溶接学会論文集
Print ISSN : 0288-4771
低変態温度材料と残留応力の生成についての考察
-レーザースペックルによるひずみ測定法の溶接への適用(第7報)-
村松 由樹黒田 聖治山本 純司金 裕哲
著者情報
ジャーナル フリー

2004 年 22 巻 1 号 p. 107-116

詳細
抄録

Recently, materials with low transformation temperature have been investigated for improvement of reliability in welded joint. Due to the introduction of compressive residual stress by using the material, fatigue strength or resistance to cold cracking are improved. In this report the authors examined the effects of phase-transformational behavior on residual stress and their distribution using some basic models and some types of the behavior. Expansions and temperature range of phase-transformation detected in the previous report using the laser speckle strain measurement are also used in this report. Results show that reduction of residual stress from tensile to compressive occurs only with severe restraint condition and low transformation temperature, especially low Mf temperature. In the previous report, the authors suggested the possibility of superplasticity during phase-transformation. Experimental results of residual stress distribution indicated the necessity of consideration for superplasticity by using the low transformation temperature materials.

著者関連情報
© 2004 社団法人 溶接学会
前の記事 次の記事
feedback
Top