球状黒鉛鋳鉄固相接合材の衝撃特性 : 球状黒鉛鋳鉄の固相接合(第4報)

概要

論文の詳細を見る
Impact characteristics of diffusion bonded joints of ferritic shperoidal graphite cast iron and the cast iron to mild steel have been investigated using an instrumented Charpy impact test machine. The tests were performed at 0℃ after ferritizing the joints. Main results obtained are as follows ;(1) Absorbed energy of the cast iron joints bonded without an insert metal had about 5 J, which was much lower than that of the base metal.(2) Absorbed energy of the cast iron joints bonded with Ni foil as an insert metal became higher than that of the joint without Ni foil. The absorbed energy increased with the increas of the thickness of Ni feil and the absorbed energy was reached the base metal level when 50-μm thick Ni foil was used an insert metal.(3) Bond toughness of the cast iron to the mild steel joint bonded without the insert metal increased with the increase of the bonding temperature. When the bonding temperature was upper than 900℃, the absorbed energy was higher than that specified by Japanese Industrial Standard, which is 12.7 J.(4) Bond toughness of the cast iron to the mild steel joints bonded with Ni foil of 10 or 20μm in thickness at 820℃ was almost the same as that of the cast iron base metal.
社団法人溶接学会の論文
1990-02-05