肉盛部における水素による剥離性の割れについて(第1報) : 肉盛部における水素濃度分布と割れとの関係(昭和59年度春季全国大会論文発表講演論文)

概要

論文の詳細を見る
Hydrogen-induced disbonding of austenitic stainless steel cladding was investigated. The used test specimen was made from the heavy section 2 1/4Cr-1Mo steel plate weld-clad using type 309 strip with 75 mm width and type 347 strip with 150 mm width. And it was heated at 455℃ in autoclave containing high pressure H_2 for hydrogen charging. The results indidate that (1) the delayed cracking occurs when the specimen is rapidly cooled from hydrogen charging temperature, but it cannot occur above 100℃, (2) this type of cracking takes place in grain boundaries of cladding adjacent to the fusion line, (3) the susceptibility to cracking decreases by application of post-heating or by reducing the rate of cooling after hydrogen charging, (4) numerical analysis applied to hydrogen distribution may explain the behaviour of cracking.
社団法人溶接学会の論文
1984-02-05