There are also some micropores and microcracks in the reflowed alloy.
在回流焊形成的合金层中也有一些微孔和裂缝。
One reasonable explanation is that etching removes and blunts microcracks.
有一种合理的解释是说腐蚀能够去掉并钝化微裂纹。
The mortar is used to simulated the rock material to study its microcracks evolution laws.
采用砂浆来模拟岩石材料以研究其裂隙的演化规律。
This verifies the existence of dislocation pile-up and its stimulation to the nucleation of microcracks.
证实了位错塞积的存在及其对微裂纹形核的促进作用。
The formation of these microcracks is closely related to local conditions of the Tusion line concavities.
熔合线凹入处的局部条件直接影响微裂纹的形成。
Of the electroplating technology parameters, temperature has a great in - fluence upon the number of microcracks.
以氢气析出造成的微裂纹为主。电镀工艺参数中温度对微裂纹的多少影响很大。
These defects are composed of cavities and microcracks, whose locations, orientation and size are random variables.
这些缺陷被简化成微空洞或微裂纹等。它们的位置、方位以及尺寸等都是一些随机参量。
Microcracks of SCC initiated when the corrosion-enhanced dislocation emission and motion reached a certain condition.
当腐蚀促进的位错发射和运动达到临界状态时，应力腐蚀裂纹形核和扩展。
The digital image correlation technique is used to determine the deformation field of the rock material involving the microcracks.
提出用数字图像相关技术研究含微裂纹的岩石的变形。
The photographs of the sweep electron microscope show that fatigue damage are caused mainly by microcracks and impurities of metal.
通过疲劳断口的电镜扫描试验，证明防爆膜的疲劳破坏是由存在于金属内部的微裂纹和杂质所引起。
Average rate of the deposit defect examined is below 1.5%. The causation and situation of microcracks and voids are analysed in the test.
试验对堆焊层的平均孔隙缺陷率进行了测算，测算结果为碳化钨合金颗粒平均孔隙缺陷率低于1.5 % ，并对裂纹、孔隙分布及产生原因进行了分析。
The microcracks caused by the transforming inclusions associate closely with the mechanism of fracture and toughness in ceramic materials.
由夹杂转变引起的微开裂与陶瓷材料的断裂和增韧机制密切相关。
The microcracks in materials can generally be assumed to be elliptic, which can describe more exactly the properties of a microcracks system.
一般地，材料内部的微裂纹可采用椭圆形微裂纹进行描述以较真实地反映微裂纹系统的细观特性。
When carburized under high carbon potential (1. 1% C), microcracks tend to appear on the martensitic matrix near the outer surface of the layer.
表面碳势为1.1%C的渗碳硬化层内，临近外表面部位的枣核马氏体中会出现显微裂纹。
The effect of the microcracks size on damage evolution was investigated to overcome the limitations of damage models based only on defect density.
针对以缺陷密度为参量的细观损伤演化模型的局限性，着重研究了微裂纹尺寸对损伤演化的影响。
The results indicate that the plasma sprayed wollastonite coating has a rough surface and lamellar structure including some pores and microcracks.
结果表明：等离子喷涂硅灰石涂层具有粗糙的表面和层状结构，涂层内部存在一些气孔和微裂纹。
Theoretical study shows the net stress is not equal to the effective stress because of the existing microcracks in the low permeability sandstone.
理论研究表明，低渗岩石由于存在微裂缝，净应力不等于有效应力。
The local density of microcracks increasing suddenly may be helpful to interpret the phenomenon that part precursor records appear catastrophic jump.
微破裂集结时局部密度突然加大，有助于解释部分前兆记录突跳现象。
It was observed that there was a direct connection between the fractographs, the fracture path and the crack tip crazes or microcracks in rib region.
发现断面形态、裂纹路径以及肋状区裂端簇射状银纹群之间有直接联系。每一肋条由一细砂带和一粗破带构成。
A number of microcracks are produced around the scratched place because of the thermal stress and structural stress in the process of heat treatment.
在热处理过程中由于热应力和组织应力的作用，导致划伤部位产生大量的显微裂纹。
It is suggested that the broken crystal layer and microcracks in surface layer of the cold drawn rod is the source of the heat treatment induced cracks.
GH105合金冷拉棒表面存在的碎晶层和其内部的显微裂纹是热处理裂纹源。
The stable growth of cracks in a brittle material with three mutually perpendicular families of microcracks under proportional tensile loads was studied.
提出了含三相正交分布等尺寸微裂纹的准脆性材料稳定扩展的细观损伤演化模型。
The fracture process observed by SEM with a dynamic tensile stage showed that the dispersed phase of TLCP could delay and block the propagation of microcracks.
使用带拉伸实验台的扫描电镜观察到了TLCP微纤或微球对微裂纹扩展的阻滞及延缓作用。
The microcracks have certain effects on reducing the average thermal expansion coefficient, nevertheless they decrease the mechanical strength of the ceramics.
微裂纹对降低陶瓷材料的平均膨胀系数有一定作用，但同时又降低了材料的机械强度。
The general problem in various fracture processes microcracks or voids evolution has been investigated by employing non-equilibrium statistical concept and method.
本文用非平衡统计的概念和方法探讨了各种断裂过程中的共同问题——微裂纹或微空洞的演化。
Based on the theory of surface diffusion, a finite element method was developed to simulate shape evolutions of two-dimensional microcracks with surface perturbation.
根据表面扩散控制下物质迁移规律，建立有限单元法，对裂面形貌扰动下二维微裂纹演变过程进行数值模拟。
The present paper focuses on the simple case of collinear microcracks, and quantifies the influence by the statistical distribution of crack lengths and ligament sizes.
本文研究简单的共线微裂纹构型，确定由于微裂纹长度和韧度尺寸的统计分布所产生的影响。
Seismic velocity anisotropies are mainly caused by lattice preferred orientation( LPO) , shape preferred orientation( SPO) of the major minerals, and oriented microcracks.
影响各向异性的主要因素有岩石的结构构造、矿物的晶格优选方位（LPO）、形态优选方位（SPO）和定向微裂隙。
As brittle material, the cutting process is complexity, it is in general discontinuous and it is caused by the growth and propagation of the microcracks in Indus trial ceramics.
作为典型的高硬度脆性材料，其切削复杂，切削过程是一个不连续的过程，而内部微裂纹扩展是导致断裂和产生切屑原因。
As brittle material, the cutting process is complexity, it is in general discontinuous and it is caused by the growth and propagation of the microcracks in Indus trial ceramics.
作为典型的高硬度脆性材料，其切削复杂，切削过程是一个不连续的过程，而内部微裂纹扩展是导致断裂和产生切屑原因。
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