| B和Ce对Co-8.8Al-9.8W-2Ta合金组织和性能的影响 |
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| 引用本文： | 徐仰涛,李淮,马腾飞,吕鑫.B和Ce对Co-8.8Al-9.8W-2Ta合金组织和性能的影响[J].稀有金属材料与工程,2022,51(3):921-926. |
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| 作者姓名： | 徐仰涛 李淮 马腾飞 吕鑫 |
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| 作者单位： | 兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室,兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室,兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室,兰州理工大学 省部共建有色金属先进加工与再利用国家重点实验室 |
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| 基金项目： | 国家自然科学基金资助(项目号51561019) |
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| 摘 要： | 为了改善Co-8.8Al-9.8W-2Ta合金的性能,添加0.4at.%的Ce元素和B元素,研究其对基体合金组织和性能的影响。结果表明：Ce元素和B元素均可以抑制二次相析出,并对二次相有球化作用；0.4Ce合金晶界区域析出Co3W相,Ce元素主要形成化合物Ce2Co17和Al2Ce2Co15,0.4B合金晶界区域析出Co3W和Co7W6相,B元素主要形成CoW2B2；Ce元素和B元素均可以提高合金的显微硬度,0.4Ce合金显微硬度最高。
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| 关 键 词： | Co-Al-W合金 微合金化 微观组织 显微硬度 |
| 收稿时间： | 2021/4/13 0:00:00 |
| 修稿时间： | 2021/5/19 0:00:00 |
Effect of B and Ce on Microstructure and Properties ofCo-8.8Al-9.8W-2Ta Superalloys |
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| Xu Yangtao,Li Huai,Ma Tengfei and Lv Xin.Effect of B and Ce on Microstructure and Properties ofCo-8.8Al-9.8W-2Ta Superalloys[J].Rare Metal Materials and Engineering,2022,51(3):921-926. |
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| Authors: | Xu Yangtao Li Huai Ma Tengfei and Lv Xin |
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| Abstract: | In order to improve the properties of Co-8.8Al-9.8W-2Ta alloy, 0.4at.% Ce and B elements were added to study their effects on the microstructure and properties of the matrix alloy. The results showed that both Ce and B can inhabit the precipitation of the secondary phase, and spheroidize the secondary phase. Co3W phase is precipitated in the grain boundary region of 0.4Ce alloy, Ce mainly formed compounds Ce2Co17 and Al2Ce2Co15. And Co3W and Co7W6 phases are mainly formed in the grain boundary region of 0.4B alloy, and B element mainly formed compound CoW2B2. Both Ce element and B element can improve the microhardness of the alloy, and 0.4Ce alloy owned the highest microhardness. |
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| Keywords: | Co-Al-W alloy Microalloying Microstructure Microhardness |
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