Improper forging process will also appear large grain or uneven, hardening crack phenomenon, forging cost is higher than the casting flange.
锻造工艺不当也会出现晶粒大或不均，硬化裂纹现象，锻造成本高于铸造法兰。
Figure 17 is a scanning electron microscope view of a typical hydrogen embrittlement crack where separation occurs along grain boundaries.
图17示意了用电子显微镜扫描出的沿晶粒边界产生的氢脆裂纹。
This paper advanced a study method that can observe plastic deformation behavior of surface layer of die cavity by showing austenite grain, size, crack morphology and propagation mode.
提出了通过显示奥氏体实际晶粒度、裂纹形貌和扩展方式来分析热锻模具型腔表层塑性变形行为的试验方法。
Paulownia has many virtues of beautiful grain, even texture, excellent moisture resistance, light and flexible, no crack, no deformation, difficult to burn, and well stain.
桐木木材纹理美观，结构均匀，质轻柔韧，不裂不挠，防潮性好、不易变形，不易燃烧，油漆染色良好。
The results reveal that the crack growth rates strongly depends on grain size and carbide distributin, and the creep crack growth rates are reversely relative to grain size.
结果表明晶粒尺寸和碳化物结构显著影响蠕变裂纹扩展速率，蠕变裂纹扩展速率与晶粒尺寸成反比关系。
Intergranular fracture. Fracture of polycrystalline materials by crack propagation along grain boundaries.
多晶材料裂纹沿着晶界扩展而断裂。
The oxidation degree of grain boundaries and crack propagation are qualitatively analyzed based on crack density and percentage of intergranular crack.
用裂纹密度和晶界裂纹的比例对晶界氧化的程度及裂纹扩展情况定性地加以分析。
The results show that the precipitates on the grain boundaries and precipitate free zone (PFZ) were the main factor to enhance the intergranular crack of the alloy.
结果发现，时效造成的沿晶析出及伴随产生的沉淀物无析出带是促使合金发生沿晶开裂的主要因素。
The critical event for cleavage fracture in notched specimens is the propagation of a ferrite grain-sized crack into the matrix, and is independent of specimen sizes and widths.
在缺口试样中，解理断裂的临界事件是铁素体晶粒尺寸的裂纹扩展进入基体，不随试样尺寸和宽度变化。
Dislocation cell and sub grain formed in ferrite grain are found at the stage of fatigue crack propagation in the area of crack tip.
疲劳裂纹扩展阶段裂纹尖端附近为形成于铁素体晶粒内的位错胞及亚晶。
When it is pretreated by high pressure roller, all the shape of grain like needle, slice, grate, and somes have crack.
高压辊磨预处理后颗粒形貌多为针状、片状和条形状，并且有些颗粒明显存在裂隙。
Coarsening grain and intercrystalline network ferrite depress crack growth resistance of the materials strongly and result in unstable propagation of crack very easily.
晶粒粗大及晶间网状铁素体强烈降低材料的裂纹扩展阻力，并极易导致裂纹的失稳扩展。
The fine grains, crack deflexion and grain-bridging are main toughening mechanisms of silicon carbide ceramic.
细晶、裂纹偏转和晶粒桥联是碳化硅陶瓷的主要增韧机制。
Cleavage fracture is a typical brittle fracture and also a process consisted of crack producing and spreading, and the mechanism is related to dislocation and crystalline grain.
解理断裂是典型的脆性断裂，解理断裂也是一个裂纹萌生和扩展的过程，其机制与位错和晶粒有关。
The short cracks deflect more severe in coarse grain structure than in fine grain one, result in roughness induced crack closure effect, therefore exhibit slow crack growth rate.
粗晶组织比细晶组织的裂纹偏折更大，粗糙度诱发闭合效应更强，因而裂纹扩展较幔。
From the model, the critical effect tensile stress for the initiation of hydrogen induced crack along grain boundaries has been derived.
由该模型推导出氢致沿晶裂纹萌生时的临界有效拉应力。
The results showed that the reasons of crack was of grain growth caused by improper heat treatment.
结果表明：裂纹是热处理不当造成晶粒长大所致。
Their toughening mechanisms were fine-grain toughening, crack deflection, crack branching and crack microbridging.
韧化机制为细晶韧化、裂纹偏转、裂纹分支和微桥接。
The results show that main cause of conchoidal fracture forming is that composition segregation in solidification grain boundary of casting steel reduces the resistance of crack propagation.
结果表明，沿一次晶晶界的成分偏析对裂纹扩展阻力的降低作用是铸钢中贝壳状断口形成的主要原因。
Real eggs raw open can see eggshell membrane wavy grain, a crack in this texture to cook an egg cooked disappear, fake eggs to make out.
真蛋生的打开能看到蛋壳膜上有裂缝状纹路，这种纹路在煮鸡蛋煮熟后消失，假蛋做不出来。
The thermal fatigue crack propagated mainly through the break-age of the interface of carbide and grain boundaries for either quenched or quenched and tempered steel.
无论是淬火或淬回火态的试样其热疲劳裂纹主要沿着碳化物与基体脱开处及晶界裂纹桥接而扩展。
The presence of grain boundary allotriomorphic ferrite can increase the compatible deformation capability of duplex microstructure, improve the crack initiation energy under impact loading;
适量仿晶界型铁素体的存在增加了复相组织的协调变形能力，提高了裂纹形成功；
The process of crack initiation and propagation was observed through replication, and the effect of grain size on the behaviour of short fatigue cracks was studied.
对两种晶粒尺寸的中碳钢光滑试样进行了旋转弯曲疲劳试验；应用复型技术监测了短裂纹形成与扩展过程，研究了晶粒尺寸对短裂纹行为的影响。
It is shown that the zigzag grain boundary may delay the initiation, growth and propagation of crack, as well as may also influence the crack morphology and the fracture mode markedly.
研究表明，弯曲晶界对裂纹的萌生、长大及扩展，对裂纹的形态及断裂方式，都有显著的影响。
It is used for the finishing of special leathers. WS 8446 can penetrate into the leather and provide natural appearance, uniformity and crack grain effect.
在加热条件下，其渗透入皮革，赋予涂层自然的外观、均一且裂面的效果。
With increasing stress, small holes are created, gather, grow and finally become a crack that crossed ferrite grain.
微孔在应变应力作用下扩展，贯通，形成裂纹，穿过铁素体。
With increasing stress, small holes are created, gather, grow and finally become a crack that crossed ferrite grain.
微孔在应变应力作用下扩展，贯通，形成裂纹，穿过铁素体。
应用推荐