grain fracture 中文意思是什麼

grain fracture 解釋
穿晶斷口
  • grain : n 1 穀物，糧食〈英國叫 corn〉; 谷類植物。2 穀粒，籽粒。3 （沙、金、鹽等的）粒，顆粒，晶粒。4 些微...
  • fracture : vt. ,vi. （使）破裂；（使）折斷；（使）斷裂。n. 1. 破裂，折斷，斷裂。2. 裂痕，裂縫，裂面。3. 【醫學】挫傷，骨折。4. 【礦物】斷口；【地質學；地理學】斷層。
  1. Based on these experiments, it may be claimed that there is segregation of sn to grain boundaries in 0. 15 % c steel during cooling from a high solution treatment temperature. this segregation reduces grain boundary cohesion, which results in low hot ductility and intergranular fracture

    通過試驗和計算得出: sn在0 . 1swt . % c鋼中發生非平衡晶界偏聚的臨界時間為1245左右，臨界冷卻速率大約為8 / s ，與試驗結果基本一致。
  2. The grain boundary fracture behavior in ni - base bicrystals

    鎳基雙晶體晶界斷裂特性研究
  3. Because the propellant grain is viscoelastic material, the liner and adiabatic layer are also viscoelastic one, the interface debond problem is actually interface crack about elastic - viscoelastic or bi - viscoelastic materials. research about this problem relates to the knowledge of viscoelastic mechanics and interface fracture and combustion. numerical analysis method about interface debond on solid rocket motor is researched in this paper

    由於固體火箭發動機的推進劑藥柱是一種粘彈性材料，襯層和絕熱層也具有粘彈性性質，因此其界面脫粘問題實際上是彈性-粘彈性或雙粘彈性各向同性材料界面裂紋問題，對該問題的研究涉及到粘彈性力學、界面斷裂力學和燃燒學等相關學科。
  4. The electric field strengthens the laminate boundary of 2090 alloy. the laminate strengthening mechanism translates into boundary strengthening and grain inner toughening with more ductility fracture and less intergranular fracture. the ductility property is enhanced with no change of intensity

    對鋁理合金sem實驗發現，電場固溶和時效強化了晶界，和晶內塑性的改善，斷裂特徵出現由分層沿晶斷裂向塑性斷裂轉變，斷麵塑性變形特徵增加。
  5. The results indicate that the fracture toughness is influenced markedly by the different base structure of vermicular east iron and by the form of graphite ; unlike steel, the fracture toughness of vermicular cast iron increases with the yielding strength, while drops drastically with the increase of ratio of graphite grain length to thickness

    試驗結果表明，蠕墨鑄鐵的斷裂韌度受不同基體組織的影響比較明顯；受不同石墨形態的影響顯著，與結構鋼不同，蠕墨鑄鐵的斷裂韌度隨材料的屈服強度增大而增大，隨石墨顆粒的長厚比增加會急劇下降。
  6. With carbon content increasing, the carbide network on the fertile grain boundary sprouting and propagating. the fracture mode has been changed from cleavage to along boundary and the intergranular corrosion induced by solution chromium decreasing

    隨碳含量提高，晶界上碳化物萌發、擴展呈網狀，鑄件脆斷由解理斷裂發展為沿晶斷裂，同時鐵素體不銹鋼晶間腐蝕傾向增大。
  7. By researched and analyzed, it was found that grain fracture had close relation with charge design safety of guns. grain fracture can lead to pressure abnormity in chamber. particularly in the condition of low temperature, it was the main cause leading to chamber blow

    經研究分析，火藥顆粒的破碎直接影響到裝藥設計安全性，造成膛壓異常現象，特別在低溫條件下，火藥破碎是引起膛炸的主要原因。
  8. The dissertation links with charge design safety of guns and constitutes the theory model of relation between grain fracture and interior ballistic performance. the program which resembles the influence of grain fracture to interior ballistic performance is compiled. the relation between grain fracture and exceptional pressure in chamber is analyzed, and an elementary analysis to the principle of chamber blow is made

    本論文是結合火炮裝藥設計安全性的研究課題，通過理論分析和數值模擬的研究手段，建立火藥破碎與內彈道性能關系的理論模型，進行火藥破碎對內彈道性能影響的數值模擬，分析了火藥破碎與膛內異常壓力之間的聯系，並對膛炸機理進行初步分析。
  9. 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。
  10. The impact of random grain boundary distribution and connectivity on intergranular fracture of polycrystalline materials

    隨機晶界分佈和連通性對晶間破壞行為的影響
  11. The particularity of application of principles of linear - elastic fracture mechanics to wood and fracture parallel to grain

    線彈性斷裂力學原理在木材中應用的特殊性與木材順紋理斷裂
  12. Above analysis can provide instructions for grain boundary design and controlling in grain boundary engineering. dynamics intergranular fracture process is modeled with considerations of grain boundaries damage

    通過考慮晶界損傷，進一步對拉伸試樣破壞單元的動態沿晶斷裂過程進行了數值模擬分析。
  13. The results showed that the grain refining by the trace amounts of titanium could improve the tensile stress, percentage elongation and fracture toughness, but had little influence on their yield stress

    結果表明， ti對晶粒的細化可以大幅提高試驗合金的抗拉強度、延伸率和斷裂韌性，但對合金的屈服強度影響不大。
  14. 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。
  15. Testing of leather ; ball compression test for determination of grain expansion capacity and the force of fracture with the lastometer

    皮革檢驗.用lastometer測定粒度膨脹能力和斷裂力的球
  16. Iron and steel. determination using fracture test pieces of the austenitic grain growth tendency and of the hardness depth in tool steels shepherd test

    鋼鐵.用斷裂試驗樣件對奧氏體晶粒增長傾向和對工具鋼硬化深度的測定
  17. The flexural strength and fracture toughness of ti3sic2 material obtained by hot - pressing is 223mpa and 5. 1 mpa m1 / 2 respectively ; the mechanisms of grain bending, grain delamination, crack deflection inside the layered grain, crack deflection and branch, pull out grain are main energy absorbing mechanisms

    ~ 1ti _ 3sic _ 2材料的彎曲強度和斷裂韌性分別為223mpa和5 . 1mpa ? m ~ （ 1 / 2 ） 。主要能量吸收機制為：晶粒的彎曲、層間滑移，裂紋在層間擴展與偏轉，裂紋在晶粒間沿晶界擴展、分叉和晶粒的拔出。
  18. Under the tensile stress, the fracture mode of za27 alloyed with si or mn is a mix type fracture - the plastic fracture and the brittle fracture are coexistence. cracks are mainly stemmed from brittle phases of si and mn and develop along the grain boundary

    適宜的加錳量為0 . 4 - 0 . 8 ；在拉伸應力作用下加入si或mn后的za27 ，合金的斷裂均為混合型斷裂，既有塑性斷裂，也有脆性斷裂。
  19. There are reverse relationships between room - temperature fracture toughness and tensile ductility with the change of grain sizes in two - phase tial - based alloys. but the essence of the reverse relationships is not clear. in order to solve these problems, it is vital to investigate room - temperature fracture mechanisms of tial - based alloys

    另外隨著晶粒尺寸的增加tial基合金的室溫塑性與斷裂韌性呈現相反依賴關系，這種相反依賴關系的本質至今還不是很清楚，要解決這些問題，也必須搞清楚其斷裂機理。
  20. Toughening mechanism of zro2 ( y2o3 ) to alumina ceramic came from the phase change of t - zro2 on the grain boundary. with the content augmentation of zro2 ( y2o3 ), the fracture toughness of the alu

    Mga12o ;和zro :平均熱膨脹系數與a1203的熱膨脹系數比較接近，匹配性較好，不會產生明顯的熱應力，有利於氧化鋁陶瓷力學強度的提高。
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