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題 名 | Microstructural Aspects and Mechanical Properties of Alloy 690 Wedments Using I-52 and I-152 Weld Metals=以I-52,I-152為銲材之690合金銲件微觀組織與機械性質之研究 |
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作 者 | 李驊登; 郭聰源; 杜青駿; 葉東昌; 鄭勝隆; | 書刊名 | 中國機械工程學刊 |
卷 期 | 20:3 1999.06[民88.06] |
頁 次 | 頁277-285 |
分類號 | 472.5 |
關鍵詞 | 銲材; 690合金銲件; 機械性質; 微觀組織; I-52; I-152; Alloy 690; GTAW; SMAW; HAZ; |
語 文 | 英文(English) |
中文摘要 | 本研究旨在探討使用I-52與I-152銲材施銲之690合金銲件,對銲道金屬之微 觀組織、銲件之機械性質與腐蝕行為上所造成的影響。試件以GTAW及SMAW銲接法施行三層 多道次銲接。研究結果顯示,銲道次晶結構主要為枝晶組織,且在使用I-152銲材銲接之銲 件的銲道微觀組織上,比I-52具有較細的次晶結構以及較小的枝晶間距。在機械性質上亦 顯示I-152銲件有較高的抗拉強度與硬度。然而,在抗IGC的能力上,刖反較I-52銲件為 差。另外,研究中亦發現,在I-52的銲件中,銲道的硬度與延伸率有隨銲接道次增加而增 加的趨勢。 |
英文摘要 | This study investigates how I-52 and I-152 weld metals influence the microstructure, mechanical properties and corrosion behavior of alloy 690 weldments. Gas tungsten arc welding (GTAW) and shield metal arc welding (SMAW) processes were employed with three-layer multi-pass welding. Experimental results showed the suhgrain structures of the welds are mainly dendritic structures. The I-152 weld had a finer subgrain structure and a smaller dendritic spacing than the I-52. Mechanical test results demonstrated that the I-152 weldment had higher tensile strength and higher hardness. However, the inter-granular cracking (IGC) resistance of the I- 152 weld was worse than that of the I-52. Furthermore, a gradual increase in the hardness and percentage elongation of the I-52 welds was observed with an increase in the number of passes during welding. |
本系統中英文摘要資訊取自各篇刊載內容。