爆着Ti/SUS430ステンレスクラッド鋼板の接合特性と界面構造に及ぼす熱処理の影響

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書誌事項

タイトル別名
  • Effect of Heat Treatment on Bonding Characteristics and Interfacial Microstructures in Explosively Welded Ti/SUS430 Stainless Steel Clad
  • バクチャク Ti SUS430 ステンレスクラッド コウハン ノ セツゴウ トクセイ ト カイメン コウゾウ ニ オヨボス ネツ ショリ ノ エイキョウ

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説明

Effect of heat treatment on bonding characteristics and interfacial microstructures in explosively welded titanium/SUS430 ferritic stainless steel clad was investigated. The average shear strength of the clad annealed at 1073K for 3.6ks was 338 MPa and was equivalent to about 60% of that of an as-welded clad. The strength of the clad annealed at 1073K gradually decreased to 242 MPa with increasing holding time up to 360 ks. The same tendency was obtained from the clad annealed at 1173K. On the other hand, the strength of the clad annealed at 1273K drastically decreased to 107 MPa with increasing holding time up to 360 ks. The clad annealed at 1073 and 1173K yielded TiC layer at the bonding interface, while the reaction layer in the clad annealed 1273K consisted of TiC, FeTi, Fe2Ti and χ (Fe29Cr13Ti8) from titanium side. It was noted that chromium existed in the Fe2Ti, which has wide solubility limit for chromium, and χ compounds formed at the SUS430 side. The TiC layer in the former clads acts as a barrier for diffusion of titanium, iron and chromium across the bonding interface and prevents the growth of intermetallic compounds. The clad formed TiC layer at the bonding interface preserved high bonding strength even after prolonged annealing.

収録刊行物

  • 鉄と鋼

    鉄と鋼 85 (4), 340-345, 1999

    一般社団法人 日本鉄鋼協会

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