查询词典 hardening

Its comprehensive coverage focuses on nitriding techniques for steel hardening.

它的广泛报导集中在用与钢硬化的渗氮技术为。

Based on the experimental results and analysis, new contributions given in this paper is as follows:(1) the new approximate formula developed in ref [7] for △ε of continuous and noncontinuous strain hardening materials from tensile properties under various R.

实验与计算结果及分析讨论表明：用新提出的Δε模型和近似公式，可以估算不同应力比条件下连续应变硬化和非连续应变硬化材料切口根部的Δε，但是，超载作用后，Δε应近似按弹性应力循环计算；首次给出了铝合金板材和低合金高强度钢FCI超载效应的定量表达式。

Its work-hardening may be attributed to a change from nonequal strengthening state to strength-ratio-equal state A summarized plot for its deformation behaviour during cold-rolling is also given to understand rather easily the relative variation of the structure and properties of each phase in the whole process.

文中提出了冷轧时形变行为的综合图，能够清楚地描述双相20钢中两相组织及性能相对变化的全过程。

In the last two decades, lots of experimental and theoretic research on the hardening behavior and flow characteristics of metallic materials under nonproportional cyclic loading, and ratcheting for metallic materials has been done.

近年来，国内外不少学者对材料非比例应变循环加载下的材料循环附加硬化和流动特性进行了深入的研究，也对材料在应力循环下的棘轮行为进行了实验研究。

Maximum shear stress may be transfered into maximum shear strain by simple cyclic constitutive relation for low-cycle fatigue of controlling strain. Manson-Coffin type equation is derived by considering effect of nonproportional additional hardening.

对于应变控制的低周疲劳，最大剪应力参量通过简单的循环本构关系转换为最大剪应变参量，由此导出了Manson—Coffin型的公式，考虑了非比例循环附加强化对低周疲劳寿命的影响。

Ever since the first proposal of the presence of β\|Fe in 1885 by Osmond, a great debate on the cause of quench hardening of steels was going on until 1922 when Westgren and Phragmén disproved the presence of β\|Fe by high temperature X\|ray diffraction analysis.

自从Osmond在 1885年首次提出β Fe以为，直到 192 2年Westgren和Phragm啨n用高温X射线衍射证明β Fe与α Fe有相同的体心立方结构为止，在很长时间内，冶金学家一直为钢为什么在淬火后变硬而争论不休。

The inherent variation in microstructure of as –cast pearlitic irons such as gray pearlitic malleable and modular often makes preliminary heat treatment necessary in order to assure desired uniformity of subsequent induction hardening results .

在当–cast珠光体铁上微结构的固有变化例如灰色珠光体展性和模件经常使得初步热治疗是必要的为了保证期望均一随后感应加热淬火结果。

The hydration and hardening mechanism of a polymer concrete, and the possibility and practicability of its use in an emergency repair of the road pavements are expounded by researching on the mix proportion and physicomechanical properties of the polymer concrete.

通过对聚合物混凝土配合比和物理力学性能研究，阐述了聚合物混凝土水化硬化机理和在道路路面应急抢修应用的可能性和现实性。

Meanwhile, the hardening process of phosphorous slag cement was also determined by trimethylsilylation method and mercury porosimeter.

利用X射线衍射、扫描电镜及差热分析等测试手段，对少熟料磷渣水泥的水化产物进行了分析，并结合三甲基硅烷化法和压汞仪对该种水泥的水化硬化过程进行了研究

These tests show that: 1. suction decreases with the increase of the water saturation in the chalk; 2. stress variants proposed are available for describing the stress state of the unsaturated chalk; 3. preconsolidation pressure increases with suction, while the effects of suction on the compressibility coefficients λ and κ are not evident; 4. as usual unsaturated soils, the permeability to oil of chalk increases with the suction; 5. yield strength of the chalk behaves with volumetric strain hardening; 6. cohesive behaviour of the chalk is related to the stress level, and relation between time-dependent deformation and logt is linear; 7. cohesion of the chalk decreases with the increase of the suction, while the elastic stiffness and the cohesion coefficient increase; 8. strength and elastic modulus increase with the strain rate, while the strain at the peak strength decreases with the increase of the strain rate.

试验结果表明，白垩中的虹吸力随水饱和度的降低而提高；吸力、水饱和度和强度的变化过程均与时间有关；可用由理论分析得到的应力状态变量描述非饱和白垩的平衡状态；前期固结压力随吸力增加而提高，而压缩指数λ与κ则同吸力无关；应力大于前期固结压力时，粘性变形与时间的对数关系曲线呈线性关系，其大小和增长速率均随吸力减小而增大，可视为白垩弹性刚度降低和粘性系数增大的结果；前期固结压力和变形模量随着应变速率的提高而提高，压缩指数κ和λ则随应变速率的提高而减小；应变速率较低时，粘性和吸力对前期固结压力及压缩指数的影响较小；白垩中油的渗透性随着吸力增加而提高；白垩在屈服阶段具有明显的体积应变硬化特性。

Because the relationship between the roller with ink performance, a printing plate to business card printing and membership card making text, pattern of clarity.

因为网纹辊关系着传墨性能，印版关系到制卡和会员卡制作文字、图案的清晰度。

Intuitively, Urban Maximum Flux Principle is to calculate or sense interplays, correlations or complexity of relational reality, and then maximize it under constraints.

直观说来，城市最大流原理就是计算或感知关系实在的联系及耦合或复杂性，并在约束条件下使之最大化。