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The microstructure and tensile fracture surface of the Q235 steel has been investigated by TEM and SEM. 应用TEM和sem观察钢的微观组织结构及拉伸断口。
At this point, tensile fracture partially occurred, as evidenced by some apparent necking. 这时，一些明显的颈缩现象表明，发生了局部拉伸断裂。
The tensile fracture of FSW appears to be dimple and the fracture mechanism is analyzed through dislocation theory. 断口分析表明,搅拌摩擦焊接头断口为明显的韧窝形貌,并用位错理论解释了微观断裂机制。
The microscopic structure and the tensile fracture surface of annealed samples were investigated by using OM and SEM. 测定了不同退火温度下,钛管抗拉性能,并用SEM观察了拉伸断口形貌。
Meanwhile,a useful value for following study on tensile fracture mechanism of UHMWPE/LDPE is given. 对后续研究UHMWPE/LDPE复合材料声发射特性和拉伸破坏机理具有参考价值。
And then Al_2O_3 /Cu composite were prepared through hot-extruded, the microstructure, tensile fracture and interface were observed and analyzed. 然后采用热挤压法制取了Al_2O_3/Cu复合材料,对其显微组织和拉伸断口及界面进行观察与分析。
The problem of tensile fracture convexity could be solved by optimizing heat treatment technology and controlling grade of inclusion in raw materials. 通过调整热处理工艺与控制材料中夹杂物级别可以解决断口不平问题。
The experiments showed that the tensile fracture strain of such PMMA specimens was nearly ten times of that un-precompressed. 实验结果表明,与未进行预压缩处理的试验片相比,预压缩处理后的试验片的拉伸断裂应变约为前者的10倍。
In this paper, the tensile fracture mechanics model of aramid fiber is discussed, while the mechanical properties of the fiber is simulated based on a nonlinear model. 摘要探讨了芳纶的抗拉伸断裂宏观力学模型，并对纤维的力学性能进行了模拟。
In-situ observations of fracture processes in scanning electron microscope were employed to study the tensile fracture behavior of the NEPE solid propellant. 采用原位拉伸扫描电镜技术对NEPE推进剂的单轴拉伸破坏过程进行了研究。
Tensile fracture of the SiCw/Al Li composite is in the transgranular dimple type. The fracture mode does not change from transgranular to intergranular with aging time, which always exists in Al Li alloys. SiCw/Al－Li复合材料的拉伸断口呈穿晶韧窝状，不存在通常Al－Li合金中因时效引起的断口形貌由穿晶型向沿晶型过渡的现象
The observation and analysis for the tensile fracture of hot rolled plate by SEM and EDS is a valid method to discover the influence of the inclusions in the plate on the elongation. 应用扫描电子显微镜及能谱仪对热轧中板拉伸断口进行形貌观察和夹杂物类型分析,以探讨热轧中板中夹杂物对其伸长率的影响。
SiC particles and dimple are present in the fracture of the tensile specimen of SiC P/MB 2 composites,there is interfacial debonding between the SiC particles and the matrix in the tensile fracture at the elevated temperature. 复合材料的拉伸试样断口存在SiC颗粒和韧窝，高温拉伸试样断口存在界面脱粘。
The microstructure and the tensile fracture behavior of Ti 3Al Nb (Ti 24Al 14Nb 3V 0.5Mo) (mole percent) alloy under different heat treatment conditions were studied by TEM and by means of S 570 SEM with tensile apparatus. 用透射电镜及备有拉伸装置的S?570扫描电镜，研究了Ti3Al?Nb（Ti?24Al?14Nb?3V?0.;5Mo）（摩尔百分数）合金在不同热处理制度下的组织形貌以及试样的拉伸断裂过程。
A tensile facture fractal model of grain filled polymer composites on the base of the fractal theory was established,and an equitation of the tensile fracture fractal dimension was proposed. 基于分形理论构建了颗粒填充高分子复合材料拉伸断口的分形模型,进而提出了分形维数计算公式。
By way of suitable heat treatment, the tensile fracture morphology changes from brittle intercrystalline fracture to dimple fracture, so the strength and ductility of the alloy is increased. 采用适当的热处理工艺可使合金强韧化 ,拉伸断口由脆性的沿晶断裂变为韧窝状断裂。
ARE THE FAULTS CONTROLLING MESO-CENOZOIC BEARING OIL AND GAS BASINS IN EASTERN CHINA TENSILE FRACTURES? 中国东部某些中、新生代含油气盆地与部分北东向正断层成因分析?
The strongly fractured layers overthrust from southeast to northwest, which is proved through tensile fractures and boudins in the layers. 是由此产生的推覆体差异剥蚀的结果，这种次级逆冲推覆作用发生在扬子板块前陆褶冲带的变形之后。
A STUDY OF TENSILE FRACTURE OF POLYMER MATERIALS 聚合物材料的拉伸断裂研究
Perhaps there is a fracture in the water pipe. 也许水管有裂缝了。