http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
콘덴서 핀용 알루미늄 클래드의 특성에 미치는 중간열처리의 영향
어광준(K. Euh),김동배(D.B Kim),오영미(Y.M. Oh),백은지(E. Baek),김수현(S.-H. Kim),김형욱(H.-W. Kim) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.10
Aluminum clad sheets are extensively used as brazing materials in the automotive heat exchangers due to their high specific thermal conductivity. In the present study, strip-cast 3000-series aluminum alloys having high strengths are used as core alloys for aluminum clad sheets. The high strength clad sheets are fabricated by the roll bonding process and further cold-rolled down to the thickness of 0.08㎜. An intermediate annealing at the different amount of reductions is conducted during cold rolling in order to obtain the thin aluminum clad sheets with different final reductions. The effect of intermediate annealing on the properties of high strength aluminum clad sheets is elucidated by means of microstructural analysis.
김형욱(H.W.Kim),어광준(K.Euh),김수현(S.H.Kim),김동배(D.B Kim),김원경(W.K. Kim) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.10
Al6022/Al50231 Al6022 clad sheets were fabricated by roll bonding at ambient temperature and the mechanical properties of the annealed sheets were investigated. The bonding strength of the sheets increased with increasing thickness reduction rate of roll bonding. No defects like crack or void are observed at the bonded interface after roll bonding at thickness reduction rate above 50%. After annealing at 480℃ for 1 min., the sheets have a well bonded interface without void and 2<SUP>nd</SUP> phase and the microstructure of the sheets consisted of fully recrystallized grains. Stress-strain curves show same strain hardening characteristics with core Al5023 alloy sheets. Meanwhile the elongation of the sheets was higher than that of commercial Al6022 or Al5023 alloy sheet. Especially, the local elongation of the sheets increased about 5~6% compare to the Al5023 alloy sheet. The sheet showed very low tensile anisotropy due to different deformation characteristics of each layer in clad sheets.