合金的基体

He experimental assess method of alloy fluid is put forward used the length of Archimedes spiral line through indirect squeezing in squeeze casting.

提出了利用间接反挤阿基米德螺旋线长度来评价挤压铸造条件下合金熔体充型能力的实验评定方法。

The atomic structure model of phase Zr2Ni containing icosahedron cluster in Zr-based amorphous alloys were constructed by computer programming.

用计算机编程构造了Zr基非晶合金包含二十面体原子团簇的Zr2Ni晶体相。

The research results show for low Sn concentrations, for example 1wt%Sn with respect to Ni, the Ni/Sn surface alloy is energetically preferred. We have also used XPS to characterize the catalysts. The quantified Sn and Ni XP spectra for Ni/Sn/SLT catalysts show that Sn preferentially segregates to the surface of the Ni/Sn alloy. We demonstrate that supported Ni/Sn alloy catalyst provides significantly higher reforming reactivity and resistance to deactivation via carbon deposition than supported monometallic Ni catalyst both in steam reforming of CH4 and CO_2 dry reforming.

本文以SLT为支撑体，利用Sn对传统的Ni基催化剂进行表面合金化处理，成功制备了Ni/Sn表面合金重整催化剂，将该催化剂用于甲烷和丙烷的CO_2重整和水蒸汽重整反应，研究结果表明，在Sn浓度很低的情况下，例如1wt%Sn含量，从能量角度看更易于形成表面合金，XPS数据也显示Sn更易于富集在Ni/Sn合金催化剂表面。

The dislocation configuration in a single crystal Ni base alloy with (100) plane parallel to stress axis during primary creep has been investigated by TEM.

利用TEM研究了单晶镍基合金平行于应力轴的（100）晶面拉伸蠕变初期的位错组态，表明：形变特征是位错在γ相八面体滑移系中运动。

Moreover, the hot compressive deformation behavior of the RS/PM AZ91 magnesium alloy and AZ91 alloy matrix composite were also investigated, the conclusions are drawn as follows:1. The processing parameters of the atomization-twin rolls quenching technology were optimized as follows: the diameter of the nozzle 1mm, the wheel velocity 25m/s, the pressure of atomization gas 0.3MPa and Ar gas for melt injection 0.1MPa. The RS AZ91 alloy flakes exhibited fine and uniform microstructures. When the flakes were extruded at 673K, extruded velocity of 0.1mm/min and extrusion ratio of 25:1,the magnesium alloy rods with clean surface, uniform dimension and excellent mechanical properties were obtained.2. The RS AZ91 magnesium alloy powders prepared by atomization-twin rolls quenched technology exhibited fine equiaxed grains with the grain size of 1-3μm, the phase constituent included supersaturate solid solution phaseα-Mg and miner fineβ-Mg_(17)Al_(12) phase. The as-extruded materials also exhibited equiaxed grains with the size of 5-7μm and a large number of fineβ-Al_(12)Mg_(17) and fewer AlMg_2Zn phases were detected in the alloy.

本文还研究了快速凝固/粉末冶金AZ91镁合金热压缩变形流变应力行为，快速凝固/粉末冶金法原位生成Mg_2Si增强AZ91镁基复合材料，经过系统的研究，获得如下结论：1、雾化-双辊急冷法在下列工艺参数组合下：双辊线速度25m/s；喷嘴直径1mm；熔体压射压力0.1MPa；雾化气体压力0.3MPa。，可获得宏观尺寸细小、微观组织均匀细小、综合性能优良的的快速凝固AZ91镁合金细碎箔带，快速凝固箔带在挤压温度为673K、挤压速度为0.1mm/min，挤压比为25：1时，可获得的外表光洁、尺寸均匀、组织性能优异的镁合金棒材。2、雾化-双辊急冷法制备的AZ91镁合金粉末态为细小等轴晶组织，晶粒尺寸1-3μm，组织为α-Mg过饱和固溶体和微量的细小β-Mg_(17)Al_(12)相组成；粉末挤压棒材为等轴晶组织，晶粒尺寸5-7μm，组织中含有大量细小的β-Al_(12)Mg_(17)以及AlMg_2Zn析出相，室温力学性能，抗拉强度383MPa，屈服强度275MPa，断后伸长率7.5%。

The results showed that adding Sc to the alloy could cause the transformation of phase structure and the composition of the pre-separation phase in the transitional region of the quintary alloy.

6Al10Ti5五元锆基块体非晶态合金在非晶态-晶态过渡区中先析相的相结构及组织形态。

The results show that all alloys are mainly composed of a C14-type Laves phase with hexagonal structure and a V-based solid solution phase with b.

结果表明：所有合金均主要由六方结构的C14型Laves相和体心立方结构的钒基固溶体相所组成，其中钒基固溶体相以树枝晶的形式分布于C14型Laves相之中。

After heat treatment, borides of samples made of sand mould were changed little, otherwise, borides of samples made of metal mould were changed to granulation shape and the impact toughness was increased by 60%..

高硼铁基合金熔体在金属模和砂模不同凝固条件时，奥氏体初晶晶粒随冷却速度增加而减小，硼化物形态发生较大变化；热处理后，砂模铸造的试样，硼化物形态变化不大，而金属模铸造的试样硼化物粒化，其冲击韧度提高了60％。

Results IPS Empress2 was same as IPS Empress1 in color and shape of prostheses,margin sealing and second caries of a butments,IPS Empress2 was better than IPS Empress1 in fracture of prostheses sig nificantly (P＜0.05),IPS Empress2 all-ceramic bridges was better than po rcelain bridges with gold alloy in color of prostheses (P＜0.05),it was same as porcelain bridges with gold alloy in fracture of prostheses and shape of prostheses,margin sealing second caries of abutments.

结果 IPS E mpress2全瓷冠的颜色、形态、基牙龋患率、修复体的边缘密合度、边缘着色与IPS Empress 1无统计学差异，在修复体折断率方面IPS Empress2低于IPS Empress1(P＜0.05)， IP S Empress2全瓷桥在颜色方面好于金合金基底烤瓷桥(P＜0.05)，其他方面无统计学差异。

Now,three kinds of alloys were studied and applied:Cr-former alloy,Ni-based alloy and the ferritic steel.

目前研究和使用的合金有三种：Cr基合金、Ni基合金和铁素体不锈钢。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了