|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effect of ultrasonic micro-forging treatment on microstructure and mechanical properties of GH3039 superalloy processed by directed energy deposition显示文摘In this work,ultrasonic micro-forging treatment(UMFT)was introduced to achieve homogeneous microstructure,reduce defects and improve mechanical properties of GH3039 superalloy cladding layer processed by directed energy deposition(DED).The microstructure,defects and mechanical properties of the cladding layers treated by UMFT with different ultrasonic powers(UIPs)were investigated.Results revealed a gradient structure as equiaxed grains distributed at the top,a columnar-to-equiaxed transition(CET)region that mixed of columnar dendrites and equiaxed grains distributed at the middle and columnar dendrites at the bottom of the cladding layer was formed.After UMFT,the proportion of equiaxed grains was increased,the average size of equiaxed grains was refined to 10μm from 16μm,the orientation of grains was more uniform and the phases enriched of Al,Ti,C,Nb and Mo were precipitated.The grain refinement can be attributed to the fracture of columnar dendrites induced by the ultrasonic vibration during solidification.Besides,the porosity of the cladding layer was reduced after UMFT.The microhardness of the cladding layers exhibited a depth-dependent gradient at the top region.The microhardness of the top surface was the highest and showed an increasing trend with the increase of UIP.The microhardness of different grain morphologies exhibited no substantial difference.However,due to grain refinement and precipitation of strengthening phase induced by UMFT,the microhadness of some local locations were improved.These results indicated UMFT has a significant effect on improving the microstructure,defects and mechanical properties of the deposited cladding layer. | Qingqing Li Yong Zhang Jie Chen Bugao Guo Weicheng Wang Yuhai Jing Yong Liu | 2021 | Journal of Materials Science & Technology2021，，11： | 4 |
| 2 | A deterministic FE contact analysis of 3D rough surfaces with textures and comparison with classic statistical contact models显示文摘Accurate contact calculations of real rough surfaces are fundamental but complicated. The model-based methods are convenient and straightforward. But these methods ignore some factors and may lead to less accurate results. This is especially true when considering multi-scale topographic features of engineering rough surfaces. Based on artificially generated rough surfaces, the deterministic contact analysis of two 3D rough surfaces is conducted by the finite element method(FEM). The calculations show that when the separation between surfaces reduces, results of classic model-based methods are quite different from those of this study, especially when the roughness distribution and textures are considered. As friction pairs are working under increasing harsh conditions, the accurate contact calculation in this paper will be of great significance. | ZHANG Rui MENG XiangHui LYU BuGao SUN Kai | 2021 | Science China(Technological Sciences)2021，64，2： | 2 |
| 3 | Stereovision tot Three - Dimensional Measurements of Fabric Pilling 显示文摘 | XU Bugao YU Wumng WANG RongWu | 2011 | Textile Research Journal2011，81，20： | 1 |
| 4 | A real-time 3D scanning system for pavement distortion inspection显示文摘 | Li Qingguang Yao Ming Yao Xun Xu Bugao | 2010 | Measurement Science and Technology2010，21，1： | 1 |
| 5 | A portable stereo vision system for whole body surface imaging显示文摘 | Wurong Yu Bugao Xu | 2009 | Image and Vision Computing2009，，4： | 1 |
| 6 | Fabric Wrinkle Evaluation Using Laser Triangulation and Neural Network Classifier显示文摘 | Jie Su Bugao Xu | | 0，，10： | 1 |
| 7 | Elasticity of woven fabrics made of PIT/PET bicomponent filaments 显示文摘 | Jin Luo Fumei Wang Bugao Xu | 2011 | Textile Research Journal2011，81，8： | 1 |
| 8 | An overview of application of image analysis to objectively evaluate fabric appearance 显示文摘 | BUGAO XU | 1996 | Textile Chemist and Colorist1996，28，3： | 1 |
| 9 | Evaluation of fabric smoothness appearance using a laser profilometer显示文摘 | BUGAO XU CUMINATO D F KEYES N M | 1998 | Textile Research Journal1998，68，12： | 1 |
| 10 | An Overview of Application of Image Analysis to Objectively Evaluate Fabric Appearance 显示文摘 | Bugao Xu | 1996 | Textile Chemist and Colorist1996，28，3： | 1 |
| 11 | Fabric wrinkle evaluation using laser triangulation and neural network classifier显示文摘 | JIE SU BUGAO XU | 1999 | Optical Engineering1999，38，10： | 1 |
| 12 | Fabric Wrinkle Evaluation Using Laser Triangulation and Neural Network Classifier显示文摘 | Jie Su Bugao Xu | 1999 | Optical Engineering1999，38，10： | 1 |
| 13 | Snippet counting for cotton length distribution measurement using image analysis显示文摘 | XU Weilin XU Bugao LI Wenbin | 2008 | Textile Research Journal2008，78，4： | 1 |
| 14 | Image analysis for cotton fibers, part I : longitudinal measurement 显示文摘 | HUANG Yong XU Bugao | 2002 | Textile Research Journal2002，72，8： | 1 |
| 15 | Separation of clustered fibers in cross-sectional images using image set theory显示文摘 | WAN Yah YAO Li XU Bugao | 2009 | Textile Research Journal2009，79，18： | 1 |
| 16 | Automatic segmenting and measurement on scanned human body 显示文摘 | ZHONG Yueqi XU Bugao | 2006 | International Journal of Clothing Science and Technology2006，18，1： | 1 |
| 17 | Image analysis for cotton fibers, part Ⅱ: cross-sectional measurement 显示文摘 | XU Bugao HUANG Yong | 2004 | Textile Research Journal2004，74，5： | 1 |
| 18 | Automatic segmentation of fiber cross sections by dual thresholding 显示文摘 | Wan Yan Yao Li Xu Bugao | 2012 | J Eng Fiber Fabr2012，7，1： | 1 |
| 19 | A Simplified pulse-coupled neural network for adaptive segmentation of fabfic defects显示文摘 | Meihong Shi Shoushan Jiang Huiran Wang Bugao Xu | 2009 | Machine Vision and Applications2009，20，： | 1 |
| 20 | Automatic inspection of pavement cracking distress显示文摘 | HUANG Yaxiong XU Bugao | 2006 | Journal of Electronic Imaging2006，15，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员