The causes for its formation can be attributed to the periodic oscillation of growth rate in the vicinity of absolute stability velocity.

Mn二元合金欧美人性黄片视频直播间，鎳基合金(Ni-12.9W-7.2Cr-5.2Co-3.6Al-1.4Ti)和1Cr18Ni9Ti不銹鋼三種材料在激光快速凝固下的組織形成與轉(zhuǎn)化規(guī)律www.99riav.m3u8，得到了如下主要結(jié)論： 191艹在线视频网。

Experimentally determined critical growth rate for the occurrence of banded structure is very close to the absolute stability velocity predicted by M-S theory.

首次在Cu-26.6％Mn合金的激光快速凝固實驗中觀察到了細胞晶→帶狀結(jié)構(gòu)→無亞結(jié)構(gòu)的界面形態(tài)轉(zhuǎn)變人人看人人妻人人干人人操。

The supporting materials were used in manufacturing parts with Shape Deposition Manufacturing Technology. The supporting materials should be of rapidly concretionary so as to rapidly prototype and manufacture ceramic parts.

采用形狀沉積成型技術(shù)制造零件時需要支撐材料，此支撐材料應具有快速凝固的特性国产中文字幕网，以達到陶瓷制件快速成型的目的狼友线观看免费观看。

The investigation on rapidly solidified powders produced by ultrasonic gas atomization showed that the two kinds of dispersoids presented in Al-Cu-Fe and Al-Fe-V-Si alloys have simultaneously reformed in the new alloy, there is not any other dispersoid in the powders below 61μm.

對超音速氣體霧化快速凝固的上述合金粉末進行的研究表明，新的合金中同時形成原來兩個合金系中的析出相200avcom；在61 μm的粉末中久久精品视频96，沒有發(fā)現(xiàn)第三種析出相。

Haemophilia is a genetic condition where the blood does not clot as quickly as normal due to a deficiency in certain proteins.

血友病是一種遺傳疾病日韩,欧美在线不卡片，由于某種蛋白的缺乏A女人黄色网站，血液不能正常的快速凝固。

By eliminating excessive flow, Jeltrate, Jeltrate Dustless and Jeltrate Plus allow your patients a level of comfort that cannot be found in other alginate impression materials

它同時具有胡椒盒薄荷的口味欧美黑人巨大激情视频，它能與其他任何通用的石膏材料相容一区,二区,三区乱淫视频，具有快速凝固和常規(guī)凝固，粉末狀欧美三级自拍视频。

The formation of secondary phase in the non-equilibrium peritectic reaction was observed by precise transmission electron microscopy analysis. The microstructural evolution and phase selection regularities under different solidification velocities were constructed from the laser resolidification experiments. A new phenomenon involving two-phase coupled growth was firstly detected in the rapidly solidified Ti-Al peritectic alloy. The Ti-45Al-2Cr-2Nb alloy with fully lamellar structure ( a 2+ g ) was taken as an object to investigate the possible preparation of bulky metastable g phase materials based on both adjusting the competing nucleation relation and changing the growth kinetics condition.

首先通過過冷合金微觀組織分析界定了各包晶合金熔體中各競爭相以初生相出現(xiàn)的過冷度區(qū)間欧美一级精品视频；結(jié)合高溫區(qū)的相圖計算，從各相形核孕育時間角度揭示了過冷熔體中亞穩(wěn)相與穩(wěn)定相的競爭形核關(guān)系在线二区三区国产免费看污；通過精細微觀組織分析，闡明了遠離平衡時包晶反應中次生相的形成機理大桥未久黄色网站；在激光重凝快速凝固實驗中建立了不同凝固速度下合金的組織與相形成規(guī)律自拍偷自拍亚洲精品偷一，并對包晶合金中兩相共生生長行為進行了深入分析；最后選取初生相為 a 的全層片 Ti-45Al-2Cr-2Nb 合金久久精品国产72精品，從調(diào)整各相競爭形核關(guān)系和改變晶體生長動力學條件兩個方面探索了塊狀亞穩(wěn) g 相材料的制備和控制欧美一级AAAAA特黄片免费看。

The directional solidification under negative temperature gradient with unstrained cooling and superrefined directional microstructure are observed.

并在△T〓≤△T＜△T〓過冷度區(qū)間完成了無外界冷速約束的負溫度梯度下的定向凝固，獲得了快速凝固條件下的超細定向組織丝袜美女诱惑久久国产。

Main results are listed as below: 1. In rapid solidification, when the cooling rate is over some critical value, the solidification system will become unstable in the sense of the nonequilibrium thermodynamics, a uncontinuous steady state jump phenomenon will occur, and this uncontinuous steady state jump can be understood as the glass transition.

主要得到了如下結(jié)果：(1)通過對快速凝固過程的動力學及熱力學的分析日韩自拍中文在线视频观看，提出了非晶轉(zhuǎn)變的分枝理論模型，結(jié)果表明www.94se.com，對一合金熔體黄网址免费，當冷卻速度大于某一臨界值時，凝固體系會出現(xiàn)非平衡熱力學意義上的失穩(wěn)而出現(xiàn)多定態(tài)分枝現(xiàn)象自拍另类图区亚洲制服，這一多定態(tài)現(xiàn)象可以被理解為非晶轉(zhuǎn)變www.krttz.com。

The microsturcture characteristics of M2 cast-strip were studied with such experimental methods as metallographic analysis, SEM, XRD and TEM[0]. The effect of sub-rapid solidification on the size, type and distribution of eutectic carbides in M2 cast-strip was analyzed. The effect of heat treatment temperature and its holding time on the eutectic carbides in M2 cast-strip was explored. The eveolution of metastable phase of M2C eutectic carbide during the heat treatment period and the decomposition dynamics concerned were researched. The M2 cast-strips were rolled into thin strips and the effect of deformation ratio on carbides in M2 cast-strip was examined. Then these thin strips were comparied with those that were produced by conventional technology on carbide, hardness, red-hardness and bend strength. At last the rolled M2 cast-strips were made into saw blades and their cutting performance was experimented on in tools factories and then compared with that of similar products produced by conventional technology.

采用常規(guī)金相亚洲日本无吗在线视频、掃描電鏡、X射線衍射及透射電鏡等實驗研究了M2高速鋼鑄帶的凝固組織特征A片视频免费观看的网址，分析了亞快速凝固對鑄帶中的共晶碳化物的析出類型和尺寸以及分布的影響欧美日韩亚洲综合视频；探索了后續(xù)熱處理溫度和保溫時間對鑄帶碳化物組織的影響規(guī)律，分析了鑄帶中的亞穩(wěn)相M2C共晶碳化物在熱處理過程中的分解情況以及分解動力學免费观看黄色国产一级视频；將鑄帶熱軋成薄帶无码专区免费大全在线观看，研究了壓下率對鑄帶碳化物組織的影響，并將熱軋薄帶與常規(guī)工藝生產(chǎn)的相同規(guī)格的M2高速鋼薄帶在碳化物組織又粗又硬又黄又长又爽的免费视频、硬度與紅硬性以及抗彎性能等方面進行了對比成人免费网站；將熱軋薄帶加工成機用鋸條后在工具廠進行了鋸切性能試驗，并與常規(guī)工藝生產(chǎn)的同類產(chǎn)品進行了使用性能對比欧美a在线播。