晶界裂紋 的英文怎麼說
中文拼音 [jīngjièlièwén]
晶界裂紋
英文
grain boundary cracks-
The cracking with these two types of underfill might become unstable and lead to catastrophic failure at the end. the critical length was about 12m for the assembly with no - flow underfill and 20m for the package with capillary - flow underfill at 20 ?
模擬表明，山固化溫度冷卻到室溫時，所研究的倒裝焊封裝在填充不流動膠時晶元斷裂臨界裂紋長度為12pm ，而填充傳統底充膠時為20hm 。But when heavyly loaded, the former is far better than the latter. the wear resistance of za27 alloyed with mn is no obviously better than that of common za27 alloy. under the sliding friction conditions, the wear resistance at high temperature of za27 is improved by alloyed si and reaches the highest level when the content of si is 1 - 3wt. %
裂紋主要始於脆性相si相和mn相，裂紋沿晶界擴展；在滑動摩擦條件下（常溫） ，含si的za27合金在載重較小時，耐磨性與普通za合金相比沒有明顯提高，但在載荷較大的情況下，其耐磨性遠高於普通za27合金材料；加mn的za27合金與常規za27合金相比，耐磨性沒有明顯提高；在滑動摩擦條件下， si的加入提高了za27合金的高溫摩擦性能。The dfz might fragment and rotate as crack propagation
裂尖前方可能發生形變孿晶，裂紋沿孿晶界擴展。The micromorpholgy and grain boundary microstructure of the material were studied with sem and tem and the grain boundary phase composition were analyzed with eds and x - ray the mechanical properties, micromorpholgy microstructure of grain boundary and phase composition of al2o3 composite ceramics were systematically studied, the effect of additives, the relationship between microstructure and mechanical strength, the sintering mechanism of the material and influence factors of the structure and properties of al2o3 composite ceramics were discussed respectively
系統研究了氧化鋁陶瓷的力學性能、微觀形貌、晶界顯微結構，並討論了各添加組分的作用、材料顯微結構與力學性能的關系以及材料的燒結機理和影響材料結構與性能的影響因素。本論文探討了氧化鋁基復相陶瓷的強韌化機理，實驗表明al _ 2o _ 3 - ticn體系主要是微裂紋韌化。The grain - boundary cracks are found when the deformation of the strip is greater than a value, and these cracks will become marco cracks with the increase of the deformation
變形量過大時，冷軋薄帶內部出現微觀晶界裂紋，並隨著變形量的增加最終發展成宏觀裂紋。The microstructure observation in the microfissures suggests the liquation microcrack results from grain boundary liquation by constitutional liquation of mc carbides and formation of continuous and or semi - continuous low melting liquid films, however, the occurrence of the solid state microcracks can be attributed to the effect of ultrafast transit thermal shock introduced by high energy electron beam
液化裂紋起源於mc碳化物的組份液化而形成的晶界連續或半連續的低熔點共晶液化膜，固相裂紋形成的則是高能電子束流的快速瞬態熱沖擊效應的直接結果。The fiction coefficients of the five sliding pairs in different media were in the succession of, respectively. in distilled water : ual2o3 > ual2o3 / al2o3 > ual2o3 / al24zys > ual2o3 / al24zy > usic / sic in 1mol / l naoh : in air at 50 % relative humidity : and the friction coefficients of the sliding pairs a12o3 / a12o3, a12o3 / zta, a12o3 / a124zy and a12o3 / a124zys were in the order of u
當載荷為60n ，滑動頻率為10hz時，經過400om滑動距離后，在水中a12o3 / a1203 ， a1203億ta ， a12o3 / a124zy和a12o3 / a124zys摩擦副均不能形成有效的潤滑膜，屬邊界潤滑過程，磨損表面產生了裂紋，發生了晶粒拔出。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。( 3 ) both oxide - induced closure and embrittlement of grain boundaries take place for 2 - cr1mo and 2 - cr1mov at high temperature. the change of fatigue crack growth rates with temperature is not so evident as 316land 16mnr
裂紋表面氧化引進的閉合效應和晶界脆化相對比較均衡，裂紋擴展速率隨著溫度升高的變化沒有鐵素體和奧氏體材料明顯。( 1 ) oxidation on the crack surface of 16mnr increase with temperature. oxidation mainly takes place on the crack surfaces at 150 ~ 300, which it is serious both on the crack surfaces and in the grain boundaries at 425. oxide - induced closure at 150 ~ 300 results in the drop of crack growth rates
鐵素體材料16mnr疲勞裂紋表面的氧化隨溫度升高而增大，在150和300時裂紋表面氧化引進的閉合效應要比晶界氧化脆化更明顯，引起在這個溫度范圍內的試驗疲勞裂紋擴展速率下降。分享友人