溶接応力の研究(第1報) : 溶接歪に関する基礎的研究

概要

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Although stresses exist in welded specimen both during and after welding, only those remaining after specimen has conpletely cooled have much discussed. As a preliminary experiment for investigation on the generation mechanism of residual stress by welding, Authors inquired into process of arise of welding strain in this experiment, and have taken the following results. Transverse strain indicates expansion in high temperature above starting temperature of Ar' transformation, but it changes to contraction when temperature of deposited metal falls below Ar' point. As a whole, remarkable amount of contraction is produced by the time deposited metal cools to room temperature. The state of these contraction agreed to result analysed by heat conduction theory (see Fig. 8) Angular distortion is mostly produced in high temperature range above Ar' transformation.
社団法人溶接学会の論文
1961-02-25