| 1. | Quantitative metallographic analysis of modification level of hypoeutectic al - si alloys
合金变质级别的定量金相分析 |
| 2. | The failure of the spindle half - coupling on the bloomer has been analysed by many methods , such as chemical analysis , mechanical property analysis and metallographic analysis
摘要利用化学分析、力学性能分析及金相分析等手段，对初轧机接轴半联轴节失效原因进行了分析。 |
| 3. | The hot austenite grain distribution and the phase composition at normal temperature were obtained with the aid of metallographic analysis method after the rolled workpieces were divided at the specified position on the linear cutting machine
对轧后工件进行指定位置线切割取样，并用金相分析法得到变形后工件的高温奥氏体晶粒尺寸分布及低温相组成。 |
| 4. | The microstructure , the hardness and the wear resistance properties of the composites fabricated by semi - solid casting has been studied and analyzed metallographic analysis indicated that sic particles dispersed uniformly in the composites
本文采用半固态复合铸造法制备了sic颗粒增强铝基复合材料，并对这一系列材料的微观组织、硬度及耐磨性能进行了研究与分析。 |
| 5. | With frame gather card and ccd , metallographic image which can be processed by computer is acquired after a serials of the applications of digital image technique such as gray level transformation , dichotomy , noise eliminating , dilation and erosion , image enhancement , boundary detection , etc . an automatic quantitative metallographic analysis system is developed with visual c + + 6 . 0 to realize the measuring of the size of the metal crystalline grain , evaluation the proportion of the second tissue of the metal , micro hardness . with three - level browser / server mode and active server technology , the system gives the remote user the applying service through network to communicate and analyze the image information
利用数字图像处理技术，对图像采集卡或ccd摄像头采集到的金相图像进行灰度转换、二值化、噪音消除、图像增强、边缘提取等一系列图像预处理，获得计算机可以处理的数字图像；并利用visualc + + 6 . 0开发定量金相分析系统，以实现对晶粒大小、金相组织第二相相对含量、显微硬度等参量的自动测量；采用基于browser server的三层体系结构，通过网络访问，并利用activeserver技术给远程用户提供应用服务，以便于根据图像分析结果，给出专家分析意见，实现异地分析及交流。 |
| 6. | Metallographic analysis indicated that sic particles dispersed separately and more uniformly in the parts than in the ingots and the stir techniques during remelting was decisive to the die - casting of the composite . the interface between sic particles and the alloy was clearer than that in ingots
对压铸件的金相检验表明，重熔搅拌工艺对复合材料压铸件的成功制备有重要意义； sic颗粒在压铸件中的分布比在铸锭中更为均匀，且呈单颗粒分布， sic颗粒与基体结合处的界面也比铸锭中更为清晰。 |
| 7. | The main research content of the article is involved as follows : ( 1 ) the research and discussion of the quantitative metallographic analysis methods and the measuring methods of micro hardness . ( 2 ) the application of digital image technique in metallographic image preprocess such as gray level transformation , dichotomy , noise eliminating , dilation and erosion , image enhancement , boundary detection , etc . the application of the wavelet and multi - resolution analysis in metallographic image procession to improve the measuring accuracy and efficiency . the application of the region growth and mathematical morphology in analyzing image parameters to improve the flexibility and exaction
本文的主要研究内容： ( 1 )定量金相分析和显微硬度测量的方法研究； ( 2 )利用数字图像处理技术，实现金相图像的灰度转换、二值化、噪音消除、膨胀收缩、图像增强、边缘提取等预处理；引入小波理论、基于数学形态学的区域生长法对采样图像进行分析，实现了对采集图像边缘的有效提取，从而提高了测量精度； ( 3 )开发了金相图像分析系统的主体结构(硬件结构和软件结构) ； ( 4 )采用windows开发平台的面向对象程序设计语言microsoftvisualc + +进行系统的模块化设计； ( 5 )提出了采用多模式的知识表示方法建立知识库，应用正反推理、模糊数学模型、基于规则的模式匹配模型建立金相分析专家系统。 |
| 8. | It was pointed with the experiment methods of electro - chemistry , metallographic analysis , weighing , spot count and bending that : the additives play an important part in getting high quality coating . however , the effect of different kinds of additives on performance of electrolyte and coating and the part of same additive in different electrolyte are varied . each additive is selective to electrolyte
通过电化学方法、金相组织分析、重量法、斑点法、弯曲法等试验方法研究指出：添加剂对镀层质量起着至关重要的作用，但不同类型的添加剂对镀液和镀层性能的影响并不相同，同一添加剂在不同镀液中所起作用亦有差异，各种镀液对添加剂具有选择性。 |
| 9. | The equal - grain - area - circle diameter and the roundness were defined to scale the form factor and quantified the degree of the grain ' s globalization . metallographic analysis , xrd , tem and edax were expired to observe the evolution of the microstructure , the changing of the phase and the changing of the component
定量测试晶粒的等积圆直径和球化度等形貌参数，比较形变组织的半固态球化效果，采用金相分析、 xrd 、 tem 、 edax等方法观测组织演变过程特点，并考察第二相及微区成分的变化。 |
| 10. | Metallographic analysis refers to inspecting and evaluating material microstructure with all kinds of analyzing apparatuses . not only it can reveal the relation between microstructure and properties , evaluate the reliability of the technological methods , but also it is the important means to inspect the product quality , develop new material and technology
金相分析主要是利用各种显微镜对材料的微观组织结构进行检验和评定，它既能揭示不同显微组织和性能的关系，又能检验工艺手段是否达到了预期的目的，是检验产品质量的依据，是发展新材料、新工艺的重要手段。 |
