧5.7…(4) - 請求項6に記載の溶接ワイヤを心線として用いて製造した被覆アーク溶接棒を用いて形成した被覆アーク溶着金属であって、
C:0.006〜0.04質量%以下、Mn:0.05〜7質量%以下、Fe:1〜12質量%、Si:0.05〜0.75質量%以下、Al:0.01〜0.7質量%、Ti:0.01〜0.7質量%、Cr:25.0〜31.5質量%、Nb+Ta:1.8〜4.5質量%、Mo:1〜6質量%を含有し、不可避不純物として、Ca+Mg:0.002質量%未満、N:0.1質量%以下、P:0.02質量%以下、S:0.005質量%以下、O:0.1質量%以下、H:0.002質量%以下、Cu:0.08質量%以下、Co:0.05質量%以下を含有し、残部がNiからなる組成の被覆アーク溶着金属。 - 請求項7に記載の溶接ワイヤを心線として用いて製造した被覆アーク溶接棒を用いて形成した被覆アーク溶着金属であって、
C:0.006〜0.04質量%以下、Mn:0.05〜7質量%以下、Fe:1〜12質量%、Si:0.05〜0.75質量%以下、Al:0.01〜0.7質量%、Ti:0.01〜0.7質量%、Cr:25.0〜31.5質量%、Nb+Ta:1.8〜4.5質量%、Mo:1〜6質量%を含有し、不可避不純物として、Ca+Mg:0.002質量%未満、N:0.1質量%以下、P:0.02質量%以下、S:0.005質量%以下、O:0.1質量%以下、H:0.002質量%以下、Cu:0.08質量%以下、Co:0.05質量%以下を含有し、残部がNiからなる組成であり、
B、Zr、希土類元素から選択した一種以上の成分:0.02質量%以下を更に含有する被覆アーク溶着金属。
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