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zr
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    Influence of Shock strengths on Transition Pressure in Zr
    加载强度对金属相变压力的影响
  
    Influence of Shock strengths on Transition Pressure in Zr
    加载强度对金属相变压力的影响
  “zr”译为未确定词的双语例句
    Planar shock compression effects on damage and cracking in Zr41Ti14Cu12.5Ni10Be22.5 bulk amorphous alloy are studied using a two-stage light gas gun.
    利用二级轻气炮研究了在平面冲击波高速撞击下,Zr41Ti14Cu12.5Ni10Be22.5大块非晶合金的损伤与断裂行为。
短句来源
    Non Proportional Loading Behavior of 1Cr18Ni9Ti and Zr 4
    1Cr18Ni9Ti和Zr-4合金非比例潜在强化及其微观机理
短句来源
    The rheological behavior of bulk metallic glass Zr_(41)Ti_(14)Cu_(12.5)Ni_(10)Be_(22.5)
    大块金属玻璃Zr_(41)Ti_(14)Cu_(12.5)Ni_(10)Be_(22.5)的流变行为研究
短句来源
    Damage and Cracking of Zr_(41)Ti_(14)Cu_(12.5)Ni_(10)Be_(22.5) Bulk Amorphous Alloy under Planar Shock Compression
    平面冲击波高速撞击下Zr_(41)Ti_(14)Cu_(12.5)Ni_(10)Be_(22.5)大块非晶合金的损伤与断裂
短句来源
    The temperature dependence of viscosity of the bulk metallic glass Zr 41 Ti 14 Cu 12 5 Ni 10 Be 22 5 (Vit1) under constant heating condition was obtained by application of static extension measurement.
    采用静态拉伸方法在连续升温条件下动态地测量了大块金属玻璃Zr4 1 Ti1 4Cu1 2 5Ni1 0 Be2 2 5(Vit1 )的黏度随温度的变化关系 .
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  zr
Lead zirconium titanate (PZT) films (Zr/Ti=45:55) with a high dielectric constant are prepared successfully on the low-resistance Si substrate in sol-gel dip-coating process with PT film used as the buffer layer.
      
The solid acids were prepared by mounting H2SO4 on TiO2 · nH2O and Zr(OH)4, respectively, followed by calcining at 823K.
      
To deal with this contradictory situation, insolvable zirconium tricarboxybutylphosphonate (Zr(PBTC)) powder was employed to make a composite with SPEEK polymer in an attempt to improve temperature tolerance of the membranes.
      
SPEEK/Zr(PBTC) composite membranes were obtained by casting a homogeneous mixture of Zr(PBTC) and SPEEK in N,N-dimethylacetamide on a glass plate and then evaporating the solvent at 60°C.
      
Results showed significant improvement not only in temperature tolerance, but also in methanol resistance of the SPEEK/Zr(PBTC) composite membranes.
      
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Macroscopic stress response and microscopic examination of f.c.c. lCrl8Ni9Ti and h.c.p. Zircaloy 4 under non proportional biaxial loading are made.The results show that periodic softening and subsequent hardening are displayed in both materials. Microscopic analysis indicates that in plane slipping occurs for cubic and hexagonal metals, the former with a lower stacking fault energy. Plastic deformation modes for lCrl8Ni9Ti and Zr 4 change from in plane slippage to wave slippage under biaxial non...

Macroscopic stress response and microscopic examination of f.c.c. lCrl8Ni9Ti and h.c.p. Zircaloy 4 under non proportional biaxial loading are made.The results show that periodic softening and subsequent hardening are displayed in both materials. Microscopic analysis indicates that in plane slipping occurs for cubic and hexagonal metals, the former with a lower stacking fault energy. Plastic deformation modes for lCrl8Ni9Ti and Zr 4 change from in plane slippage to wave slippage under biaxial non proportional loading due to the rotation of maximum shearing stress plane. Results show the dependence of loading history .

研究了面心立方金属1Cr18Ni9Ti和密排六方金属Zr4在非比例复合加载过程中宏观应力响应和微观变形机理.结果表明:两种材料在非比例加载过程中均表现为周期性软化、硬化特征.层错能较低的立方金属和轴比小于1633的密排六方金属,在塑性变形过程中均表现为平面状滑移特征;而在非比例加载过程中,随着最大外加切应力平面的旋转,塑性变形方式从平面状向波纹状转化,使得材料对加载历史比较敏感.

The temperature dependence of viscosity of the bulk metallic glass Zr 41 Ti 14 Cu 12 5 Ni 10 Be 22 5 (Vit1) under constant heating condition was obtained by application of static extension measurement. A few strain rate peaks, which are associated with the glass transition and multistep crystallization, were observed in the temperature strain rate curve. Above the glass transition temperature, the supercooled liquid of the bulk metallic glass showed the Newtonian rheological characteristic,...

The temperature dependence of viscosity of the bulk metallic glass Zr 41 Ti 14 Cu 12 5 Ni 10 Be 22 5 (Vit1) under constant heating condition was obtained by application of static extension measurement. A few strain rate peaks, which are associated with the glass transition and multistep crystallization, were observed in the temperature strain rate curve. Above the glass transition temperature, the supercooled liquid of the bulk metallic glass showed the Newtonian rheological characteristic, and its temperature dependences of viscosity in supercooled liquid region can be fitted well with the Vogel Fulcher Tammann(VFT) equation. The sample exhibited the fragility parameter D * value of 36, the VFT temperature T 0 of 319K and the fragility m value of 30 It was shown that the Vit1 alloy is a strong liquid, similar to sodium silicate liquids. However, the relation between temperature and viscosity deviated from VFT equation below the glass transition temperature.The phenomenon is tentatively interpreted in terms of free volume model and structure relaxation concept.

采用静态拉伸方法在连续升温条件下动态地测量了大块金属玻璃Zr4 1 Ti1 4Cu1 2 5Ni1 0 Be2 2 5(Vit1 )的黏度随温度的变化关系 .在应变速率与温度的关系曲线中 ,观测到了与玻璃转变和晶化过程相联系的多个应变速率峰 .在玻璃转变温度Tg 以上 ,大块金属玻璃Zr4 1 Ti1 4Cu1 2 5Ni1 0 Be2 2 5的过冷液体呈现Newton流体特征 ,其黏度与温度的关系符合Vogel Fulcher Tammann (VFT)关系式 ,拟合得到脆度D =36 ,VFT温度T0 =31 9K ,脆度参数m =30 ,这说明Zr4 1 Ti1 4Cu1 2 5Ni1 0 Be2 2 5的过冷液体是一种类似于硅酸盐类的“强”液体 .在玻璃转变温度Tg 以下 ,粘度与温度的关系偏离VFT关系 ,从结构弛豫的观点出发 ,借助金属玻璃的自由体积模型对其进行了分析和讨论

The microstructure change in the Vickers indent of the Zr-65 Al-7.5 Ni-10 Cu-12.5 Ag-5 metallic glass at room temperature is investigated by transmission electron microscopy. It is found that the indentation-induced crystallization occurs namely underneath the indenter edges, where viscous flow is involved and crystals with the size larger than 1 μm appeav. The selected area electron diffraction shows that the crystalline phases are stable tetragonal CuZr-2 or NiZr-2, but not the icosahedral one that grows...

The microstructure change in the Vickers indent of the Zr-65 Al-7.5 Ni-10 Cu-12.5 Ag-5 metallic glass at room temperature is investigated by transmission electron microscopy. It is found that the indentation-induced crystallization occurs namely underneath the indenter edges, where viscous flow is involved and crystals with the size larger than 1 μm appeav. The selected area electron diffraction shows that the crystalline phases are stable tetragonal CuZr-2 or NiZr-2, but not the icosahedral one that grows as metastable phase on heating. The local temperature rise during indentation can be ignored, which further suggests that the mechanically induced crystallization in a metallic glass is attributed to the viscous flow rather than the local heating effect.

利用透射电镜研究了Zr65Al7.5Ni10Cu12.5Ag5非晶合金的Vickers压痕内微观结构的变化.结果发现,压痕塑性变形诱导非晶合金发生了晶化,在压头棱角下面的区域内有尺寸大于1μm的晶体析出.选区电子衍射分析表明,该析出相是稳定的CuZr2或NiZr2四方晶体,而没有析出该非晶合金在加热过程中的初生相二十面体准晶相,说明非晶合金的机械稳定性与热稳定性是有区别的.打压痕过程中的温度升高是可以忽略的,本工作进一步证实了塑性变形诱导非晶合金晶化的主要动力是粘性流动而非局部热效应.

 
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