超細晶粒度 的英文怎麼說

中文拼音 [chāoxìjīnglìdù]
超細晶粒度 英文
ultrafine grain size
  • 超 : Ⅰ動詞1 （越過; 高出） exceed; surpass; overtake 2 （在某個范圍以外; 不受限制） transcend; go beyo...
  • 細 : 形容詞1 （條狀物橫剖面小） thin; slender 2 （顆粒小） in small particles; fine 3 （音量小） thin ...
  • 晶 : Ⅰ形容詞（光亮） brilliant; glittering Ⅱ名詞1. （水晶） quartz; （rock） crystal 2. （晶體） any crystalline substance
  • 粒 : Ⅰ名 （小圓珠形或小碎塊形物） small particles; grain; granule; pellet Ⅱ量詞（用於粒狀物）
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  1. W - cu composites prepared from the precipitation w - cu powder have higher sintered density, better mechanical and physical property, more homogeneous and finer microstructure than those prepared from w - cu powder by the balling - reduction method. in chapter 5, a combination of homogeneous precipitation and ball - milling process, namely the mechano - thermochemical process was employed to prepare ultra - fine w - cu powder

    其中，球磨w一cu復合粉（ hp一m ）壓坯在1150下燒結30min后，可獲得相對密度大於99 %的幾乎全緻密的超細晶粒w一cu復合材料， w的顆粒度小於0 . 5林m 。
  2. The results indicated that, the fabrication process of ultra - fine grain material is mainly determined by the stress, rotate speed and the flux of cooling water. the grain refining and the hardening effect are mostly affected by the rotate speed and the flux of cooling water. compared with commercial ly12, the invalidate strength and the prolongation rate of the ultra - fine grain material are properly improved in the measurement of compression property ; and the abrupt change of the dilatability of the ultra - fine grain material at 500c is found ; also the phenomena of which the grain size of these microstructures is stable when annealed under 300c is observed

    研究表明，採用本文提出的摩擦壓扭強變形區轉移法可以得到棒狀的超細晶材料，軸向壓力、扭轉速度和溫度是採用該方法制備超細晶材料的主控參數；試件的旋轉轉速和冷卻速度對變形區晶粒細化和硬化效果影響顯著；超細晶ly12的壓縮性能與淬火+自然時效狀態的ly12壓縮性能相比，斷裂強度和延伸率均有一定程度的增強；超細晶ly12的熱膨脹系數在550左右發生明顯的變化。
  3. By contrasting the dimension and appearance of fe of different precursors, verified it is true that the dimension and appearance of precursor affect these facets of fe. modern measures, for instance xrd, tem, sem, laser and infrared technique etc. are used to research the technique indexes of sfp of fe, such as crystalline, dimensions and its distribution, shape and appearance, assemble status and its oxygen content

    對所制備的超微fe粉，採用x射線衍射法（ xrd ） 、透射電鏡法（ tem ） 、掃描電鏡法（ sem ） 、激光衍射粒度分佈測定法以及紅外測氧法等現代分析測試手段，詳細考察了超微fe粉的晶態、尺寸、粒度分佈、形貌與團聚狀態、氧含量等多項技術指標。
  4. By means of sem, tem, laser scattered particle analyzer, etc., the formation mechanism of ultrafine sio2 particle was studied. it was found that at the initial stage, the sio2 particle consisted of some minicrystal, but after the initial stage the sio2 particle was formed by some soluble aggregated substance growing on the surface of the early particle

    運用掃描電鏡、透射電鏡、激光粒度分析儀等檢測手段，探討了體系中超細二氧化硅顆粒的形成機理和過程，指出超細二氧化硅粒子前期是由體系中的微晶核組成，中後期則由體系中的可溶性縮合物在其表面生長而成。
  5. We apply the system to the ultra - fine grain steel welding, the simulated mean grain size in cghaz agreed well with the corresponding independent experimental data. in this paper, three factors influencing the grain growth, the steep temperature gradient in haz. the grain boundary liquid and the precipitates particle, were studied specially using mc technique

    研究表明溫度梯度造成的「熱釘扎」現象和晶界液化現象都對靠近熔合線附近的晶粒長大有明顯的阻礙作用，對最終的晶粒大小分佈有重要的影響：而800mpa超細晶粒鑰中的tin粒子山于溶解溫度高，抑制奧氏體晶粒長大的效果十分顯著。
  6. The x - ray diffraction, scanning electronic microscope and the squid were used to characterize the properties of the mgb2 core in mgb2 / fe tapes and wires. the effect of the proportion of mg, b and sic as well as the sintering parameters on the phase formation, microstructure and the critical current densities of mgb2 / fe tapes and wires was discussed in details. the results showed that the high purity of mgb2 core could be synthesized by both the traditional vacuum sintering and the sparking plasma sintering and the vacuum sintering environment restrained the oxidation of mg effectively

    相對于傳統真空燒結， sps燒結方式成相速度快、樣品晶粒細小均勻、 mgb2超導芯緻密性好、晶間連接優良，因而sps燒結樣品的臨界電流密度明顯高於傳統真空燒結樣品，其中未摻雜的帶材樣品經過sps800 ， 15分鐘燒結后，自場下的臨界電流密度jc值在10k時達到8 . 64 105a / cm2 ，而且隨著測量溫度和外加磁場的增加， sps燒結樣品的臨界電流密度下降率比傳統真空燒結樣品緩慢，在20k ，自場時為5 . 97 105a / cm2 ， 20k ， 3t時，臨界電流密度值仍大於104a / cm2 。
  7. The results of pure cu show ecap can produce bulk material of submicrometer level indeed. as the number of passes increases, the initial structure of pure cu has been refined largely. after six passes, i. e. the equivalent true strain of 4 ~ 5, the grain size gradually becomes stable and uniform

    對純銅室溫ecap晶粒超細化行為及組織穩定性的研究表明： ecap技術的確能制備出亞微米級的塊體材料，隨著ecap道次的增加，純銅的組織被大大細化， ecap六道次（即等效真應變4 5 ）后，晶粒尺寸趨于穩定，硬度基本飽和。
  8. The ultra - low carbon steel ( 0. 001 % c ) is subject to a strain of ~ 10 by utilizing equal channel angular pressing of ten passes with route c at room temperature. the grain size is refined to ~ 0. 3m and the resultant steel exhibited the yield strength over 678mpa with a reasonable good elongation of 47. 4 %

    本研究成功實現了室溫下超低碳鋼c方式下的ecap變形，累計等效真應變達到10 ，獲得了晶粒尺寸為0 . 3 m超細晶試樣，其屈服強度達678mpa ，是普通熱軋態的兩倍多，並保持高的塑性。
  9. The highest jc of 8. 64 105a / cm2 at 10k, 0t was obtained in the un - doped mgb2 / fe tape sintered at 800 for 15 minutes by sps. it is worthwhile to note that the jc value was decreased much slowly in this sample with the increase of the testing temperature and magnetic field. for example, the jc was 5. 97 105a / cm2 at 20k, 0t, and at 20k, 3t the jc value was

    從目前試驗結果看，摻雜量為5mol %時線材性能較好，樣品的臨界電流密度在自場下達到6 105a / cm2 ，並且sic摻雜改進了樣品在高場下的jc值，在4t時，摻雜線材樣品的臨界電流密度大大超過未摻雜樣品，這是由於sic的摻入生成了細小均勻的mg2si ，分佈在晶粒
  10. Experimental results show that the grains were gradually triturated to namometer size with milling time and the grain size might be 30nm or so, but the grain size was not decreasing after the powder has been milled for 25 hours. the nano - sized sic was synthesized by ball milling of si and c mixed powders which rare earths as a additive was added to

    結果表明：隨著時間的延長，粉末逐漸細化至納米級，可以細化到30nm左右，但球磨時間超過25h后粉末顆粒繼續細化的速度明顯放慢，並且在球磨的過程因為晶粒細化和晶粒內部發生了嚴重的晶格畸變，納米粉體x射線衍射峰產生嚴重寬化。
  11. 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。
  12. Special ultra fine sub micron grade for high speed milling especially for mould making

    特別適合高速銑削的晶粒度為超細的牌號，特別適合模具製造。
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