| Transient Liquid-Phase Sintering Characteristic of W-Ni-Fe Alloy via Microwave-Assisted Heating |
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| 作者姓名： | 马运柱 张佳佳 刘文胜 赵亚旭 |
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| 作者单位： | 中南大学 粉末冶金国家重点实验室，湖南 长沙 410083 |
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| 基金项目： | National Natural Science Foundation of China(50774098);Creative Research Group of National Natural Science Foundation of China(50721003) |
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| 摘 要： | 研究了W-Ni-Fe合金在2.45 GHz微波炉中瞬时液相烧结的致密化行为和力学性能。结果表明:微波辅助热场下的93W-Ni-Fe合金显示出优异的力学性能和快速的致密化过程,其压缩试样在1500℃下烧结5 min后,拉伸强度、延伸率、相对密度和硬度(HRC)分别是1200 MPa,16.6%,98.6%和42.0;在微波辅助热场下,试样烧结可以减少80%的烧结时间;微波辅助热场下的瞬时液相烧结有利于减少烧结时间,加快致密化过程,并且有利于钨晶粒的细化,获得组织均匀和综合性能高的W-Ni-Fe合金。
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| 关 键 词： | W-Ni-Fe合金 微波加热 瞬时液相烧结 力学性能 |
| 收稿时间： | 2013/9/20 0:00:00 |
Transient Liquid-Phase Sintering Characteristic of W-Ni-Fe Alloy via Microwave-Assisted Heating |
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| Ma Yunzhu,Zhang Jiaji,Liu Wensheng and Zhao Yaxu.Transient Liquid-Phase Sintering Characteristic of W-Ni-Fe Alloy via Microwave-Assisted Heating[J].Rare Metal Materials and Engineering,2014,43(9):2108-2111. |
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| Authors: | Ma Yunzhu Zhang Jiaji Liu Wensheng and Zhao Yaxu |
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| Affiliation: | State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China |
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| Abstract: | The transient liquid-phase densification behavior and the mechanical performance of W-Ni-Fe alloy were investigated. This results show that the excellent mechanical properties and the quick densification of 93W-Ni-Fe alloy can be obtained via the microwave-assisted sintering approach in a 2.45 GHz microwave furnace. The tensile strength, the elongation, the relative density and the hardness (HRC) of samples are 1200 MPa, 16.6%, 98.6% and 42.0, respectively after the compacts are sintered at 1500 oC for only 5 min. The compacts can be successfully sintered in a microwave furnace with above 80% reduction in the overall processing time. Transient liquid-phase sintering by microwave-assisted heating is beneficial to saving of a lot of sintering time and accelerating of densification process, which results in W grains refinement, homogeneous microstructure and high comprehensive performances of W-Ni-Fe alloy |
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| Keywords: | W-Ni-Fe alloy microwave-assisted heating transient liquid phase sintering mechanical property |
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