Nodular cast iron specimens with typical meso structure are tested to study the meso damage evolution and failure mechanism at different triaxial stress states. 选用具有典型细观结构特征的球墨铸铁材料进行试验,探讨这种金属材料在各种三轴应力状态下的细观损伤破坏。
The imaging manifestation and pathological finding were studied comparatively. Results The nodular and mass in image indicate the papillary carcinoid tissue and twisted destructed structure; 结果影像学上表现的结节或肿块征象在病理组织学上为乳头状的肿瘤以及肺组织被扭曲、破坏的结构;
Results Of 139 breast carcinomas, mass and nodular type were found in 88 cases, simple calcified type in 39 cases, local structure malformation type in 11 cases, and ductal obstruction type in 1 case. 结果139例乳腺癌中肿块结节型88例,单纯钙化型39例,局部结构紊乱型11例,导管阻塞型1例。
Adding copper into nodular iron caused change of its structure and properties both in as-cast as well as heat-treated condition that expanded application scope of nodular iron. 加铜的球墨铸铁无论铸态或热处理都引起了组织及性能的变化,这种改变拓宽了球墨铸铁的应用范围。
Formation mechanism of nodular structure in polymeric denser membranes 聚合物致密膜中球粒状结构的形成机制
Transverse section of the nodular lobes, the structure of mature is constituted by following tissues: phloem, xylem, endodermis layer, middle cortical cell, tannin layer, periderm and epidermis from the inner to the outer side. 在横切面上,成熟根瘤结构由内而外,依次为木质部、韧皮部、内皮层、中皮层、单宁层、周皮层和表皮层。
Initiation, Development and Structure of Rice Nodular Structure 稻根瘤状结构的发生发育及结构
An automatic evaluating system of graphite sphere grade of nodular cast iron has been established. The hardware of the system consists of microscope, CCD, imaging acquisition card and personal computer and digital images of metallographic structure of the samples can be collected satisfactorily. 采用普通金相显微镜、CCD、图像卡和计算机构成了球墨铸铁球化级别评定的硬件系统,可以实现被测试样金相组织的数字化图像获取,其图像质量能够满足数据处理要求。
Computational Micromechanics Analysis of Tensile Strength and Elongation in Nodular Iron with Ferrite and/ or Pearlite Matrix Structure 铁素体珠光体球铁强度和延伸率的计算细观力学分析
But in the production of thin wall nodular iron castings, it has the defaults that the white structure and hard spots can easily be formed, deteriorating the mechanical properties. 但,也存在在薄壁球铁件生产中产生渗碳体组织、产生硬质点,造成薄壁球铁件硬脆难以加工等缺点。
The results showed that the coating formed the melted zone ( columnar grains), the sintered zone ( nodular structure) and re-mained plasma-sprayed zone ( lamellar structure) according to the different temperature range. 研究结果表明,在激光作用下,相应于不同的温度范围涂层形成了熔凝区(柱状晶)、烧结区(团絮状组织)和残留等离子区(层状结构)。
The obtained Ni-P coating showed the amorphous structure with a typical spherical nodular structure. 所制备的Ni-P涂层为非晶态结构,展现出典型的胞状结构特征。