脆性合金 的英文怎麼說
中文拼音 [cuìxìnggějīn]
脆性合金
英文
brittle alloy- 脆 : 形容詞1 (容易折斷破碎) fragile; brittle 2 (較硬的食物容易弄碎弄裂) crisp 3 (聲音清脆) (of ...
- 性 : Ⅰ名詞1 (性格) nature; character; disposition 2 (性能; 性質) property; quality 3 (性別) sex ...
- 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...
-
Brittleness is often a result of alloying.
脆性往往是合金化的一種結果。: 36 < kth < 37 mpa / m3 / 2, 42 < kih < 44mpa / m3 / 2, 51 < kc < 52 mpa / m3 / 2 through the sem fractography, it is know that the susceptibility to brittle failure at room temperature is more than below 100 ?. and the susceptibility to brittle failure increase with hydrogen increasing, under the sustained loading, ductile cracking appears. the quantity of brittle cracking is more with crack growth
T44mpa m 『 q , sl lt52mpa in 』 」斷口分析表明,該合金充氫后其室溫時的氫脆敏感性大於100oc時的氫脆敏感性;且隨氫含量升高,氫脆敏感性增加:在恆載荷的作用下,該合金裂二紋開始擴展時顯示的是韌性起裂;隨裂紋增長,試樣脆性斷裂的比例增大。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。A general consensus exists related to the influence of slow crack propagation ahead of the crack tip upon the nonlinearity observed in the typical load - deflection response of the concrete specimen, namely, concrete exhibits somewhat quasibrittle behavior, which has been verified by the inapplicability of the conventional linear elastic fracture mechanics ( lefm ) and fracture models suitable for metal - like materials
現在已經意識到,混凝土在其典型的位移曲線中呈現出的非線性特徵是由於裂縫在端部的緩慢擴展引起的,可以認為是混凝土的一種半脆性性能。這是在發現傳統的線彈性斷裂力學( lefm )和適合金屬類材料的斷裂模型不適用於混凝土研究時得出的結論。The fractal is a geometrical figure with self - similar symmetry, and it is an important tool for characterizing irregular structures in nature that are self - similar on certain length scales. for example, the koch curves can be viewed as a mathematical model for coastlines, percolation model can be used to mimic mixture of mental and insulator, self - avoiding walks can serve as a model for linear polymers, and rock fracture mode can stimulate the process of brittle fracture of rock, and so on
分形是具有自相似對稱性的幾何圖形,可用來模擬自然界中在一定尺度范圍內具有自相似對稱性的不規則結構,如koch曲線可用來模擬海岸線,滲流模型可模擬金屬絕緣體混合物,自迴避無規行走模型可模擬線性聚合物,巖裂模型可模擬真實巖體的脆性破裂等。The planeness and integrality of the flier - plate were ensured effectively by exerting restrictive pressure, controlling heating and cooling rate, lowering welding temperature or reducing welding time as much as possible, etc. theoretical model of creating quasi - isentropic compression via 93w - ofc - tc4 - a1 - mb2 system flier - plate with graded wave impedance was established, and numerical simulation of the impact process was then carried out
採取施加外部機械力、控制升降溫速率以及盡量降低焊接溫度或減少焊接時間(防止脆性金屬間化合物的過度增長)等措施,確保了焊接接頭的平整性和界面結構的完整性。建立起梯度飛片擊靶的理論模型,對93w - ofc - tc _ 4 - al - mb _ 2系波阻抗梯度飛片的擊靶過程進行了數值模擬計算。The fracture of ct20 alloy was of plastic dimples character at rt, while some holes and cleavage appeared at 20k, showing some brittle feature
Ct20合金室溫拉伸斷口以塑性韌窩為主要特徵, 20k拉伸時斷口上出現了一些孔洞和解理臺階,表現出一定的低溫脆斷特徵。The high speed steel of composite roll is characteristic of high carbon and high alloy elements. so it is easy to form a lot of netlike carbides. these carbides which are very hard and fragile and are very difficult to be eliminated by heat treatment can depress the properties of high speed steel
復合軋輥用高速鋼具有高碳和高合金的特徵,容易形成大量網狀碳化物,這些網狀碳化物又硬又脆,會嚴重降低高速鋼的性能,且難以用熱處理的方法予以消除。The alloy component and the process parameters of the precision casting ( including the exit temperature from furnace, pouring temperature, mould preheating temperature, holding time, cooling form ) have a certain influence on the problem of the blade brittles
摘要合金含量、精鑄工藝參數(出爐溫度、澆鑄溫度、模殼預熱溫度、保溫時間、冷卻方式)對葉片脆性問題存在一定的影響。The complicated compositions and properties of concrete, a kind of brittle material, have an important influence on its sawing process, and consequently on the sawing efficiency of diamond blade
混凝土是一種特殊的復合脆性材料,其組分和性質的復雜性嚴重影響了金剛石鋸片鋸切加工過程,降低了金剛石鋸片的使用效率。Firstly, basing on the knowledge of soft magnetic materials fabricated by the powder metallurgy ( mp ), we brought forward a new ideal about the composite powder, which is to distribute brittle metal powders ( si ) to the surface and gaps of the plastic ones ( fe ), then composite particles in which plastic metal powder is packaged by brittle ones are formed by further deformation
基於粉末冶金制備軟磁材料的相關基礎知識,我們首先提出一種全新的粉末復合思路,即將脆性金屬粉末以不同粒度范圍分佈在塑性金屬粉末的表面和間隙中,在進一步受應力變形時,形成塑性金屬包裹脆性金屬的復合包裹體。The objective of this paper is to obtain metal - ceramic composite materials with better complex properties by the way of preparing nano - composite powders of metal and ceramic. in our thought, firstly we should prepare nano - ceramic powders coated with metal, and then during the period of sintering, the film of metal could prevent the nano ceramics powder from dumpling and keep the powders to be nano - sized
這樣,在隨后制備塊材的燒結過程中,由於復合粉體復合充分,相容性提高,結合力高,另外金屬表面層可抑制納米陶瓷粉體的融合長大,使粉體在燒結后保持納米尺寸,從而發揮納米顆粒的作用;同時通過引入均勻分佈的韌性金屬相,進一步改善陶瓷的脆性。The accidental quenching, occurring in the sintering process, will make the steel back of a powder alloy brake lining brittle and useless. in this paper, an annealing process has been adopted to regain the plastic property of the steel back while the other properties of cg03 brake linings are still remained
粉末合金剎車片在燒結後有時會意外淬火,造成剎車片鋼背脆化而報廢.採用一種退火工藝,在保持剎車片其它性能的同時,使剎車片鋼背恢復塑性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。The fractorgraphy analysis show that in the layer rich in w and mo, the feature of fracture is brittle fracture which follow the bordline of crystal. in sections rich in the felt metal, the feature of fracture is ductile fracture. in w - mo layer, the feature of fracture are brittle fracture and some ductile fracture
斷口形貌特徵研究表明,富w區、富mo區主要為沿粒界脆性斷裂;粘結金屬發生韌性斷裂; w - mo混合區為顆粒的沿粒界脆性斷裂和粘結相的韌性斷裂的混合型斷裂;富ti區為典型的穿晶解理斷裂; mo - ti混合區以穿晶解理斷裂為主,顆粒邊界表現出準解理斷裂特徵。The proposed wear mechanisms of the materials without oil lubrication were the followings : the wear mechanisms of the ferroalloy are adhesive wear, abrasive wear, and some oxidation wear. the wear mechanisms of the composites are abrasive wear and the brittle peeling off. the abrasive wear and the brittle peeling off incr eased with the increase of sic particles content in the composites
在無潤滑條件下,通過對磨痕形貌的觀察,認為鐵基合金的磨損機理主要是粘著磨損和磨粒磨損,同時伴隨有一定程度的氧化磨損;加入sic後主要是磨粒磨損和脆性剝落,且sic越多材料的脆性剝落越嚴重。In contrast, the best - known shape - memory alloy, nickel - titanium, which also demonstrates this super - elasticity, soon gets hard and brittle with frequent deformations
相較之下,最為人所知的形狀記憶金屬鎳鈦合金雖然也有類似的超級彈性,但在反覆變形之後,就會變得堅硬而易脆。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。The results show that the corrdlation between the alloy component and the process parameters has notable influence on the brittle of the stator blade
結果表明,合金含量及工藝參數的交互作用對葉片脆性影響顯著。Abstract : in this paper, through the hydrogen - filling test for the kovar alloy of austenite under fixed load, the kovar alloy hydrogen brittleness sensitivity is measured its feature on hydrongen brittleness fracture is studied, and the way of solving the fracture of the kovar alloy is put forward
文摘:通過對面心立方奧氏體的可伐合金衡載荷充氫試驗,測試了其氫脆敏感性並研究了氫斷裂特徵,提出了解決可伐合金脆斷的方法。分享友人