2413 高クロム鋼溶接継手の長時間高温強度に関する研究 : その2:熱時効に伴う溶接部の組織変化の検討(S13-1 高温材料・構造の強度と破壊(1),S13 高温材料・構造の強度と破壊)

概要

論文の詳細を見る
This paper describes metallurgical observation and analysis results for the aged welds made of Gr.91 and Gr.122 steels. Much more coarse carbides were observed by SEM in the fine grain heat affected zone of the welds than in the base metal and coarse carbides increased with aging. However, extracted residue analyses showed that the total amount of precipitations did not depend on regions and did not increase with aging. Therefore, the carbides which had precipitated in the early stage of aging cohered and grew mainly on the prior austenite grain boundaries, as far as the welds were subjected to stress free isothermal aging for 6,000 hours.
一般社団法人日本機械学会の論文
2007-09-07