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mechanical alloying
相关语句
  机械合金化
     INVESTIGATION OF NiAL ALLOY AND ITS COMPOSITES BY MECHANICAL ALLOYING
     NiAl合金及其复合材料的机械合金化研究
短句来源
     Structural and Magnetic Properties of Supersolibility Nanocrystalline Fe-C Systems by Mechanical Alloying Method
     机械合金化纳米晶Fe-C过饱和固溶体系的结构和磁性能研究
短句来源
     A STUDY ON MECHANICAL ALLOYING OF AN OXIDE DISPERSION STRENGTHENED NICKEL-BASE SUPERALLOY
     氧化物弥散强化镍基高温合金的机械合金化研究
短句来源
     DISPERSION-STRENGTHENING AL-C ALLOYS MADE BY MECHANICAL ALLOYING
     用机械合金化工艺制造弥散强化Al-C合金
短句来源
     Improved ODS Fe-Cr-Al alloys with alloying element additions,prepared by mechanical alloying
     合金元素提高机械合金化弥散强化Fe-Cr-Al合金性能的研究
短句来源
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  机械合金
     Hydrogen Storage Properties of(Mg_2Ni)_(100-x)Ag_x Powder Prepared by Mechanical Alloying
     以机械合金法制备(Mg_2Ni)_(100-x)Ag_x粉体与其储氢性质之研究
     Bi_2Te_3 and Bi_0.5Sb_1.5Te_3 thermoelectric materials were prepared by mechanical alloying.
     用机械合金法制备了Bi2 Te3和Bi0 .5Sb1 .5Te3两种热电材料。
短句来源
     Al—V—Fe nanocrystal alloy powder was prepared by mechanical alloying, which consisted of nanocrystal Al and amorphous.
     采用机械合金方法制备Al—V—Fe纳米晶合金粉末,合金粉末由纳米尺度的铝晶粒加非晶颗粒组成。
短句来源
     Development of Preparation of Hydrogen Storage Materials by Mechanical Alloying
     机械合金法制备贮氢材料进展
短句来源
     Electrochemical properties of Sn-Ni alloy powder prepared by mechanical alloying were examined as negative electrode for lithium-ion batteries.
     以机械合金法制备了Sn Ni合金粉,并对合金电极的电化学性能进行了研究。
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  “mechanical alloying”译为未确定词的双语例句
     FORMATION OF AMORPHOUS Ni-Ti ALLOY BY MECHANICAL ALLOYING
     FORMATION OF AMORPHOUS Ni-Ti ALLOY BY MECHANICAL ALLOYING
短句来源
     PREPARATION OF AMORPHOUS Mo_5Si_3 BY MECHANICAL ALLOYING AND THE CRYSTALLIZATION
     PREPARATION OF AMORPHOUS Mo_5Si_3 BY MECHANICAL ALLOYING AND THE CRYSTALLIZATION
短句来源
     SYNTHESIS OF NANO-METER TiAl INTERMETALLIC COMPOUND THROUGH MECHANICAL ALLOYING
     SYNTHESIS OF NANO-METER TiAl INTERMETALLIC COMPOUND THROUGH MECHANICAL ALLOYING
短句来源
     EFFECT OF MILLING INTENSITY ON STRUCTURAL CHANGES OF MIXED Al-Fe-Ni POWDERS IN MECHANICAL ALLOYING PROCESS
     EFFECT OF MILLING INTENSITY ON STRUCTURAL CHANGES OF MIXED Al-Fe-Ni POWDERS IN MECHANICAL ALLOYING PROCESS
短句来源
     Metastable Structure of Soft Magnetic Fe_(77-x)Ni_xCu_1Nb_2P_(14)B_6 Nanometer Polycrystals Induced by Mechanical Alloying
     纳米晶Fe_(77-x)Ni_xCu_1Nb_2P_(14)B_6软磁材料的亚稳结构
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  mechanical alloying
Synthesis of Fe-substituted CoSb3-based skutterudite Co4-xFexSb12 by mechanical alloying-hot pressing-annealing
      
Mechanical alloying and preparation of Fesubstituted CoSb3-based skutterudite Co4-xFexSb12 (x?1) were studied.
      
All the compositions showed similar kinetics in mechanical alloying, where the skutterudite phase was kinetically more favorable than CoSb2 phase initially.
      
A single phase skutterudite structure could not be obtained via mechanical alloying.
      
Kinetics of the Initial Stage of Mechanical Alloying in the Fe(80)Zr(20) System
      
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This paper refers to a study on the process and principle of mechanical alloying of an ODS nickel-base superalloy. A satisfactory results have been received by the process method using Cr-Ni-Al-Ti-Zr-B masteralloy in place of the current complex methods using various master alloys for mechanical alloying and an uniform dispersion of precipitated particles γ and Y2O3 throughout the resultant structure has been finally obtained. Mechanical alloying process is a high energy dry milling technique...

This paper refers to a study on the process and principle of mechanical alloying of an ODS nickel-base superalloy. A satisfactory results have been received by the process method using Cr-Ni-Al-Ti-Zr-B masteralloy in place of the current complex methods using various master alloys for mechanical alloying and an uniform dispersion of precipitated particles γ and Y2O3 throughout the resultant structure has been finally obtained. Mechanical alloying process is a high energy dry milling technique of various raw powders in a special high intensity grinding ball charge. The result of this "ultra-blending" technique is a "mechanical solid solution", the constituents of which are unresolvable except using electron microscopy. Composition segregation still exists especially in microareas of "mechanical solid solution", which can be eliminated by improving the mechanical alloying process, hot extrusion and heat treatment at high temperature. The technical parameters of mechanical alloying in alloy studied with less raw metal powders were also analyzed and discussed.

本文对一种氧化物弥散强化镍基高温合金的机械合金化工艺、过程及原理进行了研究。研究表明,用Cr-Ni-Al-Ti-Zr-B中间合金来代替现行的、采用多种中间合金的选配方案,可以同样获得机械合金化的效果,并能最终实现γ′沉淀相及Y_2O_3弥散相在同一合金中的均匀分布。机械合金化是在保护气氛下将各种原始粉末在高能球磨机中反复冷焊-破碎过程,以获得含有弥散质点的机械固溶体粉末。X光和扫描电镜分析表明,在“机械固溶体”中各种元素已基本合金化,同时也存在一定的微区成分偏离,但可以通过改进合金化工艺及热挤压和热处理来消除。本文也对影响机械合金化的因素进行了分析。

Studies were made of the mechanical alloying of an oxide dispersion strengthened majority γ'-phase Ni-base superalloy by analyses of SEM and X-rays. By a high energy ball milling technique, a mechanical solid-solution may be formed and the mechanical alloying may be realized from various raw metal powders, The CrNi-based masteralloy and elements such as W, Mo, Ta, etc. in the raw metal powders were continually solid-soluble into Ni matrix and the lattice parameter of Ni-base solid-solution...

Studies were made of the mechanical alloying of an oxide dispersion strengthened majority γ'-phase Ni-base superalloy by analyses of SEM and X-rays. By a high energy ball milling technique, a mechanical solid-solution may be formed and the mechanical alloying may be realized from various raw metal powders, The CrNi-based masteralloy and elements such as W, Mo, Ta, etc. in the raw metal powders were continually solid-soluble into Ni matrix and the lattice parameter of Ni-base solid-solution was increased with processing time. Simultaneously, nearly random dispersion of the ultraflne oxide particles was obtained in the metal matrix. Although the micro-area compositions of the mechanical solid-solution is segregated, yet it may be improved by certain effective steps. The technical parameters of the mechanical alloying in aUoy studied were also analyzed and discussed.

本文用扫描电镜和X射线对一种复杂的弥散强化Ni基高温合金的机械合金化进行了研究。实验表明,采用高能球磨的方法可以使原料中的各种金属粉末间形成机械固溶体,实现合金化。在球磨过程中,原料中的Cr-Ni基母合金以及W,Mo,Ta等元素不断向Ni基体中周溶,使Ni基固溶体γ_(Ni)的点阵参数逐渐增大。同时,超细氧化物粒子在基体中也逐步达到理想的分布状态。这种机械固溶体虽存在一定的微区成分偏离,但可以通过某些有效措施使之显著减小。本文对机械合金化工艺参数也进行了分析和讨论。

Dispersion-strengthening Al-C alloys have been prepared by mechanical alloying technology. Its technological process was as follows: high energy milling of pure aluminium powder with carbon black or organic agents, cold isostatic compacting of the milled powder at 2—2.5 t/cm~2, packing the green compacts with pure aluminium sheet without scaling, heating the compacts to 550-600℃ in nitrogen atmosphere for 1 hr., and final hot extrusion consolidation to obtain extruded bars of diameter 13mm with reduction...

Dispersion-strengthening Al-C alloys have been prepared by mechanical alloying technology. Its technological process was as follows: high energy milling of pure aluminium powder with carbon black or organic agents, cold isostatic compacting of the milled powder at 2—2.5 t/cm~2, packing the green compacts with pure aluminium sheet without scaling, heating the compacts to 550-600℃ in nitrogen atmosphere for 1 hr., and final hot extrusion consolidation to obtain extruded bars of diameter 13mm with reduction ratio of 26:1. In the present work, two methods of addition of carbon were used and compared: physical carbon method, in which carbon black was adoped directly; chemical carbon method, in which carbon was created through the decomposition of organic agents, such as stearic acid or methanol during milling or subsequent heat treatment. The experiment results showed that both the methods of carbon addition could achieve excellent mechanical properties at normal or elevated temperature, and the strength levels could reach or surpass those of coventionally produced SAP aluminium alloys. The tensile properties of the extruded bar with chemical 1.23 w.t% carbon at room temperature were σ_b 42—43 kg/mm~2(412—422 MN/m~2), δ 5—8%, ψ 18—21%, and that with physical 3wt.%carbon, σ_b 37—39 kg/mm~2 (363—382MN/m~2), σ 8—10%, ψ13—17%. It is evident that the effect of chemical carbon on mechanical properties is considerably better than that of physical carbon, which might be contributed to a more fine and more uniform distribution of dispersoids. But the addition of physical carbon is beneficial to the safety in operating of the milled powder, and the elemental composition can be accurately controlled. The technology of powder forging was also described briefly. In order to reduce the cold work hardening of milled powder and create in-situ Al_2O_3 and Al_4C_3 dispersoids, the milled powder was annealed in nitrogen atmo- sphere at 550—600℃ for 1 hr., and then the softened powder was die pressed into preforms of 9.2mm (width)×67.9mm(length) at 3—3.5t/cm~2, and finally the preforms were heated in dissociated ammonia at 600℃ and forged in a 60t frictional press to obtain billets of 12.6mm×70.2mm. The forging products, especially alloy with the addition of chemical carbon, possess good mechanical properties except low ductility, for example, the alloy containing chemical 0.99 wt.% carbon was σ_b 35—37kg/mm~2 (343—363MN/m~2), the elevated temparature tensile strength at 300 and 400℃ was 26—27kg/mm~2(255—265MN/m~2) and 19—20 kg/mm~2(186—196MN/m~2) respectively.

高能球磨纯铝粉和碳,然后把处理好的粉末热挤压密实,制得了弥散强化Al-C合金。本研究工作采用并比较了两种添加碳的方法——物理碳法和化学碳法。结果表明,两种方法都能得到很好的室温和高温性能,而且强度水平达到和超过SAP铝合金。化学碳法对性能的影响明显地优于物理碳法,但是添加物理碳对合金粉末的安全操作是有利的,同时组份可以得到精确的控制。本文简要地叙述了粉末锻造工艺,除塑性差外锻造制品的其他机械性能也是良好的,特别是对添加化学碳的合金。

 
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