The results show: the strongest bond is the Al-Al bond in the segregated cell without containing vacancy, where the Al atomic covalence radius is greater than that of Li atom in the cell; while the strongest bond is the Al-Li bond in the segregated cell containing vacancy, and the Al atomic covalence radius in the cell is less than that of Li atom. Since the difference of electronagativity between the Al and Li atoms is obvious, it is inclined to formed the Al-Li segregated cell of short range order structure in the condition of vacancy present. The short range order structure containing vacancy is probably the embryo or precursor structure of the metastable phase δ′(Al3Li). Because the strongest covalent bond in the Al-Li-vacancy segregated cell in alloy formed in quenching is the main strength reason for supersaturated solid solution of alloy. The bond net of succeeding precipitation of δ′(Al3Li) has the picture of anisotropic Al-Al bonding and the bond intensity enhanced. Since the δ′(Al3Li) is coherence with matrix, the bond net strength is enhanced by the precipitation of δ′(Al3Li) and so strengthen the alloy.

計算結(jié)果表明：不包含空位的偏聚晶胞的鍵絡(luò)最強(qiáng)鍵為Al—Al鍵午夜看国产一区二区三区奸逼黄片，其中Al原子的共價半徑較Li原子的共價半徑要大；而含空位的偏聚晶胞的最強(qiáng)鍵為Al—Li鍵18岁.com， Al原子的共價半徑要比Li原子的共價半徑要小；在空位存在的情況下，由于Al原子與Li原子的電負(fù)性相差明顯黄色一区二区，促使Al和Li原子結(jié)合久久国产午夜一区二区福利，傾向形成Al-Li短程序結(jié)構(gòu)偏聚區(qū)，這種含空位的短程序結(jié)構(gòu)很可能就是δ′(Al3Li)亞穩(wěn)相的前兆結(jié)構(gòu)和生長胚胎；由于Al-Li-空位有序偏聚晶胞的Al—Li鍵絡(luò)比基體鍵絡(luò)要強(qiáng)許多草草影院日本欧美国产第一页，因此，淬火過程中合金生成的Al-Li-空位偏聚晶胞對合金過飽和固溶體起主要強(qiáng)化作用十八禁又爽又黄又爽又色的网站；后續(xù)析出的δ′(Al3Li)亞穩(wěn)相鍵絡(luò)各項異性顯著，鍵絡(luò)強(qiáng)度明顯提高；由于Al3Li與基體共格禁18岁在线永久观看，其大量均勻彌散析出起到提升基體整體鍵絡(luò)強(qiáng)度欧美专区第1页，同樣對合金產(chǎn)生強(qiáng)化作用午夜片在线看。

The results show: the strongest bond is the Al-Al bond in the segregated cell without containing vacancy, where the Al atomic covalence radius is greater than that of Li atom in the cell; while the strongest bond is the Al-Li bond in the segregated cell containing vacancy, and the Al atomic covalence radius in the cell is less than that of Li atom. Since the difference of electronagativity between the Al and Li atoms is obvious, it is inclined to formed the Al-Li segregated cell of short range order structure in the condition of vacancy present. The short range order structure containing vacancy is probably the embryo or precursor structure of the metastable phase δ'(Al3Li). Because the strongest covalent bond in the Al-Li-vacancy segregated cell in alloy formed in quenching is the main strength reason for supersaturated solid solution of alloy. The bond net of succeeding precipitation of δ'(Al3Li) has the picture of anisotropic Al-Al bonding and the bond intensity enhanced. Since the δ'(Al3Li) is coherence with matrix, the bond net strength is enhanced by the precipitation of δ'(Al3Li) and so strengthen the alloy.

計算結(jié)果表明：不包含空位的偏聚晶胞的鍵絡(luò)最強(qiáng)鍵為Al-Al鍵欧美操逼打开直接看的黄片，其中Al原子的共價半徑較Li原子的共價半徑要大；而含空位的偏聚晶胞的最強(qiáng)鍵為Al-Li鍵在线看免费A√片，Al原子的共價半徑要比Li原子的共價半徑要谐赡耆嘶粕悠翟谙呙夥选国产.com；在空位存在的情況下，由於Al原子與Li原子的電負(fù)性相差明顯www.akhm.黄片一级，促使Al和Li原子結(jié)合产精品久久，傾向形成Al-Li短程序結(jié)構(gòu)偏聚區(qū)，這種含空位的短程序結(jié)構(gòu)很可能就是δ'(Al3Li)亞穩(wěn)相的前兆結(jié)構(gòu)和生長胚胎大地影视app官网；由於Al-Li-空位有序偏聚晶胞的Al-Li鍵絡(luò)比基體鍵絡(luò)要強(qiáng)許多啊灬轻点灬视频在线观看软件，因此国产精品嘿咻嘿咻免费视频，淬火過程中合金生成的Al-Li-空位偏聚晶胞對合金過飽和固溶體起主要強(qiáng)化作用无码国内精品久久人妻系列；后續(xù)析出的δ'(Al3Li)亞穩(wěn)相鍵絡(luò)各項異性顯著欧美亚洲一级视频免费在线，鍵絡(luò)強(qiáng)度明顯提高99在线视屏；由於Al3Li與基體共格，其大量均勻彌散析出起到提升基體整體鍵絡(luò)強(qiáng)度永久免费亲热激烈网站，同樣對合金產(chǎn)生強(qiáng)化作用。

Molecular dynamics simulation was carried out to study transformation pseudoelasticity in NiAl alloy with a initial B2 structure, using EAM type interatomic potential for NiAl.

利用NiAl合金的嵌入原子勢欧美一级片一区，進(jìn)行了B2結(jié)構(gòu)NiAl單晶中相變偽彈性的分子動力學(xué)模擬模擬過程中系統(tǒng)的徑向分布函數(shù)和鍵連線原子分布圖的變化表明搡女网站，在外加拉應(yīng)力的作用下人人操人人看人人玩人人爱，B2結(jié)構(gòu)的奧氏體向L10結(jié)構(gòu)的馬氏體轉(zhuǎn)變新A级片一区，馬氏體在長大過程中發(fā)生了變體間的轉(zhuǎn)化與合并精品99污，不同取向的變體之間由于自協(xié)調(diào)效應(yīng)形成共格的孿晶界面免费毛片在线播出。

Through cyclic hydrogen bonding with motif formed by coordinated water molecules and coordinated hydroxyl groups of dhbd from adjacent tetranuclear units, these adjacent neighbors are connected to afford a 1D supramolecular chain along axis a, which is further extended via aromatic intercalations and other crystallization water molecules into a 3D structure with channels.

毗鄰的四核單元通過配位H2O分子和配位羥基O原子形成的 R 22(8)型環(huán)形氫鍵橋的連接日本www免费观看，沿a軸方向構(gòu)建了四核單元交替相連的一維超分子鏈；鏈間籍苯環(huán)的π-π堆積作用和晶格水分子氫鍵鏈的連接進(jìn)一步擴(kuò)展為具有隧道的三維結(jié)構(gòu)日韩欧美女自拍图片视频网站在线观看。

ABSTRACT In order to study the thermally activated characteristics of plastic deformation and the effect of alloying element on the thermal activation of structural steels, the properties of plastic deformation for 20g and 13Ni3CrMoV steels have been examined in the temperature of 77—473K and strain rate of 〓. The experimental phenomena show that the effective stress of plastic deformation decreases with the increase of alloying elements content (namely solute solution softening) and the frequency factor deceases with the increase of effective stress.

本文以13Ni3CrMoV鋼焊接結(jié)構(gòu)的動態(tài)斷裂破壞為背景黄色网址免费呀，通過系統(tǒng)測試20g和13Ni3CrMoV鋼的動態(tài)屈服特性，分析比較了結(jié)構(gòu)鋼的形變熱激活特點国产第一视频毛片，從頻率因子〓隨有效應(yīng)力σ〓增大而下降和合金固溶軟化的實驗現(xiàn)象出發(fā)思思热在线免费观看，在位錯以彎折方式克服晶格Peierls位壘的基礎(chǔ)上，提出了溶質(zhì)原子與螺型位錯熱激活彎折相互作用的物理模型和σ〓-T分段線性關(guān)系的形變熱激活理論假設(shè)，并借助計算機(jī)數(shù)值模擬欧美黄色视频欧美黄色视频，分析探討了合金固溶軟化的微觀機(jī)制欧美喷水大屁股。

What makes minerals special is the way that the atoms of those elements are arranged in lattices which create unique crystalline structures and shapes.

礦物質(zhì)的特別之處是那些礦物質(zhì)的原子是按晶格結(jié)構(gòu)排列，這就形成了其獨特的水晶結(jié)構(gòu)與形狀国产专区系列。

The results show that the alloying element Al mainly exists in the Cr site in the NbCr2 Laves phase.

結(jié)果表明：合金元素Al主要占據(jù)了Laves相NbCr2金屬間化合物中Cr原子的晶格位置大陆视频国产精品短视频。

The low temperature buffer layer was epitaxied on the Si substrate at the temperature of 300°C. Non-finite ZnO was grown on the substrate due to the low temperature at which the Zn and O atoms is easy to be absorbed on the substrata, which could relaxed effectively the effects of the lattice mismatch between the substrate and ZnO thin films on the quality of the ZnO films and could reduce the formation of distortion and defects.

在 300℃溫度下生長了一層 ZnO 薄膜，由于生長溫度較低 Zn色库视频、O 原子容易被吸附到襯底的表面導(dǎo)致非定形的 ZnO 的生長爱爱视频午夜福利，有效減緩了襯底與 ZnO 之間的晶格失配帶來的影響，降低了失配位錯和缺陷的產(chǎn)生99re视频这里只精品。

Usually the model is given by the foregone atomic structure or crystallattice, however it can not make sure that every atom in the model is in equilibrium state.

納米尺度下材料模型的建立一般是根據(jù)已知材料的原子排列或晶格結(jié)構(gòu)直接給定久久久久久久久久久久网，這并不能保證模型中所有粒子處于平衡狀態(tài)。