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morphology. This study proposes four-stage evolution process based on the shear stress-strain curve. During the shear process, coral sand particles slide and rotate within the interaction band, causing... the roughness of slabs is, the larger the shear stress is, the more obvious the contraction effect is and the more the particles break. Furthermore, the change in particle’s 3D morphology during......
morphology is cellular or globular. The eutectic transformation L→α-Mg+β-Mg17Al12 and microsegregation in conventionally solidified AZ61A alloy are suppressed to a great extent. The β-Mg17Al12 phases located... solidification microstructure dominantly consists of supersaturated α-Mg solid solution. The mechanical properties and fractographic analysis reveal that the fracture mechanism and corresponding morphology......
酸蚀法观察钢中夹杂物的三维形貌张立峰1,李树森2,王建伟2,佐祥均0(1.美国密苏里罗拉密苏里科技大学材料科学与工程系2.首钢迁钢公司,河北迁安 064400)摘 要:使用酸蚀法成功揭示了铝镇静钢中夹杂物的三维形貌和成分.酸蚀钢样品过程中,Al2O3夹杂物基本不与酸发生反应,只是样品基体与酸反应.短时间的酸蚀不会破坏夹杂物的成分.观察得到所研究的铝镇静钢中主要为粒径5~200μm的各种形貌的Al2O3夹杂物.本研究表明,酸蚀法是得到夹杂物三维形貌和成分的有效方法.关键词:酸蚀法； 非金属夹杂物； ......
Trans. Nonferrous Met. Soc. China 20(2010) s805-s810 Characterization on morphology evolution of primary phase in semisolid A356 under slightly electromagnetic stirring LIU Zheng (刘 ..., Beijing 100083, China Abstract: The effects of slight electromagnetic stirring on morphology of primary phase in semisolid A356......
An evaluation analysis method for corrosion morphology characterization based on Gaussian filter ZHANG Peng (张 鹏)1, GUO Bin (郭 斌)2, CHENG Shu-kang (程树康)3 1. School of Materials Science... that the corrosion characterization of copper in thermal flow system is pitting corrosion. The morphology characterizations of metal corrosion process can be described using the proposed surface model. The generation......
, due to the addition of alloying elements, the interface energy between γ-Fe and the copper-rich precipitation phase is reduced, so that the morphology of the copper-rich precipitation phase has... and experimental verification, it is determined that the main strengthening mechanism of the alloy is solid solution strengthening and precipitation strengthening. Key words: microstructure; morphology......
Study on Surface Morphology of GaN Growth by MOCVD on GaN/Si(111) Template Wang Junxi1,Zeng Yiping1,Liu Hongxin1,Li Jinmin1,Guo Lunchun1,Wang Xiaoliang1,Li Jianping1,Liu Zhe1,Hu Guoxin1 (1.Novel Materials Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China) Abstract:The surface morphology of GaN grown by MOCVD on GaN/Si template was studied. Rough......
碘化汞(α-HgI_2)晶体气相生长中的形貌转变研究 介万奇1,许岗2,李高宏2 (1.西北工业大学材料学院,西安,710072;2.西安工业大学材料与化工学院,西安,710032) 摘要:采用高纯HgI_2多晶原料,利用改进的静态升华法生长了α-HgI_2晶体.生长15天的晶体生长界面呈小平面,而生长29天的晶体生长界面呈椭圆形,表明α-HgI_2晶体气相生长中存在生长形貌转变的现象.形貌转变的原因可能是自由碘在生长界面富集和不同晶面生长速率差异所致.生长29天的晶体体积约为1.3cm~3,可能达到了该条件下的最大体积. 关键词:碘化汞; 气相生长; 形貌转变; mercuric iodide; vapor growth; morphology transition; [全文内容正在添加中] ......
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