AIBCoCrCNiTaW多元合金微觀結構與高溫性質之研究

Study on the Microstructure and High Temperature Properties of AlBCoCrCNiTaW Multi-element Alloy

莊宇傑(Yu-Chieh Chuang) ； 吳椲葶(Wei-Ting Wu) ； 伏和中(Ho-Chung Fu) ； 蔡孟修(Meng-Hsiu Tsai)

《鑄造工程學刊》 47卷1期 (2021/03) Pp. 29-34

摘要

鈷基和鎳基合金是常用高溫合金，廣泛應用於各種高溫部件，文獻中鮮少會對高溫性質進行深入探討，因此本研究使用真空熔煉鑄造製備兩種以鈷、鎳為基底AlBCoCrCNiTaW多元合金，在800℃進行高溫拉伸試驗以及從常溫到1000℃的高溫硬度試驗檢測合金的高溫性質。實驗結果顯示，兩種合金皆為典型的樹枝狀結構，鈷基的高溫拉伸強度為789 N/mm^2、鎳基為736 N/mm^2，鈷基室溫硬度為445 HV，在1000℃時硬度掉至276 HV，鎳基室溫硬度為474 HV，在1000℃時硬度掉至251 HV。

關鍵字

多元合金 ； 真空熔煉鑄造 ； 微觀結構 ； 高溫性質

並列摘要

Cobalt-based and nickel-based alloys are commonly used high-temperature alloys. They are widely used to manufacture high-temperature components. These alloys are few discussed about high-temperature properties in the literatures. Therefore, this study uses vacuum melting casting to prepare two AlBCoCrCNiTaW multi-element alloys based on cobalt and nickel. High temperature tensile test at 800°C and hardness was tested from normal temperature to 1000°C out to get the high temperature properties of the alloys. Experimental results show that both alloys have typical dendritic structures. The high temperature tensile strength of the cobalt base is 789 N/mm^2, the nickel base is 736 N/mm^2, the room temperature hardness of the cobalt base is 445 HV, and it's hardness drops to 276 HV at 1000°C; the room temperature hardness of the nickel base is 474 HV, and it's hardness drops to 251 HV at 1000°C.

並列關鍵字

Multi-element alloys ； Vacuum melting casting ； Micro structure ； High temperature properties

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