其冲击断口微观形貌由室温时的韧窝断口逐渐变为低温下的塑性沿晶断口。
The fracture appearance is dimple at room temperature, it changes into intercrystalline fracture at low-temperature.
运用扫描电镜（SEM）和偏光显微镜对共混物的冲击断口形貌以及结晶情况进行了观察与分析；
The morphology and the crystallinity of the blends were studied with SEM and polarizing microscope respectively.
冲击断口的SEM照片显示，纳米二氧化硅和纳米碳酸钙诱发银纹的能力显著，是增强增韧环氧树脂的主要原因。
SEM impact fracture showed that powerful microcrack induction ability of nano SiO2 and nano CaCO3 was the main reason of enhancement and toughness for epoxy resin.
本文对珠光体球铁常温下小能量多次冲击断口进行了宏观和微观的分析；提供了一组珠光体球铁小能多冲断口微观形貌的电子显微镜照片；
This paper presents the macro and micro analysis of pearlite ductile iron small energy multiimpact fracture surface a group of it's microscope photographs are supplied.
并结合断口分析，探讨了钨合金在冲击作用下发生断裂的微观特征与韧脆转化间的关系及其物理本质。
Microscopic features of dynamic fracture of tungsten alloys under shock loading, as well as their relationship with the ductility_brittleness transition were discussed.
研究了转炉托圈的焊接工艺，结合拉伸试验、冲击试验、断口和金相组织分析，进行了焊接工艺的评定。
The welding process of converter ring was studied. By means of tensile and impact test, fractures and microstructure analysis, the evaluation of the welding process was made.
示波冲击曲线与断口形貌和硬度以及组织有良好的对应关系，是韧性分析的有效方法之一。
Oscilloscope Charpy impact curve corresponds well with fractographic characteristic, hardness curve and the microstructures, therefore is the effective toughness analyzing method.
结果表明，经过焊后热处理后焊缝出现严重的低温脆化，其冲击试样的断口为解理状形貌；
The results show that after post-weld heat treatment(PWHT), the welds of X80 steel seriously embrittle, and the fracture morphology of impact specimens is cleavage.
研究了温度对聚氯乙烯PVC缺口冲击强度、断口形貌特征及断面粗糙度的影响。
The effects of testing temperature on notch impact strength, fractographic features and fracture surface roughness of PVC have been studied.
结果表明：X70管线钢焊接接头热影响区冲击试样的冲击功与断口剪切面积基本成线性比例关系，冲击功越高，剪切面积越大。
The results indicated that impact absorbed energy of heat-affected zone in welded joint of X70 pipeline steel were proportional with shearing area on the whole.
在透射电镜和扫描电镜上观察分析了合金析出物的特征和冲击试样的断口形貌及断裂机制。
The aging precipitant and fracture topography were observed under TEM and SEM. The mechanism of fracture of samples was analysed.
本文研究了温度对ABS塑料抗冲击性能和断口形貌的影响。
The effects of temperature on impact strength and fractured surface morphology of ABS plastics were studied in this paper.
通过硬度试验、冲击试验、断口扫描和金相组织观察，研究了T92钢焊接接头的韧性与组织的关系。
Through hardness test, impacting test, SEM of failure surface and microstructure observation, the relationship between the toughness and its microstructure of welding joint of T92 steel was studied.
采用冲击试验和断口形貌分析对经不同温度时效处理后的AZ80镁合金冲击性能进行了分析。
The impact test and SEM fracture analysis were carried on for AZ80 magnesium alloy after different temperature ageing, and the effects of ageing on impact property were investigated.
当裂纹扩展至拉伸过载区，断口表面则呈现明显的冲击断裂特征。
The fatigue fracture surface exhibits obviously impact facture characterization, when the crack propagates into overload tensile zone.
当裂纹扩展至拉伸过载区，断口表面则呈现明显的冲击断裂特征。
The fatigue fracture surface exhibits obviously impact facture characterization, when the crack propagates into overload tensile zone.
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