晶界位移 的英文怎麼說

中文拼音 [jīngjièwèiyí]
晶界位移 英文
grain boundary displacement
  • 晶 : Ⅰ形容詞（光亮） brilliant; glittering Ⅱ名詞1. （水晶） quartz; （rock） crystal 2. （晶體） any crystalline substance
  • 界 : 名詞1 （相交的地方; 劃分的界限） boundary 2 （一定的范圍） scope; extent 3 （按職業、工作或性別等...
  • 位 : Ⅰ名詞1 （所在或所佔的地方） place; location 2 （職位; 地位） position; post; status 3 （特指皇帝...
  • 移 : Ⅰ動詞1. （移動） move; remove; shift 2. （改變; 變動） change; alter Ⅱ名詞（姓氏） a surname
  1. Relaxor ferroelectric single crystals, such as pb ( mg1 / 3nb2 / 3 ) - pbtio3 ( abbreviated as pmnt ) or pb ( zn1 / 3nb2 / 3 ) - pbtio3 ( abbreviated as pznt ), have been reported to exhibit an extremely large piezoelectric constant and excellent electrostrictive properties. such excellent performance makes it fully substitute the traditional piezoelectric ceramics and points to a revolution in ultrasonic transducers, actuators and micro - positioners, making relaxor - based piezocrystals the most promising materials for a broad range of advanced applications. however, it is difficult to grow the high quality single crystals because of the lack of valid thermodynamic data

    新型弛豫鐵電單晶鈮鎂酸鉛（簡稱pmnt ）或鈮鋅酸鉛（簡稱pznt ）是一類新興的功能材料，其在準同型相界附近具有優于傳統壓電陶瓷的較高的壓電常數和電致伸縮系數，可完全代替傳統的壓電陶瓷作為超聲換能器、致動器、微位移器等，使其成為鐵電領域的研究熱點，但如何生長出滿足應用要求的單晶材料卻一直是一個困擾的問題。
  2. The presence of small amount of liquid at grain boundaries tends to form thin viscous layer which surrounds the finer grains. intergranular fracture may occur at the grain boundaries between two fine grains not covered by viscous phases. the high ductility achieved at low strain rates is generally attributed to dislocation glide - creep accommodation mechanisms

    原始晶界上產生少量液相，形成薄的固液共存粘性層並包圍細化的晶粒，沿晶斷裂主要發生在無粘性層的細晶粒間；而在較低應變速率下，三叉晶界位錯攀援?蠕變協調機制鬆弛晶界滑移產生的應力集中，晶界上產生較多液相，有利於晶界滑移進行。
  3. The influences of the pre - stress on the working characteristic of the actuator are analyzed by the measurement of displacement. a numerical current source with alternative working mode and current range is manufactured to provide program - set steady current for the drive coil

    單晶材料消除了晶界對疇壁移動的影響，具有很好的低場下的位移輸出能力，這為微位移致動器的研製奠定了很好的基礎。
  4. The apparent activation volume calculated by the model is about 2500a3, which was ten times larger than that of usual amorphous alloy and was at the same range of the amorphous polymer. the model shows the main deformation mechanism of nanocrystalline ag is grain boundary sliding, which in some extent declares the similar forms of equation with amorphous alloys. with the ananlysis to the hrem of nanocrystalline ag, the discrepancy of the apparent activation volume between the nanocrystalline ag and amorphous alloys is interpreted by the loss of atoms participating in grain boundary sliding without enough reconstruction by the movement of atoms under the low temperature

    運用晶界滑移的熱激活理論對壓縮實驗結果進行了數值擬合，擬合曲線與實驗數據符合很好，得到了晶界滑移的表觀激活體積（熱激活基本單位體積與局域瞬態應變的乘積） ，約為2500a ~ 3 ，先當于幾十個原子體積大小的瞬態變化，約為非晶合金的10倍以上，與非晶高聚物的表觀激活體積相當。
  5. The substructure near the damage position was studied by ebsp, then vonbined with the relationship among substructure grain boundary sliding grain size and material deformation compatibility the mechanics of creep damage was discussed

    使用電子背散射衍射技術研究了不同損傷位置附近的亞結構形成情況，結合亞結構、晶界滑移、晶粒尺寸與材料變形協調性等材料變形特點，對蠕變損傷機理進行了探討。
  6. Under the careful retrospection and analysis on the previous and recent experiments about mechanical behavior of nanocrystalline metals performed by almost main investigators, the dislocation and atomic diffusion is believed to contribute hardly to the deformation of nanocrystalline alloy, and a model based on thermal activation process was applied to fit the experimental data of nanocrystalline ag

    結果表明，納米晶金屬ag的不僅具有比粗晶ag高2 - 6倍的拉伸和壓縮強度，而且在大范性形變階段顯示了極低的加工硬化和應變速率敏感性。結合位錯理路和非晶合金形變特徵，提出納米晶金屬ag的塑性變形主要由於晶界滑移貢獻。
  7. From an examination of the tensile behavior of cz ly12 alloys under different temperature and strain rate, two kinds of deformation and intergranular fracture behaviors were observed that were opposite to the characteristic strain rate range in fine - grained superplasticity. the mechanisms are described as follows. the high ductility achieved at high strain rate is generally attributed to the dominant role of gbs accommodating mechanisms, which is considered as dislocation creep within grains controlled by subgrains

    研究選用自然時效淬火態的ly12鋁合金，進行了一系列不同溫度和應變速率下的單軸拉伸試驗， 480下，觀察到與傳統細晶超塑性特徵區間相反的行為：較高應變速率下，動態再結晶使晶粒細化，促進了晶界滑移，亞晶界控制的晶內位錯蠕變是晶界滑移的主要協調機制。
  8. The microprocesses of deformation and fracture in 18 - 8 stainless steel were observed by in - situ tension in tem. it was found that the dislocations were emitted from the grainboundary and dislocation source inside a grain and slip along their slip system respectively. partial dislocation could also be emitted from the grainboundary, and moved into the grain, and that leaving behind a stacking fault

    摘要浙江人學博1 ：學位論文採用透射電鏡動態拉伸、原位觀察icrlsnigti不銹鋼形變與斷裂過程，發現不銹鋼變形時，晶界和晶內位錯源均可產生位錯，並沿各自的滑移系運動。
  9. Recently bulk tb - dy - fe single crystals have been obtained by magnetic levitation cold crucible without contamination in wuhan university of technology. these excellent single crystals, possessing a large displacement output under low magnetic field, build a foundation for the fabrication of the high precision micro - displacement actuators. the purpose of this research is to manufacture an advanced micro - displacement actuator with this high performance single crystal as the driving unit

    常規的磁致伸縮型微位移致動器大多採用多晶或具有孿晶結構的磁致伸縮材料作為驅動單元，由於晶界和孿晶界對疇壁的移動具有阻礙作用，其低場下的位移輸出較小，調控精度受到很大影響。
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