fractography

fractography

1. FRACTOGRAPHY OF THE STRESS CORROSION CRACKING SPECIMENS OF TYPE 304 STAINLESS STEEL IN HIGH TEMPERATURE WATER CONTAINING BORIC ACID AND LITHIUM ION

304不锈钢在含硼和锂的高温水中的应力腐蚀破裂和断口分析

2. Instability Fracture and Fractography Morphology of PMMA

PMMA的失稳断裂与断口形态

3. The fracture reasons of fastening bolts are analyzed using fractography, metallographic analysis and hardness testing in this paper.

一根用来紧固节段式水泵的穿缸螺栓仅服役3个月便产生断裂。

4. Keywords stainless steels;stress corrosion cracking;fractography;aluminized;

不锈钢;应力腐蚀开裂;断口金相;渗铝;

5. However, the so called white speck, as sometimes appeared on the fractography of the checked sample weld, may lead to fracture or burst of steam pipes during high temperature operation.

但在抽检样品时接头断口上有时存在所谓的“白斑”组织。“白斑”的存在可导致蒸汽管在高温运行时发生破裂或爆管。

6. Keywords Tetra pod Like Zinc Oxide Whisker Nylon 6 Composites Heat Resistance Fractography;

关键词四脚状氧化锌晶须;尼龙6;复合材料;耐热性;断口观察;

7. Keywords: fractography, brittle material, failure mode, model rock.

关键词：裂形学、脆性材料、破裂模式、人工岩石。

8. Keywords impact fracture;impact damage;delamination;laminates;fractography;

冲击断裂;冲击损伤;分层;层合板;断口形貌;

9. Keywords Cold roll;Spalling;Fractography;Inclusion;

冷轧辊;剥落;断口分析;夹渣;

10. In terms of fractography of scanning electron microscopy, the mechanisms controlling creep rate and crack velocity were discussed.

利用断口组织的扫瞄电子显微镜分析，充分讨论了蠕变和慢 裂生长的机理。

11. The fracture in threaded portion of the second shaft of automobile gearbox was analyzed by means of chemical analysis?metallographic examination?macro and micro-scopic fractography .

变速箱第二轴在总装时发生批量断裂,断裂部位均在轴端螺纹收尾根部。采用化学成分分析、金相检验以及断口宏、微观分析等方法,对该轴的断裂原因进行分析。

12. The fractography of this alloy is changed from dimple fracture into cleavage fracture and inter-granular rapture with the extension of aging time.

另外,该不锈钢的CVN冲击试样断口形貌随着时效时间的延长由韧性断裂机制的韧窝断裂为主向脆性断裂机制的准解理断裂和穿晶断裂为主变化。

13. The fractography reveals that the alloy has high ductility because the dendritic phases produce in the alloy.

合金的断口分析结果表明, 由于产生了塑性枝晶相, 因此该合金具有较高塑性。

14. Keywords rotary kiln;RCF;fractography;Stress and Strain Analysis;damage;

回转窑;滚动接触疲劳;疲劳断口分析;应力-应变法;疲劳损伤;

15. On the basis of experiments, two kinds of butt joint forming physical models and three types of dimple models of fractography have been proposed. These models reveal the essence of welding process and the forming mechanism of white speck.

在试验研究的基础上,提出了两种形式的接头形成物理模型和3种类型的接头断口韧窝模型,由此可揭示接头的形成木质和“白斑”形成机制。

16. macroscoic fractography

宏观断口分析

17. Keywords quantitative fractography;instrumented impact test;3D topography;roughness;fractal;fracture property;

定量断口学;示波冲击;三维形貌;粗糙度;分形;断裂性能;

18. The bending fatigue properties and fractography of normalized tufftrided 45 steel were analyzed.

对45钢正火态软氮化处理前后的旋转弯曲疲劳性能及其断口进行了定量和电镜分析。

19. The fatigue fracture reason of the weld seam at the back supporting rod of the main reductor of an aircraft has been analyzed by fractography and metallographic test.

对某飞机主减速器后撑杆焊缝疲劳断裂原因作了分析。

20. It is found that traveling block hook was brittle fracture and crack originated from original flaw per Macro fractography and micro fractography.

对游车大钩断裂事故进行了调查研究,对其断口形貌进行了宏观和微观分析,发现游车大钩为脆性断裂,断口起源于原始缺陷。

21. Keywords small energy lash of heaps of times;fatigue strength;microstructure;fractography;

小能量多次冲击;疲劳强度;显微组织;断口形貌;

22. Keywords laminate;fractography;cleavage step;river pattern;interlaminar failure;

层合板;断口形貌;解理台阶;河流状花样;层间破坏;

23. Fractography of the quenched tensile specimen under cycling treatment changes from dimple pattern to mixed fracture with dimple and tear ridges.

循环温度场作用下淬火态合金拉伸试样断口由韧窝型断裂向韧窝和撕裂棱混合型断裂转变。

24. Keywords PBT;tensile fracture;loading rate;fractography;

拉伸断裂;加载速率;断口形貌;

25. The scanning electron microscope (SEM) is employed to study sandstone fractography under thermo-mechanical coupling effects.

摘要通过扫描电镜研究温度-拉应力共同作用下砂岩破坏的断口形貌。

26. The fracture reasons of the shaft which served in feed pump about 10 days are analyzed using fractography, metallographic analysis, composition analysis and strength testing in this paper.

摘要采用断口分析、金相检验、力学性能侧试和化学成分分析等方法，对服役10多天便发生断裂的给水泵轴进行了失效分析。

27. Fractography Retroestimating Fatigue Stress and Its Application on Blade Fracture Analysis in Engineering

断口反推疲劳应力及其在叶片断裂分析中的应用

28. fractography quantitative analysis

断口定量分析

29. Keywords Qauntitative fractography;Height parameter;Binocular imaging;Scanning electhong microscope;

断口定量分析;高度参数;双目成象;扫描电镜;

30. tensile fractography

断口形貌

31. The fractography has a characteristic of dimples of strengthening phase and the strain fracture appears in TMAZ of advancing side of joints.

断口的微观形貌具有强化相的韧窝特征，且断裂几乎发生在前进侧的热机影响区；

32. Keywords Fracture failure analysis;Fracture surface analysis;Fractography;Micromechanism;

断裂失效分析;断口分析;断口学;微观机理;

33. This paper gives on analysis on the causes for the cracking on fish plate by examination of chemical composition mechamical propertis、metallurgraphic、microhardmoss and fractography.

本文利用化学成份测试、机械性能试验、金相组织检验、显微硬度测定及断口分析等手段对鱼尾板进行了断裂原因分析。

34. In this paper, ultrasonic fractography method is used to test several types of PMMA specimens.

本文利用超声波断口图技术对不同类型的PMMA试件进行了测试。

35. In addition fractography of the wire istaken by scanning electron microscope,and its crack initiation, propagation anf fracture toughness aswell as fatigue mecahnism are investigated and discussed.

此外,还通过扫描电镜对钢丝断口进行了分析,并对钢丝的裂纹萌生、扩展、断裂韧度及疲劳机理进行了探讨。

36. Fractography analyses with scanning electron microscopy (SEM) were conducted to investigate the corrosion fatigue crack initiation mechanism.

此外，亦利用扫描式电子显微镜(SEM)观察破断面，以了解疲劳破坏机制。

37. Fractography analyses with scanning electronic microscopy (SEM) were conducted to determine fatigue fracture mechanisms of these two lead-free solders.

此外，亦利用扫描式电子显微镜(SEM)观察表面裂缝与疲劳破断面，以了解此两款无铅焊锡之疲劳破裂机制。

38. Fractography analyses were conducted with scanning electron microscopy (SEM) to determine the relation between dimple sizes and fracture toughness.

此外，亦利用扫描式电子显微镜(SEM)，对两款铝-镁合金破断面加以观察分析，以瞭解破断面上凹窝大小与其延韧性质之关系。

39. Microstructure and fractography for the specimens of X80 pipeline steel chargied with hydrogen in constant load tests and in slow strain rate tests(SSRT)were studied by optical microscopy and SEM.

用光学显微镜和扫描电镜观察了不同充氢电流下恒载荷拉伸试样、慢应变速率拉伸试样的显微组织和断口形貌。

40. The tensile fractography of SiCp/Al composite materials was observed by means of SEM. Its fracture was mainly dimple, accompanied by a few intergranular rupture.

用扫描电子显微镜观察了SiCp/Al复合材料的拉伸断口形貌 ,其断口以韧窝为主 ,有少量沿晶断特征。

41. The fractography of the CPM10V produced by forging 81 %TD, 85%TD, 93 % TD & 98% TD CPMl0V sintered bodies has been observed with SEMafter quenching arld tempering.

用扫描电镜观察了由相对密度为81%、85%、93%、98%的4种CPM10V烧结体热锻而成的材料的抗弯试样经淬火、回大后的断口形貌。

42. fatigue fractography

疲劳断口

43. At present, the knowledge of fractography of composite materials is growing and paid much attention.

目前，有关复合材料断裂图像的知识仍是有限的，但已引起人们的高度重视。

44. For the notched specimens, there are multiple crack initiation sites on the fractography.

瞬断区所承受的断裂应力随循环应力升高而降低；

45. The effects of Er addition in the flux(42%MnCl2+53%LiCl+5%CaF2,mass fraction,%) on the microstructure,tensile properties,fractography,and corrosion behaviour of casting AZ91 Mg alloy were investigated.

研究了熔炼时在熔剂(42%MnCl2+53%LiCl+5%CaF2,质量分数,%)中添加稀土Er对铸态AZ91镁合金显微组织、力学性能、断口形貌以及腐蚀行为的影响。

46. The mean micro hardness has reached HV496.3. The fractography of the fracture section of the tensile sample was characteristic of dimple typically which indicated that the fracture belong to ductilefracture.

硬度方面由于激光立体成形工艺的特点，最后几层的硬度比开始时的高，平均硬度达到了HV496.3； 拉伸试样的断口形貌具有典型的韧窝特征，属于延性断裂。

47. Keywords Cemented carbide;Surfacing;Deposited metal;Fractography;Impact toughness;

硬质合金;堆焊;熔敷金属;断口金相;冲击韧性;

48. In Chapter Five and Six, the microstructureand its transformation, fractography and failure mechanism of austenitic stainlesssteel in high temperature service were observed and discussed.

第5、6章重点研究了奥氏体不锈钢显微组织及其在高温运行中的转变、断裂特征及脆化失效机理；

49. The fractography showed brittle fracture in high SiC layer and dimple fracture in the matrix of low SiC layer.

第5章研究了多层梯度复合材料的疲劳裂纹扩展行为。 研究表明，当疲劳裂纹从低SIC层向高SIC层扩展时，在相邻两层过渡区会发生裂纹扩展延滞。

50. Keywords s: polymer;fractography;fracture;

聚合物;断口分析;断裂;

51. Keywords polyether ether ketone（PEEK）;tensiled fractography;impact fractography;

聚醚醚酮;拉伸断面形态;冲击断面形态;

52. The fractography of the fatigue crack initiation displayed cleavage f...

裂纹形成的断裂为穿晶解理机制,预应变可导致更多的二次裂纹。

53. The fractography of the fatigue crack initiation displayed cleavage facet and more second cracks after pre-training.

裂纹形成的断裂为穿晶解理机制，预应变可导致更多的二次裂纹。

54. The fractography of this steel changes from dimple fracture into cleavage fracture and inter-granular rapture.

该不锈钢的夏氏V型缺口(CharpyV-notch)冲击试样断口形貌随着时效时间的延长由韧窝断裂为主向准解理断裂和沿晶断裂为主变化。

55. A. C. R. Moloney, “Fractography and failure mechanisms of polymers and composites,” Elsevier Science Publishers Ltd, 1989, pp. 387-436.

贺克勤，短纤维强化聚碳酸酯复合材料机械与磨耗特性之研究，国立中央大学机械工程研究所，博士论文，民国86年。

56. ultrasonic fractography

超声波断层显微分析

57. Keywords Ultralong life fatigue;S-N curve;Surface crack;Subsurface crack;Fractography;Tool steel;

超长寿命疲劳;S-N曲线;表面裂纹;内部裂纹;断口观察;工具钢;

58. RESEARCH OF FLAKING AND ITS FRACTOGRAPHY IN A WHEEL STEEL

车轮钢中的白点及其断口形貌研究

59. The anisotropy during aging treatment for 2195 Al-Li alloy cold-rolling sheet is studied through tensile mechanical properties and electron fractography.

通过拉伸力学性能测试和断口形貌分析,研究了2195铝锂合金冷轧薄板的各向异性随时效时间变化的规律。

60. The fracture reasons of the transmission shaft were analyzed by means of chemical analysis,mechanical test,fractography and metallography examination.

通过检测化学成分、力学性能、宏观断口以及金相组织等方法对传动轴断裂原因进行了分析。

61. The fracture failure reasons of the hand-gear were analyzed by means of stress situation and fractography.

通过研究断裂时的应力状况及宏观断口,对手动小齿轮断裂失效原因进行了分析。

62. Fracture analysis of those bolts was conducted by means of macro examination, fractography and chemical composition analysis.

采用宏、微观检验和化学成分分析等方法对失效件进行了检测。

63. Effects of solution treatment parameters on microstructures, tensile properties and fractography of Al-9.8Zn-2.37Mg-2.22Cu0.12Zr alloy were studied by tensile testing, optical microscopy, SEM and EDS.

采用拉伸力学性能测试、金相观察、SEM和EDS等方法研究了固溶温度与时间对Al-9.8Zn-2.37Mg-2.22Cu-0.12Zr铝合金微观组织、拉伸性能及断口形貌的影响。

64. The cause of the ballrace craze of our product was analyzed by means of fractography,metallographic examination,ingredient analyses,electron microscope analyses and rigidity detection,etc.

采用断口分析、金相检验、成份分析、电镜分析和硬度检测等方法对某产品用的滚道分析了产生裂纹的原因。

65. The achievement of fractography for metallic materials promoted the diagnosis for mechanical failure and the improvement of product quality.

金属材料断口学得到了充分的发展和完善，促进了机械产品失效的分析诊断和产品内在本质的改善；

66. Using CAE and fractography, the causes of bolt breaking and failure observed in a pedestal on the airborne radar are analyzed.

针对天线座上螺钉松动的情况,根据螺纹松动的机理,提出有效的防松措施。

67. Keywords Fe-Si intermetallic compound;thermal shock resistance;molten aluminum;fractography;

铁硅金属间化合物;抗热震性;熔铝;断口形貌;

68. Keywords Ferritic steel;Weldments;Microstructure;Fractography;

铁素体钢;焊件;显微结构;断口金相;

69. Keywords high nitrogen bearing austenitic steel;low temperature brittle fracture;fracture path;fractography;

高氮奥氏体钢;低温脆断;断裂途径;断口形貌;

70. Standard Practice for Fractography and Characterization of Fracture Origins in Advanced Ceramics

高级陶瓷中断裂点的断口组织检查和特性的标准规程