鋳造２相ステンレス鋼の溶接熱影響部の熱時効脆化　　第１報　溶接熱影響部の熱時効脆化挙動

概要

論文の詳細を見る
Effects of aging on toughness were studied in the simulated heat-affected zone (HAZ) as well as the HAZ of weld joint in duplex stainless steels. The results are summarized as follows. (1) Such welding thermal cycle conditions as rapid cooling rate, high heating temperature, long heating time, annealing following thermal cycle, and restraint of thermal strain raise susceptibility to the age-embrittlement in the simulated HAZ. (2) In contrast to the high susceptibility to the age embrittlement in the simulated HAZ specimen of a rapid cooling rate such as 150°C/s, TIG weld joint suffers age embrittlement by a far smaller amount. (3) Annealing after the age-embrittlement diminishes hardness and deterioration of toughness in aged specimens.
一般社団法人日本高圧力技術協会の論文