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鎢含量對鎢合金動態(tài)剪切性能的影響
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TG146.4

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Tungsten Content Effects on Dynamic Shear Properties of Tungsten Heavy Alloys
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    摘要:

    利用帽形試樣在Hopkinson壓桿上測試鎢合金動態(tài)剪切應(yīng)力應(yīng)變關(guān)系,研究了鎢含量在90%～97%（質(zhì)量分數(shù)）范圍內(nèi),應(yīng)變率約為10^5s^-1時,鎢含量對動態(tài)剪切性能的影響.結(jié)果表明,鎢含量增加,動態(tài)剪切強度隨之增加,斷裂應(yīng)變隨之降低.動態(tài)剪切強度與鎢的體積分數(shù)呈線性遞增關(guān)系.斷口分析表明,斷口表現(xiàn)以粘結(jié)相撕裂和鎢顆粒劈裂的混合斷裂,鎢顆粒劈裂比例近似等于鎢顆粒體積分數(shù).

    Abstract:

    Dynamic shear properties of the tungsten heavy alloys containing 90% to 97% W (mass) were investigated using a hat-shaped specimen on the Hopkinson rod of Split Compression at a shear strain rate of 105 s-1. The results show that the dynamic shear strength increased and the shear strain decreased with the tungsten content increasing. The shear strength increased linearly with the increase of volume fraction of tungsten particles in the alloys. The shear fracture surface mainly exhibits tungsten grains split and matrix phase rupture, and the split proportion of tungsten particles equaled approximately to the volume fraction of tungsten particles.

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王迎春 王富恥 李樹奎.鎢含量對鎢合金動態(tài)剪切性能的影響[J].稀有金屬材料與工程,2006,35(7):1132~1134.[Wang Yingchun, Wang Fuchi, Li Shukui. Tungsten Content Effects on Dynamic Shear Properties of Tungsten Heavy Alloys[J]. Rare Metal Materials and Engineering,2006,35(7):1132~1134.]
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  • 收稿日期:2005-04-29
  • 最后修改日期:2005-04-29
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