只有变形量高于临界变形量时才能发生动态再结晶。
Only deformation is higher the critical deformation can the dynamic recrystallization be occurred.
临界变形区晶粒长大的最初驱动力是晶界两侧的畸变能差。
The primary driving force of coarse grain formation in the critical deformation region is the energy difference of distortion between both sides of grain boundaries.
研究表明，同种金属复合时，随轧制温度升高．临界变形明显降低；
The study results indicate that the threshold deformation at which materials of the same metal is bonding to each other decreases with increasing rolling temperature.
本文论述了GH49合金锻造叶片局部粗晶形成的主要原因是临界变形。
The origin of localized coarse grains in forged GH49 alloy blades and some approaches of their prevention are studied in this paper.
基于金属变形理论，论述了金属常温下临界变形后，晶粒快速长大的机理。
Basing on metal deforming theory, the principle of grains growing up quickly after critical deforming of metal under normal temperature are stated.
结合控制气氛轧制复合工艺，研究了轧制张力和坯料加热温度对轧制复合临界变形程度和复合后厚比的影响规律。
The effect of temperature and tensile force on the threshold deformation and the thickness ratio after bond was mainly studied under the condition of control atmosphere rolling process.
结果表明，由于连杆锻后宽度尺寸不够，在增加了热矫形工序后造成其变形量处于临界变形区，导致分模面切边带区出现严重的混晶和魏氏组织。
The result showed hot sizing was the main factor to cause critical deformation, to make mixed grain and coarse grain widmanstatten appear in parting face.
数值算例表明，对于复合材料旋转壳，横向剪切变形使其临界载荷降低；
The examples show that the critical load of composite shells of revolution will decrease when considering the transverse shear deformation.
最后，本文以实例分析讨论了横向剪切变形、开孔大小、线布载荷位置和几何参数对临界载荷的影响。
Finally, some examples are given to show the effect of shearing deformation, the hole size, the position of linear load and the geometrical parameter on the critical load.
根据材料的极限变形，导出管轴临界弯曲半径的计算方法。
According to the limit deformation, a method for calculation of the critical curvature of the tube is developed.
同时也分析了冲头对圆管碰撞时，导致圆管由弹性变形向塑性变形转化学的临界速度值。
We also analyse the critical velocity, at which elastic deformation translate to plastic deformation when the bullet impact the tube.
并以腰鼓变形量是否超过临界值作为焦炭塔判废的标准之一。
One of criteria for coker drum invalidation is whether the loin-drum deformation has exceeded the critical value.
弹性约束杆之临界力和变形不仅与杆截面特性相关，还取决于约束条件。
Critical force and deformation of elastic restraint rod not only depend on the rod cross section, but also on the restraint condition.
土体在动力荷载作用下，当动荷载与土体静强度的比值即循环应力比超过某一临界循环应力比时，土体才会发生累积变形和强度弱化。
The cycle stress ratio is the ratio of dynamic strength and soil static strength, as it passes the critical cycle stress ratio, accumulated deformation takes on and soil strength declines.
通过一系列室内三轴压缩试验研究了砂土的变形特性与临界状态。
A series of triaxial compression tests were performed to investigate the deformation characteristics and critical state of sand.
分析了散粒体临界状态下的变形特征，应用能量平衡原理导出了临界状态下的变形规律。
This paper analyses the deformation characteristics of granular materials at critical state, and the deformation regulation is derived on the principle of energy equilibrium.
通过现场观测和分析，认为存在一个使巷道围岩发生显著变形的临界深度。
Analysis show that there is a critical depth below which remarkable deformation will occur in the surrounding rock of the entry.
对于粉土的渗透变形，对粉土的临界水力比降、粉土抗渗强度的研究有重要意义。
The invention has great significance on the researches of the permeation deformation, the critical hydraulic gradient and the anti-permeability strength of the silt.
当临界荷载接近极限荷载时，应运用以承载力和变形综合确定单桩水平承载力设计值。
When critical bearing capacity approaches ultimate bearing capacity it should use bearing capacity and deformation index to synthetically confirm designated value of the single-pil…
计算表明，变形能的加入可以使临界核胚减小，并且提高铁素体开始转变的温度。
Results show that the critical nucleus will be reduced and the initial transformation temperature of ferrite improved with increase of the deformation store energy.
最后对三种结构型式的拱顶储罐的变形方式、应力状态、塑性变形历史、塑性极限压力、弹性失稳临界压力进行了分析与对比。
The analysis and contrast of deformation pattern, state of stress, plastic deformation history, plastic limit load and limit load of elastic buckling are analyzed and contrasted.
介绍了型砂塑性变形临界值、回弹势能的概念及其测试方法；
The conceptions and testing methods of the plastic deformation threshold and springback potential are introduced.
通过比较压缩变形载荷与压缩失稳变形载荷的大小，导出了临界相对厚度。
By comparing the load of compression deformation and that of compression buckling deformation, the critical relative thickness is derived.
用计算机技术和传感技术组成系统构成型砂多项性能测试仪，测定湿型粘土砂塑性变形临界值。
Critical value of plastic deformation of green sand has been tested by molding sand multi-tester using computer and sensors.
为了获得足够的应变积累来克服动态再结晶的临界应变，低温大变形量的变形是基本条件。
Lowering temperature window of rolling and large strain accumulation is basic condition for exceeding of critical strain for dynamic recrystallization to refine austenite grain size.
然后介绍在岩体不同层次上变形破坏的自相似特性及破坏的临界密度指数分形特性。
Then, the self-similarity of deformation and fracture of rock mass at different structural hierarchies and the fractal natures of the concentration parameters of fracture are introduced.
由第二个临界条件导出压缩波前的屈曲变形约束方程。
The supplementary restraint equation at the compression wave front is obtained by use of the second critical condition.
采用三次样条函数能量法，对冷轧轧后带材在纵向残余应力作用下的大挠度屈曲变形和临界失稳问题进行了研究。
The large deflection buckling deformation of cold rolled strip acted on by residual stress is studied by using 3-Power spline function energy method.
采用三次样条函数能量法，对冷轧轧后带材在纵向残余应力作用下的大挠度屈曲变形和临界失稳问题进行了研究。
The large deflection buckling deformation of cold rolled strip acted on by residual stress is studied by using 3-Power spline function energy method.
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