過共晶合金 的英文怎麼說

中文拼音 [guògòngjīnggějīn]
過共晶合金 英文
hypereutectic alloy
  • 過 : 過Ⅰ動詞[口語] （超越） go beyond the limit; undue; excessiveⅡ名詞（姓氏） a surname
  • 共 : 共動詞[書面語]1. （圍繞） surround2. （兩手合圍） span with the hand
  • 晶 : Ⅰ形容詞（光亮） brilliant; glittering Ⅱ名詞1. （水晶） quartz; （rock） crystal 2. （晶體） any crystalline substance
  • 合 : 合量詞（容量單位） ge, a unit of dry measure for grain （=1 decilitre）
  • 金 : Ⅰ名詞1 （金屬） metals 2 （錢） money 3 （古時金屬制的打擊樂器） ancient metal percussion instrum...
  1. Based on the analyses on mechanical properties, microstructure and fracture of - the microalloyed steels socrv with various heat treatment technique, it can be affirmed that various fractures arttribute to various mechanism, we can draw conclusion that the strength and toughness of microalloyed steels 50crv will be increase simultaneously by optimal heat treatment technique. to illustrate the mechanism of the strength and toughness of microalloyed steels socrv, we designed the comparative experiment and observed the microstructure of the sample which occurred at different quench and tempering temperature and different tempering time. the last experiment results were determined by the four factors : fined microalloyed elements grains, the decompound of martensite, martensite transformation of remnant austenite and the second phase precipitation

    為解釋微合金化50crv鋼強韌化機理，本文通過對不同淬火溫度，回火溫度，回火時間下的力學性能指標的對比及顯微分析，認為微合金元素的細化晶粒，馬氏體的回火分解，殘余奧氏體的轉變，第二相的沉澱析出共同決定了微合金鋼的強韌化情況，特別是由於微合金元素的存在，其細化晶粒及其碳氮化物的沉澱析出，導致鋼的良好的強韌性，並且如果工藝滿足第二相的沉澱析出強化大於回火馬氏體分解引起的軟化效應，會在硬度曲線中產生明顯的二次硬化現象。
  2. Effects of b on the eutectic solidification of hypereutectic al - si alloy

    合金共晶凝固過程的影響
  3. The rapid solidification process of pb - sn eutectic alloy is investigated with acoustic levitation and the maximum undercooling of 38k has been achieved

    採用聲懸浮無容器處理技術研究了pb - sn共晶合金在深過冷條件下的凝固規律。
  4. The containerless rapid solidification of al - 32. 7wt % cu eutectic alloy in drop tube is investigated. the " lamellar eutectic - anomalous eutectic " microstructural morphology transition occurs with the decrease of droplet size

    採用落管無容器處理技術研究了al - 32 . 7wt cu二元共晶合金在深過冷條件下的快速凝固規律。
  5. 4. under the directional solidification, either sub - or hyper - eutectic alloys, with the increase of growth rate, the lst dendritic arm spacing decreases and 2st dendritic arm spacing is restrained to some extent

    4定向凝固條件下，隨著凝固速率的增加，無論亞共晶合金或過共晶合金，一次枝晶間距減小，二次枝晶生長得到不同程度的抑制。
  6. A green and permanent modificant for hypereutectic al - si alloys

    一種過共晶鋁硅合金的綠色長效變質劑
  7. Effects of manganese content in hypereutectic al - si alloy on properties of alloy

    過共晶鋁硅合金中錳含量對合金性能的影響
  8. Effects of elevated content of mn and fein hypereutectic al - si alloy on tensile strength of an alloy

    高錳鐵含量過共晶鋁硅合金的力學性能
  9. The result shows that with the addition of rare earth elements, ultrasonic irradiation and magnetic field, the chemical component, surface configuration, microstructure and properties of electroless co - ni - b and co - fe - b alloy changes remarkably. such kind of change can be described as the followings. firstly the depositing speed of electroless alloy bath is raised while the polarizability and cathodic overpotential are reduced ; secondly the surface quality of the alloy coating and adhesion of the coating and matrix are improved ; thirdly in the coatings the content of the elements in the transient group increases, but the content of cobalt decreased ; fourthly the amorphous structure is transformed to microcrystal structure and polycrystal structure ; fifthly the microhardness and wear resistance of the coating are enhanced ; sixthly coercitive force is reduced, and magnetoconductivity of the coating is increased ; lastly the magnetic intensity of the coating increases with the addition of energy and light rare earth elements such as ce, la and decreases with the addition of heavy rare earth elements such as y. on the other side, when the alloy coatings passes through the heat treatment under the temperature of 250 or 500, their properties will change

    結果顯示化學沉積co - ni - b 、 co - fe - b工藝在稀土元素（ ce 、 la 、 y 、 dy ） 、能量（超聲波、磁場）介入后，沉積過程、合金成分、鍍層形貌結構和性能都有顯著變化，表現在：鍍液的陰極極化過電位和極化度降低，沉積速度提高；鍍層的結合力、表面質量改善；鍍層中過渡族元素的含量增加，輕元素硼的含量降低，同時證實了稀土元素與過渡族元素共沉積的可能性；鍍層的顯微結構由非晶態向微晶和多晶態轉變；鍍層的顯微硬度與耐磨性提高，力學性能優化；鍍層的矯頑力降低；磁導率提高；鍍層的磁化強度在能量（超聲波、磁場）和輕稀土元素ce 、 la介入后提高，重稀土元素y介入后降低。
  10. Because of the effect of sip porous skeleton, the primary si and the eutectic si were separated on the surface of sip porous skeleton under slow cooling conditions, and there were no typical eutectic microstructures in the al - alloys phase of the composites. 6

    處于si相顆粒間隙的過共晶al - si合金液在緩慢冷卻凝固時，初晶si和共晶si會附著在si多孔體骨架上析出，在最終的復合材料中沒有典型的al - si共晶組織。
  11. Qualitative evaluation of molten al - si alloys by thermal analysis

    過共晶鋁硅合金細化變質劑的研究
  12. The maximal power outputs of 37. 0 mw / cm2 and 30. 0 mw / cm2 for the p - and n - type laminated materials respectively at the temperature difference 490 have been experimentally obtained, which are about 2. 5 and 3. 0 times those of - fesi2. chemical analyses show that the interface failure between the bridge alloy and the semiconductor bi2te3 results mainly from the eutectic mixtures with low melting point and brittle compounds formed during welding and long time annealing at 190. it is found that the electrical properties of a laminated structure are mainly controlled by the wettability of the bridge alloy on the semiconductor surface

    發現： 1 ）疊層材料具有明顯優于均質材料的熱電性能，在490溫差下， p -型和n -型疊層材料的最大輸出功率分別達到37 . 0和30 . 0 （ mw / cm ~ 2 ） ，是同類型均質- fesi _ 2的2 . 5和3倍； 2 ）在焊接過程和190長時間退火處理過程中，焊接過渡層合金和基體半導體（特別是bi _ 2te _ 3 ）之間存在明顯的元素相互擴散，從而在過渡層中形成一些低熔點共晶體和脆性化合物，這是導致疊層材料破壞的主要原因； 3 ）焊接過渡層合金與半導體基體之間的潤濕性是影響界面層電性能的主要因素。
  13. 2. the room temperature tensile strength of alloy made by mlsd relate to the extrusion temperature and the extrusion reduction ratio, with high temperature and reduction ratio, the tensile strength becomes low

    二、多層噴射沉積過共晶a1 - si合金的室溫強度與擠壓溫度和擠壓比有關，擠壓溫度越高，合金的強度會降低。
  14. In order to analyze the effect of structure of hypereutectic al - si alloy on its machinability, the cutting test to two hypereutectic al - si alloys which have the same chemical composition but different structures is made and their cutting mechanism is studied

    為分析過共晶鋁硅合金組織對其切削加工性能的影響，對兩種化學成分相同但是組織結構不同的過共晶鋁硅合金進行了切削試驗研究並探討了其切削機理。
  15. The results show that, after transformation the size, shape and distribution of primary silicon in hypereutectic al - si alloy have a serious effect on the tool life and the machined surface quality of the alloy, the alloy whose primary silicon is fine, spread and dull angular has a better machinability

    試驗結果表明：過共晶鋁硅合金經變質處理后組織中初晶硅的大小、形狀和分佈狀況對切削刀具壽命和合金的切削加工表面質量影響極大，具有細小、分散而形狀圓鈍化初晶硅的合金有比較好的切削性能。
  16. The theoretical calculation based on jh and tmk models is accomplished and predicts that the maximum undercooling for cooperative eutectic growth is 199k

    發現隨著過冷度的增大， al - cu共晶合金發生「規則共晶?不規則共晶」的組織形貌轉變。
  17. Influenced by the alternating current field, except that a little of eutectic iron - phase still is the acicular structure, the most of eutectic iron - phase of the al - 20si - 5fe - mn alloy is refined into tiny particles which is segregated

    Al - 20si - 5fe - xti合金通過交流電場作用，共晶組織全部呈細小的顆粒狀均勻分佈於- al基體上。
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