パルスティグ溶接による結晶粒の微細化 : オーステナイトステンレス鋼溶接金属の凝固制御に関する研究(第一報)(平成62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
This study was carried out to achieve the granulation or grain refinement of solidification structure of fully austenitic stainless steel weld metal by pulsed TIG welding. Welding variables examined in this study were the pulse frequency and the ratio of base current time (t_b) to peak current time (t_p) in a rectangular pulsed current wave. The granulation or grain refinement of the solidification structure depended on the pulse frequency with the most effective refinement achieved at a pulse frequency of nearly 2.5 Hz and at t_b/t_p of 9 to 10. The welding conditions in this case were a welding speed of 6 cm/min, average welding current of 50 A, and base current of 10 A. The pulse frequency-dependent granulation or grain refinement could be explained in terms of the difference in the degree of constitutional supercooling.
社団法人溶接学会の論文
1987-02-05