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   速度冷却 在 金属学及金属工艺 分类中 的翻译结果: 查询用时:0.616秒
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速度冷却
相关语句
  cooling rate
    By measure the different cooling rate's distortion, the carburization layer's depth and the microhardness, and with temperature field simulation, residual stress measuring, we have studied the GDL-1 steel's carburization and quenching distortion characteristics and the distortion rule.
    实验中将GDL-1钢试样渗碳,渗碳后分不同的冷却速度冷却到室温,测量不同冷却速度下的变形量、渗层深度及显微硬度,并结合温度场模拟和残余应力测定等方法研究了GDL-1的渗碳淬火变形特性和规律。
短句来源
    It has been found that :the amorphous structures are formed with cooling rate 3.38 ×10 13 K/s 、 3.38 ×10 12 K/s ;
    发现 :以 3.38× 10 13 、3.38× 10 12 K/s的速度冷却 ,得到非晶态结构 ;
短句来源
    While, the crystal structures are formed with cooling rate 2.01 ×10 11 K/s .
    以 2 .0 1× 10 11K/s的速度冷却 ,发生明显晶化 ,结晶转变温度约为 133K。
短句来源
    The amorphous structures are formed with cooling rate of 1.69×10 12 ? K/s;
    以 1.6 9× 10 12 K/s的速度冷却时 ,得到非晶态结构 ;
短句来源
    while, the crystal structures are formed with cooling rate of 1.01×10 11 ? K/s. The crystallization temperature is 144?
    以1.0 1× 10 11K/s的速度冷却时 ,发生晶化 ,结晶转变温度约为 14 4K。
短句来源
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  “速度冷却”译为未确定词的双语例句
    The impact strength of S15A steel austenitized at the same temperature but cooled at different rate was determined.
    测定了S15A钢经同一温度奥氏体化不同速度冷却处理后的冲击韧性。
短句来源
    A microstructure consisted of a NiAl martensite as a matrix, γ'-Ni3Al distributed along the grain boundaries of the matrix and with a network appearance, and a few retained β-NiAl was resulted from annealing at 1523K for 2h in a rapidly solidified Ni-34.6a. %Al ribbon. The annealed alloy has a good bend ductility (7.6% ).
    快速凝固Ni-34.6a%Al薄带经1523K退火2h并以较快速度冷却后形成以NiAl马氏体为基体、γ’-Ni3Al沿晶界网状分布和少量残余β-NiAl的组织通火后,室温弯曲延性(7.6%)良好
短句来源
    The microstructure of alloy Ti-3Al-10Nb-3V-1Mo after heating at 1170℃ for 1 h and cooling to room temperature at different rates was investigated by TEM. The result showed that W. Q.
    用透射电镜研究了Ti3Al10Nb3V1Mo合金在1170℃加热1h,以不同速度冷却后的显微组织结构。
短句来源
    The austenization temperature of specimens was 1 000 , 2 min and followed cooling at 10 /s to deformation temperature. The deformation temperature range of A(e3) (840 )-A(r3) (780 ) and the reduction range of 30%-50% were adopted.
    实验方案为:1000℃保温2min,以10℃/s的速度冷却到变形温度[Ae3(840℃)至Ar3(780℃)],变形量为30%~50%,变形后立即水淬。
短句来源
    Hot tearing, scab, breakdown and leakage can be avoided, when casting velocity, cooling water capacity, cooling distance, casting mould temperature and S+L two phase range are available, consequently, the Cu-Cr alloy which has excellent surface quality can be cast.
    通过控制好拉铸速度,冷却水量,冷却距离,铸型温度等工艺参数使固+液两相区在尽可能小的范围和最理想的位置可以消除表面热裂纹、豆状突起,防止拉断和拉漏,从而获得良好表面质量的Cu-Cr合金棒材。
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  cooling rate
The increase in the cooling rate can restrain the precipitation of the Ga-rich phase in the ribbon.
      
With a given law p=f(T), such parameters are the temperature Ts at the dew point and the mean cooling rate
      
The convective heat flux is mainly determined by the Rayleigh number and depends only slightly on the layer heating (cooling) rate.
      
Dependence of the Fluctuation Free Volume of Amorphous Substances on the Cooling Rate
      
The dependence of the fraction fg of fluctuation free volume (frozen at the glass transition temperature) on the cooling rate is determined using the Bartenev equation for the dependence of the glass transition temperature on the cooling rate.
      
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Borided layers on the surface of Armco iron and eutectoid carbon Steel were eutectified in furnace and then scanned continuously with laser beam of high power densities. The laser melted metal were cooled and then solidified with extra--ordinary speeds by the heat extraction action of the cold substrale. It was found that the eutectic structures are composed of α-Fe+Fe2B phases in the Fe-B alloy layer and of a -Fe + Fe3(C, B) phases in the Fe-C-B layer. Fe2B is in the square rod-shaped form and Fe3( C , B )...

Borided layers on the surface of Armco iron and eutectoid carbon Steel were eutectified in furnace and then scanned continuously with laser beam of high power densities. The laser melted metal were cooled and then solidified with extra--ordinary speeds by the heat extraction action of the cold substrale. It was found that the eutectic structures are composed of α-Fe+Fe2B phases in the Fe-B alloy layer and of a -Fe + Fe3(C, B) phases in the Fe-C-B layer. Fe2B is in the square rod-shaped form and Fe3( C , B ) in the lamellar form respectively after furnace treatment. The phase constitution and the morphologies are not altered, but the inter-rod and interlamellar spacings are reduced by 40 and 100 times respectively after the laser melt quenching. The hardness of eutectic structures are thus greatly enhanced and the hardness-dimension relationship for each alloy system obeys the Hall-Petch equation.

工业纯铁与共析碳钢表面渗硼层先在炉中处理,以获得共晶组织,然后以高能密度激光束扫描;被激光熔化的金属在冷基底的吸热作用下,以非常高的速度冷却并凝固。实验表明,炉内处理后Fe-B合金层的共晶由α-Fe+Fe_2B二相组成,FeC-B合金层的共晶由α-Fe+Fe_3(C、B)二相组成;共晶中Fe_2B为方棒状和Fe_3(C、B)为片层状。激光熔化激冷后,共晶中的相组成及形貌无改变,但棒间距和片间距相应减小了40及100倍。共晶组织的硬度大幅度增高,每个合金系的共晶组织的硬度与尺寸的关系服从Hall-Petch公式。

The influence of the different preheat treatment on the distribu- tion, size and quantity of carbonitride particles and on the process of the austenite grain growth in the steel 42CrMo, which was micro- alloyed with the trace of V, Ti and Nb has been studied by the optical and electron microscope. It is found that only after the high tempe- rature austenization above 1100℃, can the carbonitride particles of AI, V, Ti, Nb be sufficiently dissolved into austenite. After high tempe- rature austenization) rapid...

The influence of the different preheat treatment on the distribu- tion, size and quantity of carbonitride particles and on the process of the austenite grain growth in the steel 42CrMo, which was micro- alloyed with the trace of V, Ti and Nb has been studied by the optical and electron microscope. It is found that only after the high tempe- rature austenization above 1100℃, can the carbonitride particles of AI, V, Ti, Nb be sufficiently dissolved into austenite. After high tempe- rature austenization) rapid cooling is required to ensure that the car- bonitride particles precipitate from austenite or from martensite at tempering at the low temperature dispersively and homogeneously. In this case, the trace of A1, V, Ti, Nb can play an efficient role of retar: ing the austenite grain growth. It is also found that the tough- ness of the steel would not decline by the present of brittle carboni- tride particles, on the contrary, it becomes a little better owing to their refining the grain remarkably.

用一级碳膜复型及光学显微镜研究了各种规程的予处理对加有微量V、Ti、Nb等元素的42CrMo钢中的碳氮化物颗粒的数量、大小、分布及其对奥氏体本质晶粒度的影响规律。得出,必须探用1100℃以上的高温固溶处理,才能保证Al、V、Ti、Nb等元素所形成的碳氮化物充分溶入奥氏体中。同溶处理后则必须以足够快的速度冷却,使碳氮化物颗粒在较低的温度自奥氏体或在回火时自马氏体中以弥散状态析出,方能使微量的Al、V、Ti、Nb、等元素充分地发挥其细化作用。此外,试验所用钢料的冲击韧性并未因脆性碳氮化物的存在而有所下降。反而因其显著的细化晶粒的作用而略有改善。

The impact strength of S15A steel austenitized at the same temperature but cooled at different rate was determined. The specimens with Widmanstatten structure have higher impact strength and lower ductile-brittle transition temperature than those with equiaxial granular ferrite structure. The feature of Widmanstatten structure, the microstructure of acicular ferrite, impact fracture surface and the initiation, propagation and restraint of crack etc were investigated in this steel by means of optical microscope,...

The impact strength of S15A steel austenitized at the same temperature but cooled at different rate was determined. The specimens with Widmanstatten structure have higher impact strength and lower ductile-brittle transition temperature than those with equiaxial granular ferrite structure. The feature of Widmanstatten structure, the microstructure of acicular ferrite, impact fracture surface and the initiation, propagation and restraint of crack etc were investigated in this steel by means of optical microscope, TEM and SEM, Leitz-Texture-Analyse-System. The causes of increasing mechanical properties of the steel owing to the presence of Widmanstatten structure were also analysed.

测定了S15A钢经同一温度奥氏体化不同速度冷却处理后的冲击韧性。有魏氏组织的试样较呈等轴铁素体的试样有更高的冲击韧性和更低的韧脆转变温度。 用光学显微镜,透射电子显微镜,扫描电子显微镜,图象分析仪等手段研究了S15A钢魏氏组织的形貌、针状铁素体的精细结构、冲击断口形貌、裂纹的萌生及扩展和受阻。 分析了魏氏组织提高低碳钢机械性能的原因。

 
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