用扫描电镜对断口及二次裂纹形貌进行观察。
Fracture surfaces and secondary cracks morphologies were observed using scanning electron microscopy (SEM).
SEM分析结果表明铱钽钛金属氧化物阳极涂层呈现多孔多裂纹形貌结构。
The SEM results indicated that all coatings were of a porous and cracked_mud microstructure influenced greatly by the composition of coatings.
对超声探伤报废的三块模块进行解剖试验，表露出的裂纹形貌完全说明了这点。
The fact is fully testified by inspection of cracks revealed in the dissecting tests of three pieces of mold-lump scrapped by ultrasonic flaw detection.
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。
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.
采用金相和电镜等手段对堆焊裂纹形貌进行了观察，并研究了稀土氧化物对堆焊金属抗开裂性能及塑、韧性的影响。
The crack morphology of hardfacing metal was investigated by means of optical and scanning electron microscopy. The effect of re oxide on cracking resistance of hardfacing metal was studied.
观测到了激波掠过后水泥试样中裂纹形貌的分布规律；分析了激波在水泥试样中的传播过程及裂纹的起裂扩展机理；
The fracture distribution rule in the cement sample abaft blast wave by-passing is observed, and blast wave spreading process and the fracture initiation & propagation mechanism are analyzed.
根据扫描断口形貌和裂纹扩展途径的金相观察，还探讨了在混合溶液中的应力腐蚀机制。
The stress corrosion mechanism in mixed solutions was studied based on the metallographic observations of scanning fracture shapes and crack extension direction.
断面形貌的变化与玻纤在基体树脂中的应力集中作用及对裂纹扩展的阻碍作用有关。
Change of section appearance is related to stress concentration of glass fiber on the base resin and on hindering of crack extension.
裂纹宏观形貌平直。
结果表明，失效形貌呈典型的接触疲劳特征，两种疲劳裂纹形成模式同时存在。
The results showed that failure morphology was of typical contact fatigue characteristics, and two modes of fatigue crack formation worked.
研究表明该钢具有较好的抗应力腐蚀性能，其应力腐蚀断裂形貌为穿晶、解理断裂，并有二次裂纹。
The stress corrosion cracking sensitivity of the steel was low, and the fractography of its stress corrosion cracking showed transgranular and quasi-cleavage fracture with secondary cracks.
用扫描电镜观察裂纹的形貌及分布。
The morphology and distribution feature of grinding cracks are carefully observed with the SEM.
用扫描电镜（SEM）分析了X60管线钢在未变形和10%的预拉伸变形后循环载荷下的裂纹断口形貌。
The crack fractographs of X60 pipeline steel after 10% per-tension deformation under cyclic loading are investigated by the SEM.
依据断口扫描形貌和裂纹扩展途径的金相观察，探讨了在混合溶液中应力腐蚀机制。
The stress corrosion mechanism of in mixed solutions is explored based upon metallographic analysis of crack development.
踏面斜裂纹及断口的宏观形貌和理化检验与分析表明，踏面斜裂纹伤损属于滚动接触疲劳裂纹伤损类型。
The macro profile and physicochemical examination of the tread oblique crack shows that the crack falls into the category of rolling contact fatigue type.
通过观察断裂风机轴裂纹宏观和微观形貌，检验化学成分、显微硬度等方法对风机轴断裂的原因进行了分析。
Fracture analysis of the fan shaft was made by observing macroscopic and microscopic appearances of the crack, and examining micro hardness and chemical composition of the material.
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。
Based on the theory of surface diffusion, a finite element method was developed to simulate shape evolutions of two-dimensional microcracks with surface perturbation.
通过裂纹宏微观形貌分析、腐蚀介质分析、对蒸发塔制造过程质量分析等，证实了独山子石化乙二醇蒸发塔的裂纹属晶间型应力腐蚀裂纹。
By the analyses of corrosive medium and manufacturing process quality, the cracks of glycol evaporators in Dushanzi Petrochemical Company have been confirmed to be intergranular corrosion cracks.
发现裂纹剖面宏观形貌特征与制动盘疲劳裂纹扩展规律之间存在一定的关联，为制动盘寿命评估提供了新的思路。
The relation of law of the fatigue crack extending and feature of macro-profile is discovered, which provides a new method for the life estimation of the brake disc.
利用扫描电镜对失效压铸模具热疲劳裂纹的宏观、微观、断口形貌进行了分析。
The macro-morphology, micro-morphology and fracture morphlogy of failure die casting dies were analyzed.
分析了制动盘裂纹剖面的宏观形貌特征，并对制动盘裂纹萌生和扩展机理进行探讨。
The feature of macro-profile is analyzed, and the crack initiation and extending mechanism of brake disc is discussed.
裂纹的疲劳蠕变混合形貌反映了高温下交互作用的影响。
The mixed fatigue and creep morphology reflected the influence of their interaction at high temperature.
根据断口的宏、微观形貌，认为油管焊接后未及时消除焊接应力，产生了淬硬裂纹；
The macro and micro analysis of fracture indicates that it produces fracture because it doesn′t avoid welding stress in time.
本文还对裂纹扩展途径与断口形貌之间的关系进行了分析，对进一步研究低温用钢的疲劳特性和低温下工程结构的失效分析具有重要意义。
We also analyse the relationship between crack growth track and fractography. Thereforde, it is significant for studying the fatigue property of the steel used and its fatigue analy…
通过SEM，随着锌掺入量的增加，薄膜表面形貌由结构致密、平滑逐渐变得多孔，粗糙，裂纹也随之增加。
Through SEM technology, with the increase of zinc, the surface of film will become coarse, porous and with more cracks.
飞机发动机减速器支撑杆在加工过程中易产生微裂纹，通过显微组织检验、断口形貌观察、微区成分分析以及含氢量测定和模拟焊接试验等方法对其裂纹产生的原因进行了分析。
The surface tiny crack generating by sample hardening were found in test, and some surface fracture caused by inclusion and gas pocket, and these appearance should be correctly analyzed and judged.
利用扫描、电子探针及能谱分析技术，从母材、热裂纹断口形貌等方面分析了8090合金热裂纹敏感性高的原因。
The reasons of hot cracking susceptibility are analyzed through electronic-scanning, electronic-probing and energyspectrometric methods on the patterns of fracture surface of hot crack and base metal.
测定了析出相的类型和组成，测试和计算了冲击、拉伸状态下裂纹的形核能与扩展能，并通过SEM研究了断面形貌。
The crack nucleation energy and the propagation energy were measured under impact and tensile testing. The fracture surface was examined by SEM.
通过X射线衍射分析（XRD）、扫描电镜（SEM）等观察分析了复合粉涂层表面形貌，分析了表面微裂纹和孔隙的形成过程。
Phases constitution, microstructure and element distribution of the coating were studied by X-ray diffraction(XRD), scanning electron microscope(SEM) and electron probe microanalysis(EPMA).
通过X射线衍射分析（XRD）、扫描电镜（SEM）等观察分析了复合粉涂层表面形貌，分析了表面微裂纹和孔隙的形成过程。
Phases constitution, microstructure and element distribution of the coating were studied by X-ray diffraction(XRD), scanning electron microscope(SEM) and electron probe microanalysis(EPMA).
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