steel phases 中文意思是什麼
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Using in situ formation of ternary boride base cermets hard phases through chemical reactions and sinterbonding onto steel substrates though liquid sintering we successfully prepared a kind of ternary boride base cermet
摘要通過化學反應將原料粉來生成三元硼化物硬質相併通過液相燒結燒與鋼很好的結合，用這種工藝成功地在鋼基體上塗覆了預壓制的三元硼化物基金屬陶瓷。 -
Considering to the continuous rigid - frame bridge construction characteristic, putting forward the idea of reverse to optimize prestressed steel. according to different construction phases, the paper gets the formual of the cantalever phase, join two section of a bridge phase and the vertical prestressed steel, and works out corresponding program
考慮大跨徑預應力混凝土連續（剛構）橋施工的特點，提出了基於倒裝方法的預應力靜定束、合龍束以及豎向束的優化設計理論，並編制了相應的計算程序。 -
Most existing constitutive models do not take into account the interactions between different phases of pearlitic steel and cannot illustrate why such kind of materials has excerllent mechanical properties. it is, therefore, necessary to develop a new method, which can describe the macroscopic behavior, damage and failure of the materials and their micro structural dependence. in this paper, based on a non - classical theory of plasticity and the continuum damage mechanics, a damage evolution based on an ellipsoidal void model for mixed hardening materials is obtained
已有的關于珠光體鋼的本構模型多難以考慮珠光體材料的微結構及其相互作用，難以解釋珠光體材料何以具有較好的綜合力學性能，因此有必要發展一種多層次的細觀力學分析方法以研究此材料在復雜加載條件下計及微結構特徵的宏觀響應特性，使材料的強度、疲勞壽命的預測與其微結構及各組成相的損傷及微觀應力應變演化規律聯系起來，進而為材料微結構的設計提供依據。 -
In order to improve the quality of the voltage signals, this paper has adopted the scheme of three phases and six organs in signal - generator part, which can eliminate the errors caused by the assembly warp and the zero shift of organs. this paper also has analyzed the distribution and varying rules of the magnetic field in the signal - generator part, then based on the conclusion of the analysis improved the structure of signal - generator, which could completely eliminate the noise signal caused by the roughness of the face on the magnetic steel ring. the improvement not only met the requirement of this study, but established the theory foundation for the super - high precision magnetic encoder in future research
因此，為提高原始電壓信號的質量，本文採用三相六元件的信號發生方案，通過差分處理濾除了由於裝配偏差和零點漂移帶來的信號誤差;本文對編碼器信號發生結構進行了磁場分析，依據磁場分析的結論對編碼器常用的信號發生結構進行了改進，改進后的結構利用積分原理在理論上能夠完全消除信號中由磁鋼環表面粗糙度引起的信號噪聲，進一步提高了信號質量，此結構不僅滿足了本課題的需要，而且為今後研製超高精度的磁電式編碼器奠定了理論基礎。 -
The researches of vacuum electron beam self - material brazing specimen find that element interdiffusions are strongly occurred in interface and some new phases are precipitated during welding. the interdiffusion process is likely approached to nb atoms diffusing into stainless steel side according to the analysis of the morphology and eds of the interdiffused layer
Tem分析發現， 1300退火形中國原子能科學研究院碩士學位論文成的擴散層中有大量的針狀析出相產生，經sadp測定為乙一（ nb ， ni ）相，而基體相為（ ni ， cr ， nb ， c ） fe一。 -
In the interdiffused layer the diffused length of nb - 1zr alloy elements is longer than that of stainless steel elements, the diffused length of ni is the longest. there are a mass of needle shape precipitated phases in the interdiffused layers formed by 1300 annealing, which are determined to be a metastable cph - ( nb, ni ) by sadp method
通過對真空退火形成的互擴散層的金相和成分分佈分析可以發現，不銹鋼元素中ni元素在nb合金中的擴散速度最快， fe 、 cr元素次之；而nb元素向不銹鋼中的擴散距離要比不銹鋼元素向nb合金中的擴散要深得多。 -
Analyses showed that the effect of heat treatment is remarkable to 304 stainless steel fibers. and a new martensitic phases formed, and ms increased during annealing at 180c ; annealing above 180c decreased the ms. after annealed in the range of 380c ~ 440 c, the he increased and the product ( mr hc ) improved. it was also shown that annealing affected the mechanical properties of 316l ss fibers obviously
304不銹鋼纖維在180附近退火處理其ms略增加，其內部相變與一般的304不銹鋼體材料存在差別； 380 440區間退火處理，其矯頑力急劇增加、磁能積參數配合比較好；退火熱處理對316l不銹鋼纖維的力學性能作用明顯。 -
Based on the experimental results and the correlative chemistry theory, the phases formed in the process and its influenceable factors were studied. the significant results were enumerated as follows : as for the mn - h2o system, 5g pure mn scraps ( 99. 5 %, - 200mesh ) and distilled water served as the starting materials were milled by high energy ball miller together with 200g steel balls as the milling medium. the experiments were conducted with the rotation speed of 380rpm. - mn3o4 nanopowders were fabricated after milling some time and would experienced phase transformations if continue to be milled. the reaction would be accelerated if a little of hcl or mnso4 was added while be decelerated if. a little of naoh was added. the - mn3o4 phase with particl size between 20 ~ 100 nanometer was obtained after milling 1. 5h when trace hcl was added. the oxygen added to the ball tin has little effect on the reaction
主要實驗結果如下: （ 1 ）對于mn - h2o系，通過高能行星式球磨機，在50ml蒸餾水中球磨5gmn粉末，球料比為40 : 1 ，轉速為380rpm ，球磨一定時間后獲得了納米級單相- mn3o4 。隨著球磨時間的延長，生成的- mn3o4會繼續被氧化或發生晶型轉變。加入微量hcl或mnso4會明顯加快mn的反應，加入hcl后，球磨1 . 5h后即獲得粒徑為20 100nm的單相- mn3o4粉末;加入微量的naoh會抑制mn反應生成- mn3o4 。
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