The primary phases of Al-10% Cu, Al-20% Cu Al-40% Cu alloy are nearly equiaxed spherical or rose spherical by semi-solid processing. Compared with the coarse arborization of Al-10% Cu, Al-20% Cu Al-40% Cu alloy of conventional casting, the structure of alloy is extremely improved and the appropriate grain size for the engineering application is obtained.

結(jié)果表明：利用半固態(tài)加工，可以使Al-10%Cu超碰97无码在线观看、Al-20%Cu、Al-40% Cu合金的初生相呈近等軸的球狀或薔薇球狀，與普通鑄造Al-10% Cu91日本在线精品高清观看、Al-20% Cu、Al-40%Cu合金較粗大的樹枝狀相比国产精品嫖娼在线性色av，合金的組織得到顯著的改善亚洲综合Av乱码，達(dá)到了工程應(yīng)用晶粒大小。

Furthermore, the metallic glass samples are prepared by vacuum injection method and the rationality of above-mentioned relationships and RBF models is directly verified. It is shown that there are extremum phenomena between the Rc andΔd ,Δe and v respectively. However, the positions of the extremum are different from different alloy systems and the extremum phenomena may be related to the optimum composition region and the optimum additive quantity. More elements in the alloy are in favor of the improvement of the GFA. And as for the high GFA alloy, the atomic percentage, atomic radius difference and atomic electronegativity difference are harmoniously matched.

d久久黄色网址、Δe和v與臨界冷卻速度Rc的關(guān)系中都出現(xiàn)極值現(xiàn)象嗯不要视频，對(duì)于不同的合金體系，極值出現(xiàn)的位置不同国产黄A黄色；金屬玻璃的最優(yōu)成分范圍以及各種添加元素的最佳添加量行為日日摸夜夜添免费毛片，可能與此極值現(xiàn)象相關(guān)；合金中包含的組元數(shù)目多有利于提高其玻璃形成能力欧美黑粗大视频，玻璃形成能力強(qiáng)的合金欧美爱爱片，其各個(gè)組元的原子百分含量、組元原子半徑差及其電負(fù)性差之間的搭配是很和諧的7777在线视频；融合建模的合金系之間包含的主要組元數(shù)量和種類越相近国产黄色免费在线观看，所建立的模型的可靠程度越高，其預(yù)測(cè)結(jié)果與實(shí)測(cè)結(jié)果越吻合亚洲精品偷拍第2页。

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(jì)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鍵欧美精品黄，其中Al原子的共價(jià)半徑較Li原子的共價(jià)半徑要大；而含空位的偏聚晶胞的最強(qiáng)鍵為Al—Li鍵www.色色色色， Al原子的共價(jià)半徑要比Li原子的共價(jià)半徑要泄坊粕笃；在空位存在的情況下66J8影院在线观看，由于Al原子與Li原子的電負(fù)性相差明顯国产女精品网站91，促使Al和Li原子結(jié)合，傾向形成Al-Li短程序結(jié)構(gòu)偏聚區(qū)人人看人人爱人人操人人做，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(zhǎng)胚胎3344e国产在线观看；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，因此看av网址，淬火過(guò)程中合金生成的Al-Li-空位偏聚晶胞對(duì)合金過(guò)飽和固溶體起主要強(qiáng)化作用日韩久久精品麻豆出品AV；后續(xù)析出的δ′(Al3Li)亞穩(wěn)相鍵絡(luò)各項(xiàng)異性顯著外国免费黄色网站，鍵絡(luò)強(qiáng)度明顯提高；由于Al3Li與基體共格美女让我捅，其大量均勻彌散析出起到提升基體整體鍵絡(luò)強(qiáng)度人人操天天射人人人玩，同樣對(duì)合金產(chǎn)生強(qiáng)化作用。

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(jì)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鍵国产一级毛片无码aaaaaa，其中Al原子的共價(jià)半徑較Li原子的共價(jià)半徑要大在线免费观看黄色一级视频；而含空位的偏聚晶胞的最強(qiáng)鍵為Al-Li鍵，Al原子的共價(jià)半徑要比Li原子的共價(jià)半徑要腥巳瞬俨俨俑筛伞公侵犯人妻中文字幕在线视频；在空位存在的情況下，由於Al原子與Li原子的電負(fù)性相差明顯玖玖色精品在线，促使Al和Li原子結(jié)合欧美日韩在线一，傾向形成Al-Li短程序結(jié)構(gòu)偏聚區(qū)两男一女一级A片免费看，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(zhǎng)胚胎晚上网站h欧美；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，因此毛片视频免费观看高清在线，淬火過(guò)程中合金生成的Al-Li-空位偏聚晶胞對(duì)合金過(guò)飽和固溶體起主要強(qiáng)化作用日韩国产在线；后續(xù)析出的δ'(Al3Li)亞穩(wěn)相鍵絡(luò)各項(xiàng)異性顯著，鍵絡(luò)強(qiáng)度明顯提高一木高清dvd；由於Al3Li與基體共格人妻无码亚洲，其大量均勻彌散析出起到提升基體整體鍵絡(luò)強(qiáng)度，同樣對(duì)合金產(chǎn)生強(qiáng)化作用无吗不卡强奸轮奸视频。

Sb can combine with Cu and P to form a low melting point compound which lowers the melting point of binary Cu-8P eutectic alloy by nearly 200℃. Bi and Cu can create compounds with low melting point(270℃) distributing at the boundaries and that is the reason why the melting point of (Cu-8P)-Bi is lower than that of binary Cu-8P eutectic alloy. The eutectic cluster can be refined with the addition of Fe, and that is the reason why the addition of Fe can decrease the melting point of Cu-8P alloy. Two means of decreasing the melting point of Cu-8P are found.

一定量的Sb與Cu毛片大全免费， P形成低熔點(diǎn)相，從而大幅降低了Cu-8P合金的熔點(diǎn)欧美日韩性爱视屏一，使其熔點(diǎn)降低近200℃激情偷乱人伦视频；加入少量Bi后， Bi與Cu在共晶團(tuán)晶界上形成熔點(diǎn)為270℃左右的低熔點(diǎn)化合物午夜一级黄片，且Bi的加入明顯細(xì)化Cu-8P合金共晶團(tuán)AV片网站在线观看com.，從而使Cu-8P合金的熔點(diǎn)降低；加入Fe能明顯細(xì)化Cu-8P合金的共晶團(tuán)国产成人男女在线观看网站视频免费，使層片間距由8μm減為2μm以下激情女人综合网，并使共晶團(tuán)由層片狀向短棒狀轉(zhuǎn)變，雖然Fe與Cu形成熔點(diǎn)為806℃的高溫相久久免费美女黄片视频，但Fe的細(xì)化作用使得Cu-8P合金的熔點(diǎn)降低欧美性爱兔费网站，但降低幅度不大。

Using Mo powder,Fe-B alloy powder,and Fe powder as raw materials,and adding Cr,Ni and C alloy and agent polyvinyl butyral,Mo_2FeB_2 hard alloy was clad on a Q235 steel substrate to form a new type of cladding material with excellent wear and cor- rosion resistance property by means of vacuum liquid phase sintering technique.

以Mo粉亚洲国产高清一区二区三区不卡、Fe-B合金粉高潮网址、Fe粉為基本原料日本欧美韩国欧洲亚洲女性，摻加適量合金元素Cr，Ni亚洲色图你懂，C韩国A级黄色电影，以及有機(jī)粘結(jié)劑聚乙烯醇縮丁醛，采用真空液相燒結(jié)法在Q235鋼基體表面制備Mo_2FeB_2硬質(zhì)合金覆層精品国产AV第二页，獲得了力學(xué)性能良好且耐磨抗蝕的新型硬質(zhì)合金覆層材料www.dxj久久av。

The results show that the flow stress decreases with increasing deforming temperature and increases with increasing strain rate. The flow stress of the alloy during hot compression deformation can be described by constitutive equation in hyperbolic sine function with a hot deformation activation energy of 196.27 kJ/mol. Partial recystallization takes place in the alloys deformed at a high temperature or at a low strain rate, and large number of dislocations and subgrains are observed in the alloy. The elongated grains observed in the samples coarsen with increasing temperature and decreasing strain rate. Correspondingly, the subgrain size increases and the dislocation density decreases. The main soften mechanism of the alloy transforms from dynamic recovery to dynamic recrystallization.

結(jié)果表明：Al-Cu-Mg-Ag耐熱鋁合金在熱壓縮變形中的流變應(yīng)力隨著溫度的升高而減小，隨著應(yīng)變速率的增大而增大三级毛片视频；該合金的熱壓縮變形流變應(yīng)力行為可用雙曲正弦形式的本構(gòu)方程來(lái)描述一级二级毛片免费看不卡，其變形激活能為196.27kJ/mol；在變形溫度較高或應(yīng)變速率較低的合金中發(fā)生部分再結(jié)晶人人摸人人操，并且在合金組織中存在大量的位錯(cuò)和亞晶亚洲综合黄网；隨著溫度的升高和應(yīng)變速率的降低，合金中拉長(zhǎng)的晶粒發(fā)生粗化99国内精品人人操，亞晶尺寸增大精品资源在线，位錯(cuò)密度減小，合金的主要軟化機(jī)制逐步由動(dòng)態(tài)回復(fù)轉(zhuǎn)變?yōu)閯?dòng)態(tài)再結(jié)晶无码小视频在线观看。

In this study, copper alloy adding Ti-Zr and Al-Zr was the target and made the cupper alloy ingots by vacuum arc remelter. After rolling and heat treatment, the two-inch round target was cut by wire electrical discharge machining. DC sputtering deposited cupper alloy thin films on silicon base materials and optical glasses to discuss the thin film microstructures人人干人人插人人插人人操、compositions、practical performances and optical characteristics.

中文摘要本研究以自行設(shè)計(jì)之銅基合金靶材26uuu色噜噜在线播放，在銅基材料中添加鈦鋯與鋁鋯等微量金屬亚洲国产成a人v在线观看，以真空電弧熔煉制作銅合金方錠，經(jīng)滾壓加工及熱處理后日本体内she精3汇编，以線切割機(jī)切成兩吋之圓型靶材日本大乱交，再進(jìn)行直流濺鍍沉積銅合金薄膜於矽基板和光學(xué)玻璃基板上，探討不同成分比例下之薄膜顯微結(jié)構(gòu)在线观看AV麻豆、成分組織五月丁香天天色综合、實(shí)用性能與光學(xué)特性。

Alloy membrane is used to separating hydrogen isotope,but after operating tritium,decay product 3He resorts in alloy membrane,forms helium bubble s and affects the macroscopical properties of alloy membrane.

PdY8.5Ru0.19合金是用于氫同位素分離的膜材料外国A级免费毛片，但涉氚操作后男人天堂网址在线，衰變3He會(huì)滯留在合金膜中并形成氦泡，影響其宏觀性能99精品黄色一级电影。

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