アルミニウムクラッド鋼の接合界面特性に及ぼす加熱処理の影響 : 真空圧延接合法によるクラッド材の製造とその特性(第2報)

概要

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An aluminum clad steel was produced using the vacuum roll bonding.The clad steel was heated at 560 to 650℃ for 0 to 20 s to study formation of intermetallic phases and bond shear strength in the bond interface between the aluminum and the steel of the aluminum clad steel given weld thermal cycles. Main results obtained are as follows : (1) Although the clad steel was heated at 650℃ without holding, an intermetallic phase was not formed in the bond interface.(2)However, when the clad steel was heated for a certain time, intermetallic phases of FeAl_3 and Fe_2Al_5 were formed in the bond interface and the activation energy for formation of the phases was 41 kcal/mol.(3)When the thickness of the phases was more than around 1.5 μm, the bond shear strength of the clad metal was abruptly decreased in comparison with that of the clad steel in as-produced condition.
社団法人溶接学会の論文
1994-11-05