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冷变形
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  cold deformation
Evolution of dislocation boundaries during cold deformation of microcrystalline titanium
      
The evolution of the misorientation spectrum of titanium during cold deformation via uniaxial tension was analyzed.
      
Using metals as an example, we have determined the dependences of the variation of dimensions and areas of fragments and grains on the parameters of large cold deformation.
      
On the possibility of formation of domains with {110}?001? orientation during cold deformation of commercial Fe-3% Si alloy
      
Dissolution of the Fe4N nitride in the nitrided layer of iron upon cold deformation by shear under pressure
      
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  cold working
The article discusses the effect of the shape of the channel and of the blowing of a cold working gas through the side walls on the steady-state flow of a gas along the positive column of a direct-current arc.
      
Cold working lowered the transition temperature of the h.
      
No transformation intoβ-Hg during cold working was found.
      
Cold working at 4.2 K produced a strong irreversible effect onTc.
      
A cold working steel was coated both with high temperature CVD (TiN) and moderate temperature CVD (Ti[C,N]).
      
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The change in electrical resistance of Pd-, Cu-, Ni- and Fe-base metallic glasses in tensile process and the effect of composition, cold deformation and heat treatment on the strain coefficient of resistance k, have been investigated. The results show that the resistivity increases with the increase of strain and K is positive. K of all the alloys are always less than those of pure metals; k of cold deformed state and annealed state samples are greater than that of rapidly quenched state samrte. The physical...

The change in electrical resistance of Pd-, Cu-, Ni- and Fe-base metallic glasses in tensile process and the effect of composition, cold deformation and heat treatment on the strain coefficient of resistance k, have been investigated. The results show that the resistivity increases with the increase of strain and K is positive. K of all the alloys are always less than those of pure metals; k of cold deformed state and annealed state samples are greater than that of rapidly quenched state samrte. The physical nature of K and its factors of influence on metallic glasses are discussedpl in virtue of generalized Ziman theory.

本文系统地研究了Pd-,Cu-,Ni-和Fe-基非晶态合金在拉伸过程中的电阻变化以及成分、冷变形和热处理对电阻应变系数k的影响。电阻随应变增大而升高,k为正。合金电阻应变系数总是低于纯组元。硬态试样的电阻应变系数比淬火态的高,比退火态的更高。应用推广的Ziman电阻率理论讨论了非晶态合金电阻应变系数的物理本质及其影响因素。

The Mossbauer spectra of Ni42CrTi Elinvar alloy in quenching, aged and cold-working states are measured respectively. On the basis of the spectra, the distributions of internal fields are calculated. The experimental P(H) curves spread widely and are decomposed into three Gaussian curves, which represent three preferential configurations of iron atoms. The variation in internal fields can be referred to the precipitation of γ′ phase in the alloys, which results in the variation in the neighbouring environment...

The Mossbauer spectra of Ni42CrTi Elinvar alloy in quenching, aged and cold-working states are measured respectively. On the basis of the spectra, the distributions of internal fields are calculated. The experimental P(H) curves spread widely and are decomposed into three Gaussian curves, which represent three preferential configurations of iron atoms. The variation in internal fields can be referred to the precipitation of γ′ phase in the alloys, which results in the variation in the neighbouring environment of iron atoms. Comparing the relative areas under the probability peaks at different internal fields in P(H) curves, the relative amounts of γ phases in different states of alloys can be deduced. In addition, the intensity ratio of the components of Mossbauer spectrum indicates the extent of preferential orientation of magnetic moments.

测量了淬火、回火和冷变形状态下Ni42CrTi埃林瓦合金的穆斯堡尔谱,并由谱计算了内场分布曲线P(H).实验所得的P(H)曲线的分布是很宽的,并可分解为三个高斯分布的曲线,代表了铁原子的三种不同的择优组态.内场的变化可归因于合金中γ’相的沉淀,后者导致了铁原子近邻环境的变化.比较P(H)曲线上不同内场处几率峰下的相对面积,可以得出合金在不同状态下的γ’相的相对量.此外,穆斯堡尔谱的组分的强度比表明了磁矩的择优取向的程度.

Permeability,diffusivity and solubility of hydrogen in different cold deformednickel have been measured by gaseous permeation technique over the temperature range of 140to 400℃.The effects of cold working on hydrogen permeation and diffusion have been investi-gated.The results indicated that permeability and diffusivity of hydrogen in pure nickel over theexperimental temperature range follow Arrhenius equations and hydrogen permeation and dif-fusion behaviour are not obviously influenced by cold-work of pure...

Permeability,diffusivity and solubility of hydrogen in different cold deformednickel have been measured by gaseous permeation technique over the temperature range of 140to 400℃.The effects of cold working on hydrogen permeation and diffusion have been investi-gated.The results indicated that permeability and diffusivity of hydrogen in pure nickel over theexperimental temperature range follow Arrhenius equations and hydrogen permeation and dif-fusion behaviour are not obviously influenced by cold-work of pure nickel.

本工作采用超高真空气相氢渗透技术,在140—400℃温度范围内,测定了氢在纯 Ni(不同冷变形量)中的渗透率、扩散系数和溶解度常数,研究了冷加工对氢渗透和扩散行为的影响。结果指出,在实验温度范围内,氢在纯 Ni 中的渗透率和扩散系数均遵循 Arrhenius 方程,纯 Ni 的冷加工对氢渗透和扩散行为没有明显影响。

 
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