강의 마찰용접에 미치는 탄소함량의 영향: 동종강에 대하여Influence of carbon equivalents on steel friction welds : similar steels

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In this study, the influence of carbon equivalents on friction welds of similar steels was investigated. Four types of steels with 15mm diameter tested in the wide range of carbon equivalents from 0.3 to 1.1 Main experimental results are summarized as follows : (1) Under the constant burn-off length, the friction time becomes longer with the increasing carbon equivalent, but the upset length shows no consistent tendencies. (2) Due to the recrystallization in the contact area, the maximum hardness occurs some away from the contact surface. And it increases almost linearly with the increasing carbon equivalent. (3) Even a steel with 1.1 C.E. can be friction welded to make defect-free welds. (4) With the increasing carbon equivalent, the bend angle and charpy impact value decrease very rapidly in the range from 0.3 C. E., but remain nearly unchanged for C. E. higher than 0.6. (5) Heat treatment of the base metals before welding has very little influence on the mechanical properties of welds. On the other hand, normalizing of the welds improves the bend angle and charpy impact value, but its effect becomes almost negligible, when the carbon equivalents are higher than 0.6.
Publisher
대한용접·접합학회
Issue Date
1985-11
Language
Korean
Citation

대한용접·접합학회지, v.3, no.2, pp.1 - 9

ISSN
1225-6153
URI
http://hdl.handle.net/10203/66803
Appears in Collection
ME-Journal Papers(저널논문)
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