| Effecxt of Cu Addition on W—Ni—Fe Alloys Sintered at a Low Temperature |
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| 引用本文： | ChuanbinWANG QiangSHEN 等. Effecxt of Cu Addition on W—Ni—Fe Alloys Sintered at a Low Temperature[J]. 材料科学技术学报, 2002, 18(3): 234-236 |
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| 作者姓名： | ChuanbinWANG QiangSHEN 等 |
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| 作者单位： | [1]StateKeyLaboratoryofAdvancedTechnologyforMaterialsSynthesisandProcessing,WuhanUniversityofTechnology,Wuhan430070,China [2]StateKeyLaboratoryofAdvancedTechnologyforMaterialsSynthesisandProcessing,WuhanUni |
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| 摘 要： | In this study,Cu was added as the third additive to lower the sintering temperature of W-Ni-Fe alloy .By adding 2wt pct Cu, 2 dense 93W-3.5Ni-1.5Fe-2.0Cu tungsten alloy was obtained by hot-pressing at a low temperature of 1573K which is a process of liquid-phase sintering.As a result,the morphology of W-Ni-Fe alloy changed obviously after the addition of Cu and the alloy had higher relative density and rupture strength.The mechanism of the densification of W-Ni-Fe-Cu alloy at the low temperature was then mainly investigated.It was found that ,part sintering activators Ni and Fe could exist in liquid form at 1573 K due to the addition of Cu, which made it easy for Ni and Fe to dissolve W and thus the full densification of W-Ni-Fe-Cu alloy at the low temperature was realized.
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| 关 键 词： | 钨镍铁合金 铜掺杂 低温条件 热压烧结 粉末冶金 |
Effect of Cu Addition on W-Ni-Fe Alloys Sintered at a Low Temperature |
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| Chuanbin WANG,Qiang SHEN,Lianmeng ZHANG. Effect of Cu Addition on W-Ni-Fe Alloys Sintered at a Low Temperature[J]. Journal of Materials Science & Technology, 2002, 18(3): 234-236 |
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| Authors: | Chuanbin WANG Qiang SHEN Lianmeng ZHANG |
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| Affiliation: | State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China |
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| Abstract: | In this study, Cu was added as the third additive to lower the sintering temperature of W-Ni-Fe alloy. By adding 2 wt pct Cu, a dense 93W-3.5Ni-1.5Fe-2.0Cu tungsten alloy was obtained by hot-pressing at a low temperature of 1573 K which is a process of liquid-phase sintering. As a result, the morphology of W-Ni-Fe alloy changed obviously after the addition of Cu and the alloy had higher relative density and rupture strength. The mechanism of the densification of W-Ni-Fe-Cu alloy at the low temperature was then mainly investigated. It was found that, part sintering activators Ni and Fe could exist in liquid form at 1573 K due to the addition of Cu, which made it easy for Ni and Fe to dissolve W and thus the full densification of W-Ni-Fe-Cu alloy at the low temperature was realized. |
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| Keywords: | W-Ni-Fe alloy Sintering Mechanical properties |
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