フェライト-オーステナイト系二相ステンレス鋼溶接部の時効特性

概要

論文の詳細を見る
The effect of aging treatment at 350∿850℃ on impact properties and microstructures of two-phase stainless steel and its heat affected zone have been investigated. The relation between impact properties and microstructural changes have been clarified. Results obtained are summarized as follows; 1) Impact properties of aged two-phase stainless steel are strongly concerned with 475℃ embrittlement and σ phase embrittlement. For each embrittlement impact properties are clearly related to hardness changes. 2) For σ phase embrittlement a toughness dip of base metal is equal to that of its heat affected zone. The main reason is that σ phase precipitates with γ phase. 3) For 475℃ embrittlement, impact properties of base metal are different from that of its heat affected zone, because of the difference of α-grain size.
社団法人溶接学会の論文
1980-03-05