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放電等離子燒結(jié)溫度對鎢合金的組織及動(dòng)態(tài)力學(xué)性能的影響
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Effects of Spark Plasma Sintering Temperature on Microstructure and Dynamic Mechanical Properties of 93W-4.9Ni-2.1Fe Alloy
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    以納米93W-4.9Ni-2.1Fe 合金粉末為原料，研究放電等離子燒結(jié)溫度對鎢合金組織和動(dòng)態(tài)力學(xué)性能的影響。結(jié)果表明，采用放電等離子燒結(jié)方法可制備出組織均勻的細(xì)晶鎢合金。當(dāng)燒結(jié)溫度在950~1400 ℃時(shí)，隨著燒結(jié)溫度的增加，鎢顆粒平均尺寸由2 μm增大到10 μm，試樣動(dòng)態(tài)抗壓強(qiáng)度隨之降低；動(dòng)態(tài)壓縮過程中，燒結(jié)溫度在1000~1200 ℃的試樣塑性均較好，而當(dāng)燒結(jié)溫度超過1300 ℃時(shí)，試樣的塑性很低，表現(xiàn)為明顯的脆性狀態(tài)

    Abstract:

    The effects of the spark plasma sintering temperature on microstructure and dynamic mechanical properties of the tungsten heavy alloy with nano-crystalline 93W-4.9Ni-2.1Fe alloy powder as raw material were investigated. Results show that ultra-fine tungsten alloy with uniform microstructure can be prepared by the spark plasma sintering technology. In the sintering temperature range between 950 oC and 1400 oC, the average particle size of the tungsten heavy alloy increases from 2 μm to 10 μm with the sintering temperature elevation while the dynamic compressive strength decreases accordingly. During the process of dynamic compression the plasticity of samples sintered at the temperature between 1000 oC and 1200 oC is good. However, dynamic plasticity of samples sintered at the temperature between 1300 oC and 1400 oC is almost zero, showing typical brittle failure

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王迎春,李樹奎,王富恥,羅鴻志.放電等離子燒結(jié)溫度對鎢合金的組織及動(dòng)態(tài)力學(xué)性能的影響[J].稀有金屬材料與工程,2010,39(10):1807~1810.[Wang Yingchun, Li Shukui, Wang Fuchi, Luo Hongzhi. Effects of Spark Plasma Sintering Temperature on Microstructure and Dynamic Mechanical Properties of 93W-4.9Ni-2.1Fe Alloy[J]. Rare Metal Materials and Engineering,2010,39(10):1807~1810.]
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  • 收稿日期:2009-10-16
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