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Effect of microstructural variation on the Cu/CK45 carbon steel friction weld joint

  • W. B. Lee and S. B. Jung EMAIL logo
Published/Copyright: February 3, 2022
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Abstract

The mechanical properties of friction-welded pure Cu/CK45 carbon steel joints have been studied. The joint strength increased with increasing upset pressure till it reached a critical value. However, the joint strength was fixed at a low strength with increasing friction time, compared to that of the Cu base metal. The hardness near the interface at the Cu side was softer than that of the base metal due to the dynamically recrystallized and annealed grain. The width of the softened region became wider with increasing friction time and decreasing upset pressure. But the hardness of the CK45 carbon steel side showed a slightly higher value than that of the base metal. This result was explained by the formation of martensite structure at the CK45 carbon steel side during the welding process.


Prof. Seung Boo Jung Department of Advanced Materials Engineering 300 Cheoncheon-dong, Jangan-gu, Suwon, Gyounggi-do 440-746, Korea Tel.: +82 31 290 7359 Fax: +82 31 290 7371

  1. This work was supported by the Advanced Materials and Process Research Center for IT at Sungkyunkwan University (Grant No. R12-2002-057–03001-0).

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Received: 2002-09-19
Published Online: 2022-02-03

© 2003 Carl Hanser Verlag, München

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