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題 名 | 氮含量對沃斯田鐵型不鏽鋼銲接角變形之影響=Effect of Nitrogen Content on the Angular Distortion in Austenitic Stainless Steel Weldment |
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作 者 | 陳炳宜; 莊瑛任; 林義成; | 書刊名 | 材料科學與工程 |
卷 期 | 32:1 2000.03[民89.03] |
頁 次 | 頁41-46 |
分類號 | 472.14 |
關鍵詞 | 銲接; 肥粒相; 角變形; 沃斯田鐵型不鏽鋼; Welding; Ferrite; Angular distortion; Austenitic stainless steel; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究的目的是希望能藉由實驗的方式,即在保護氣體中添加氮氣來改變沃斯田鐵型不鏽鋼銲道肥粒相之殘留量,以研究其對角變形的影響。實驗中所採用的銲接方法為氮-氬混合鎢電極電弧銲接,並選用AISI316L不鏽鋼與AIST310不鏽鋼,肥粒相含量以電子探針微分析儀來量測;熱循環量測採用動態溫度量測系統;角變形值採用平均垂直位移量。實驗結果對沃斯田鐵型不鏽鋼角變形之影響,在低熱輸入量組中角變形隨氮含量增加而增加,而高熱輸入量組中,310不鏽鋼角變形隨氮含量增加而減少,316L不銹鋼角變形則隨氮含量增加而微幅增加。其中310與316L之間差異,主要是316L不鏽鋼因氮含量4%以下有殘留肥粒相,導致角變形減少,結果造成整個角變形呈增日趨勢。而310全沃斯田鐵不鏽鋼,則無δ肥粒相殘留現象,故316L不鏽鋼試片在有殘留δ肥粒相時,其角變形會降低,其原因可能為殘留δ肥粒相會使銲道局部體積收縮現象減緩所致。 |
英文摘要 | This study aimed at the investigation of the effect of the nitrogen added in shielding gas on the angular distortion in the austenitic stainless steel weldment. In this study, the Gas Tungsten are welding was used, and the experimental parameters include: 0, 1, 2, 4, 6, and 8% nitrogen added. The materials of types 316L and 310 stainless steel were used. The content of retained ferrite was determined by using the electron probe X-ray microanalyzer. During welding, the thermal cycle of different locations in weldment were recorded. The experimental results showed that the content of retained ferrite can be increased because of the increase of the heat input whose increase is due to the reason that the nitrogen is added in shielding gas. In the lower heat input condition, the angular distortion is increased with the increase of nitrogen added. In the higher heat input condition, the angular distortion is decreased with the increase of nitrogen added in type 310 stainless steel; the angular distortion is increased with the increase of nitrogen added in type 316L stainless steel. The reason for the difference obtained between type 310 and 316L stainless steels in that type 316L, stainless steel has much ferrite is retained, and the retained ferrite can moderate the distortion due to the action of thermal contraction during welding process. |
本系統中英文摘要資訊取自各篇刊載內容。