Brazing Inconel 625 Using the Copper Foil

Brazing Inconel 625 (IN-625) using the copper foil has been investigated in this research. The brazed joint is composed of nanosized CrNi 3 precipitates and Cr/Mo/Nb/Ni quaternary compound in the Cu/Ni-rich matrix. The copper filler 50 μ m in thickness is enough for the joint filling. However, the a...

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Veröffentlicht in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2013-12, Vol.44 (13), p.5724-5731
Hauptverfasser: Chen, Wen-Shiang, Wang, Cheng-Yen, Shiue, Ren-Kae
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container_title Metallurgical and materials transactions. A, Physical metallurgy and materials science
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creator Chen, Wen-Shiang
Wang, Cheng-Yen
Shiue, Ren-Kae
description Brazing Inconel 625 (IN-625) using the copper foil has been investigated in this research. The brazed joint is composed of nanosized CrNi 3 precipitates and Cr/Mo/Nb/Ni quaternary compound in the Cu/Ni-rich matrix. The copper filler 50 μ m in thickness is enough for the joint filling. However, the application of Cu foil 100 μ m in thickness has little effect on the shear strength of the brazed joint. The specimen brazed at 1433 K (1160 °C) for 1800 seconds demonstrates the best shear strength of 470 MPa, and its fractograph is dominated by ductile dimple fracture with sliding marks. Decreasing the brazing temperature slightly decreases the shear strength of the brazed joint due to the presence of a few isolated solidification shrinkage voids smaller than 15 μ m. Increasing the brazing temperature, especially for the specimen brazed at 1473 K (1200 °C), significantly deteriorates the shear strength of the joint below 260 MPa because of coalescence of isothermal solidification shrinkage voids in the joint. The Cu foil demonstrates potential in brazing IN-625 for industrial application.
doi_str_mv 10.1007/s11661-013-1954-x
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The brazed joint is composed of nanosized CrNi 3 precipitates and Cr/Mo/Nb/Ni quaternary compound in the Cu/Ni-rich matrix. The copper filler 50 μ m in thickness is enough for the joint filling. However, the application of Cu foil 100 μ m in thickness has little effect on the shear strength of the brazed joint. The specimen brazed at 1433 K (1160 °C) for 1800 seconds demonstrates the best shear strength of 470 MPa, and its fractograph is dominated by ductile dimple fracture with sliding marks. Decreasing the brazing temperature slightly decreases the shear strength of the brazed joint due to the presence of a few isolated solidification shrinkage voids smaller than 15 μ m. Increasing the brazing temperature, especially for the specimen brazed at 1473 K (1200 °C), significantly deteriorates the shear strength of the joint below 260 MPa because of coalescence of isothermal solidification shrinkage voids in the joint. 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Soldering</topic><topic>Characterization and Evaluation of Materials</topic><topic>Chemistry and Materials Science</topic><topic>Copper</topic><topic>Exact sciences and technology</topic><topic>Foil bearings</topic><topic>Joining, thermal cutting: metallurgical aspects</topic><topic>Materials Science</topic><topic>Metallic Materials</topic><topic>Metals. 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A, Physical metallurgy and materials science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, Wen-Shiang</au><au>Wang, Cheng-Yen</au><au>Shiue, Ren-Kae</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Brazing Inconel 625 Using the Copper Foil</atitle><jtitle>Metallurgical and materials transactions. A, Physical metallurgy and materials science</jtitle><stitle>Metall Mater Trans A</stitle><date>2013-12-01</date><risdate>2013</risdate><volume>44</volume><issue>13</issue><spage>5724</spage><epage>5731</epage><pages>5724-5731</pages><issn>1073-5623</issn><eissn>1543-1940</eissn><coden>MMTAEB</coden><abstract>Brazing Inconel 625 (IN-625) using the copper foil has been investigated in this research. The brazed joint is composed of nanosized CrNi 3 precipitates and Cr/Mo/Nb/Ni quaternary compound in the Cu/Ni-rich matrix. The copper filler 50 μ m in thickness is enough for the joint filling. However, the application of Cu foil 100 μ m in thickness has little effect on the shear strength of the brazed joint. The specimen brazed at 1433 K (1160 °C) for 1800 seconds demonstrates the best shear strength of 470 MPa, and its fractograph is dominated by ductile dimple fracture with sliding marks. Decreasing the brazing temperature slightly decreases the shear strength of the brazed joint due to the presence of a few isolated solidification shrinkage voids smaller than 15 μ m. Increasing the brazing temperature, especially for the specimen brazed at 1473 K (1200 °C), significantly deteriorates the shear strength of the joint below 260 MPa because of coalescence of isothermal solidification shrinkage voids in the joint. The Cu foil demonstrates potential in brazing IN-625 for industrial application.</abstract><cop>Boston</cop><pub>Springer US</pub><doi>10.1007/s11661-013-1954-x</doi><tpages>8</tpages></addata></record>
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source SpringerNature Journals
subjects Applied sciences
Brazing
Brazing. Soldering
Characterization and Evaluation of Materials
Chemistry and Materials Science
Copper
Exact sciences and technology
Foil bearings
Joining, thermal cutting: metallurgical aspects
Materials Science
Metallic Materials
Metals. Metallurgy
Nanotechnology
Structural Materials
Surfaces and Interfaces
Thin Films
title Brazing Inconel 625 Using the Copper Foil
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