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澆鑄過熱度對Inconel 718顯微組織影響之研究 = The Inf...

余俊誼

澆鑄過熱度對Inconel 718顯微組織影響之研究 = The Influence of Superheat Parameters on Microstructure of Inconel 718 in Pouring Process

紀錄類型:	書目-語言資料,印刷品 : 單行本
並列題名:	The Influence of Superheat Parameters on Microstructure of Inconel 718 in Pouring Process
作者:	余俊誼,
其他團體作者:	國立高雄大學
出版地:	[高雄市]
出版者:	撰者;
出版年:	2014[民103]
面頁冊數:	92面圖，表 : 30公分;
標題:	精密鑄造
標題:	Investment casting
電子資源:	http://handle.ncl.edu.tw/11296/ndltd/41503071086264857089
附註:	參考書目：面77-81
附註:	103年12月16日公開
摘要註:	本研究內容係以Inconel 718為實驗材料，改變澆鑄參數，利用脫腊精密鑄造法在真空熔煉爐中澆鑄試塊及鑄件，藉由澆鑄結果來比較其微觀組織的變化及微觀成份偏析的影響。實驗結果顯示，在微觀組織變化的部份，縮孔數隨著澆鑄溫度增加呈現正比增加的現象，並於澆鑄溫度1490℃開始，縮孔面積百分比明顯由1450℃的0.32％大幅提升至2.58％，已超過業界所要求的縮孔面積百分比1％，而澆鑄溫度愈高，其枝晶間距亦愈大，在單一溫度的試塊中，越接近水口處，樹枝狀晶間距越大。在微觀成份偏析的部份，經過各元素的偏析分析結果，於枝臂上偏析的元素有鋁、鉻、硫、鐵，於枝臂間偏析的元素有鈦、鈮、鉬、碳、磷，代表著鋁、鉻、硫、鐵等元素在凝固過程中屬於較快凝固的元素，而鈦、鈮、鉬、碳、磷，則是較慢凝固的元素，會被排往排往樹枝狀臂間凝固。 This research used Inconel 718 as experimental material, which focused on the effect of casting parameters on the pouring and casting processes. The change between the microstructures of shrinkage cavities and the dendrite spacing will be discussed. After analyzing shrinkage cavity areas at different pouring temperature, the results show that the number of the shrinkage cavities has proportion to the pouring temperature. Particularly, the area percentage of shrinkage cavities is increased from 0.32% at 1450℃ to 2.58% at 1490℃ which is far more than 1% of industrial demand. In measurements of dendrites spacing, it indicates that the higher pouring temperature causes the dendrites spacing increased. In addition, the dendrites spacing of specimen also increased in certain temperature. The elements including Al, Cr, S, and Fe segregate on the dendrite arms while the elements including Ti, Nb, Mo, C, and P segregate between the dendrite arms by the segregation analytic result of each elements. The fact indicates that Al, Cr, S, and Fe are the elements that solidified faster; on the contrary, Ti, Nb, Mo, C, and P belong to the elements solidified slowly and solidified between the dendrite arms.

澆鑄過熱度對Inconel 718顯微組織影響之研究 = The Influence of Superheat Parameters on Microstructure of Inconel 718 in Pouring Process
余, 俊誼

澆鑄過熱度對Inconel 718顯微組織影響之研究 = The Influence of Superheat Parameters on Microstructure of Inconel 718 in Pouring Process / 余俊誼撰 - [高雄市] : 撰者, 2014[民103]. - 92面 ; 圖，表 ; 30公分.
參考書目：面77-81103年12月16日公開.
精密鑄造Investment casting

澆鑄過熱度對Inconel 718顯微組織影響之研究 = The Influence of Superheat Parameters on Microstructure of Inconel 718 in Pouring Process
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