발간논문

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Vol.25, No.9, 613 ~ 623, 1987
Title
A Study on the Bonding Strength of Carbon Steel / Cu Bimetal
이철로Cheul Ro Lee, 류광현Kwang Hyon Ryu, 임승택Seong Tack Lim, 천병선Byong Sun Chun
Abstract
A bimetal was produced by a welding method. Its base metal was carbon steel containing 0.53 wt% C and the weld metal was pure copper containing 1 wt% Sn which was added as a deoxidizer. The yield strength and the ultimate tensile strength of the bimetal bonding were 6.8 ㎏/㎟ and 21.5 ㎏/㎟, respectively. The Charry V-notch impact absorption energy of the bimetal was 41.8 J/㎠ and the fracture was found to take place in copper near the interface indicating relatively high interface strength. The elastic-plastic fracture toughness value under static load, Jic, was 1.1 ㎏/㎜ and the mode of fracture was similar to that in the Charpy impact test, The wear resistance of the base metal was superior to that of SUS 304 stainless steel.
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