Fabrication of Mo-Cu alloys by resistance sintering under ultra-high pressure
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摘要: 采用超高壓力下通電燒結技術制備了銅體積分數25%~75%的鉬銅合金材料.燒結壓力2~10GPa,通電功率15kW,通電時間65s.分析了不同成分和制備工藝參數的鉬銅合金顯微形貌及力學性能.結果表明,所制備的鉬銅合金材料結構致密,力學性能優越,而且超高壓力下通電燒結技術能有效地避免晶粒長大和組織偏析.Abstract: Resistance sintering under ultra-high pressure was developed to fabricate Mo-Cu alloys containing copper of 25%-75% in volume fraction. Consolidation was carried out under pressures of 2-10 GPa and an input power of 15 kW for 65 s. The densification effect and mechanical properties of these Mo-Cu alloys were investigated. The results show that these composites have high density and their mechanical properties are well. It is concluded that resistance sintering under ultra-high pressure is one of the fabrication methods which can avoid inhomogeneous structure and abnormal grain growth.
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Key words:
- Mo-Cu alloys /
- ultra-high pressure /
- resistance sintering /
- microstructure /
- mechanical properties
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