查询词典 ductility

The paper based on experiment of two Subassemblage and Prestressed concrete frames under low reversed cyclic loading, crack distribution, failure pattern, hysteresis curve, skeleton curve, displacement ductility, energy dissipation and rigidity degeneration are studied systematically.

本文通过对两榀预压装配式预应力混凝土框架在低周反复荷载作用下的试验，深入研究了预压装配式预应力混凝土框架的裂缝分布、破坏形态、滞回曲线、骨架曲线、位移延性、耗能能力、刚度退化等抗震性能。

Series of Fe3Al based alloys with high oxidation,sulphidation and erosion resistance and good combination of strength and ductility have been obtained.

目前已形成了具有不同特性的Fe3Al基合金的成分配方系列，以及可以制备各种Fe3Al型材和大型铸锭和锻坯的工艺路线及完整的工艺参数。

After the addition of carbon, the microhardness in the grain boundary is about 150 MPa higher than that in the grain. The fracture type of pure Mo is intergranular fracture, the grain boundary strength of Mo-C alloy is strengthened due to the addition of carbon and the fracture type is changed to transgranular fracture, transcrystalline fracture and a large number of cleavage planes and steps are observed on the bending fracture surface. But if the carbon content is too high, the carbide precipitation will be severe at grain boundaries and is deleterioated to the ductility of the alloy.

添加碳后，合金的晶界显微硬度比合金的晶内显微硬度高150MPa左右；纯钼的断裂方式以沿晶断裂为主，添加碳后，由于合金的晶界强度得到提高，合金的断裂方式变成以穿晶断裂为主，断口上有大量的解理面，具有明显的河流状花样和解理台阶，且塑性越好的断口，撕裂岭也越多；当添加的碳含量偏高时，在晶界处产生了大颗粒的碳化物，这种大颗粒的碳化物会降低合金的塑性。

Results of experiment and analysis show that open-web trussed steel reinforced concrete columns have relatively good behavior of ductility and energy dissipation.

试验结果表明：空腹析架式型钢混凝土框架柱具有良好的延性和耗能能力。

Lanthanum can reduce the harmfulness of tramp elements on the hot ductility of GCr15,which can react with antimony to form compound and segregate at grain boundaries.

在Gleeble-1500热模拟机上测定了残余元素锡、锑对GCr15钢热塑性的影响，以及镧对残余元素的作用。

The results show that the predeformation has little effect on the coarsening kinetics of δ'phase, but it can raise the strength and reduce the ductility of the alloys.

结果表明，预形变对δ'相的粗化动力学没有影响，但可提高合金的强度，同时使塑性降低。

Ductility enhancements were achieved in nano-structured metals through the incorporation of a bimodal grain size distribution, with micrometer-sized grains embedded inside a matrix of nano-crystalline grains, and at the same time the strength deceases so little that the nano-crystalline material is toughening well.

针对这种情况国外研究人员制备出的一类具有不同晶粒尺度分布的纳米晶材料，在强度降低有限的情况下改善了材料的塑性性能，达到了增韧的目的。

Three types of base asphalt and six SBS were used to produce SBS modified asphalt. The interaction of SBS modified asphalt was discussed in different states between the base asphalt and SBS based on their compositions. Through the traditional tests, such as penetration, soften point and ductility, and US SHRP tests, the results indicated that influences to affect the temperature susceptibility, high and low temperature performance, aging characteristics are base asphalt, SBS types and their dosages. The functions of penetration to viscosity and complex shear modulus G~* to complex dynamic shear viscosity η~* were set up, and then theviscosity-temperature susceptibility of wide temperature span and the calculation method of low temperature viscosity were obtained."Process" evaluation criterions, high grading critical temperature T_ and low grading criticaltemperature T_ , were suggested according to the high and low temperatureperformances of SBS modified asphalt. Using the experience of Repeated Creep and Recovery Test for Binders, a new high-temperature evaluation index,modification rutting factor G~*~(-9) was obtained. The results after RTFO and PAV aging indicated that traditional tests didnt differentiate base asphalt and SBS modified asphalt, but dynamic mechanics temperature spectrum and G*-5 black chart clearly reflected the influence of aging to the SBS modified asphalt. With the IR and GPC tests, the reason of aging to the SBS modified asphalt were due to asphalt phase oxygenated and SBS phase depredated.

论文选择3种油源的基质沥青和6种SBS改性剂制备改性沥青，通过分析基质沥青和SBS改性剂的组成结构特点，得出了不同状态下SBS改性沥青的SBS与基质沥青的相互作用机理；通过针入度、软化点、延度等常规试验以及美国SHRP试验，分析了基质沥青、SBS改性剂类型与剂量对SBS改性沥青的温度敏感性、高低温特性及老化特性的影响；建立了针入度-粘度、复数模量G~*-复数粘度η~*的换算关系，得出了宽温度域的粘温指数VTS和较低温度下粘度的计算方法；通过高低温性能分析提出了&过程&评价参数高温等级温度T_和低温等级温度T_；借鉴重复恢复与蠕变试验研究成果，得到了SBS改性沥青高温评价指标改进型抗车辙因子G~*~(-9)；RTFO和PAV老化后的性能试验结果表明，常规试验难以区分SBS改性沥青与基质沥青的差异，而动态力学温度谱、G~*-δ黑斑图可以反映老化作用对SBS改性沥青的影响，且通过IR试验和GPC试验得出SBS改性沥青老化是沥青相的氧化和SBS的降解共同引起的；通过不同温度下SBS改性沥青混合料的旋转压实SGC试验，根据粘度与剪变率的关系，提出用剪变率60(1／s)测试SBS改性沥青的粘温曲线，并按照0.17±0.02Pa.s和0.28±0.03Pa.s确定施工温度。

On the other hand, the decrease of the critical strain for adiabatic shear with the increase of the plate hardness easily leads to the damage of plugging, and the decrease of the ductility and toughness, which may cause the damage of discing resulting in the decrease of the ballistic penetration.

另一方面，硬度升高，导致绝热剪切临界失稳应变降低，易诱发衝塞破坏，而且塑性与韧性降低，可能导致背面盘状崩落破坏，从而使抗弹性能下降。

High tenacity and high ductility metal material embrittled at a low temperature.

高韧性、高塑性金属材料，在低温冷冻状态下产生低温脆化，这有利于金属切削加工。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失