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| 1 | Multi-scale defects in powder-based additively manufactured metals and alloys显示文摘Defect formation is a critical challenge for powder-based metal additive manufacturing(AM).Current understanding on the three important issues including formation mechanism,influence and control method of metal AM defects should be updated.In this review paper,multi-scale defects in AMed metals and alloys are identified and for the first time classified into three categories,including geometry related,surface integrity related and microstructural defects.In particular,the microstructural defects are further divided into internal cracks and pores,textured columnar grains,compositional defects and dislocation cells.The root causes of the multi-scale defects are discussed.The key factors that affect the defect formation are identified and analyzed.The detection methods and modeling of the multi-scale defects are briefly introduced.The effects of the multi-scale defects on the mechanical properties especially for tensile properties and fatigue performance of AMed metallic components are reviewed.Various control and mitigation methods for the corresponding defects,include process parameter control,post processing,alloy design and hybrid AM techniques,are summarized and discussed.From research aspect,current research gaps and future prospects from three important aspects of the multi-scale AM defects are identified and delineated. | J.Fu H.Li X.Song M.W.Fu | 2022 | Journal of Materials Science & Technology2022，，27： | 8 |
| 2 | 云南洱海现代沉积研究(英文)显示文摘洱海是位于云南省境内较大的但相对较浅的断陷湖泊(水深小于20m)根据1990-1993年对该湖现代沉积的研究,结果表明,湖泊沉积物主要来自西部相对高2000m以上的山地,东部为低矮石灰岩山地,物源较少,南北两条入湖河流亦是重要的物源供应区.湖区沉积物主要是由粉砂质粘土组成,来自山地的粗碎屑物质则大量的堆积于此地,三角洲、扇三角洲及滨湖地带,沉积速率在过去 13000年中平均为0.2cm a-1,相当于全湖平均每年堆积约600 t a-1,这个量也相当于 1992年 2月湖中悬浮物总量.这也表明丰富的陆源供给(雨季降雨,植被破坏和地震等),并说明了持续浅水湖泊的存在.湖泊沉积作用也受到内部因素影响而复杂化,如湖流作用使沉积物重新分布并扩展至整个湖底在现代沉积物中,水下滑坡和滑塌尚少见.对沉积物化学分析表明,其反映了周边岩石和土壤组成,包括生物成因的成份(主要是植硅石).沉积物微量元素相对较丰,可能系土壤渗漏、污染或细粒沉积物携带所致. | D.Eisma 孙顺才 X.Song E.Thomasse | 2000 | 湖泊科学2000，12，1： | 6 |
| 3 | Microemulsion mediated hydrothermal synthesis and characterization of zircontype LaVO4 nanowires显示文摘 | W.Fan X.Song S.Sun | | 0，，01： | 1 |
| 4 | 查看详情显示文摘 | Y. Huang W. Ho Z. Ai X.Song | | 0，，： | 1 |
| 5 | Constraints on dark energy models including gamma ray bursts显示文摘 | H.Li X.Song Y.Li S.Wei | | 0，，4： | 1 |
| 6 | Optimal harvesting and stability for a two species competitive system with stage-structure显示文摘 | X.Song L.Chen | | 0，，： | 1 |
| 7 | Technique for Preparing Ultrafine Nanocrystalline Bulk Material of Pure Rare‐Earth Metals显示文摘 | X.Song J.Zhang M.Yue E.Li H.Zeng N.Lu M.Zhou T.Zuo | 2006 | Adv Mater2006，，9： | 1 |
| 8 | Technique for Preparing Ultrafine Nanocrystalline Bulk Material of Pure Rare‐Earth Metals显示文摘 | X.Song J.Zhang M.Yue E.Li H.Zeng N.Lu M.Zhou T.Zuo | 2006 | Adv Mater2006，，9： | 1 |
| 9 | 查看详情显示文摘 | Y. Huang W. Ho Z. Ai X.Song | | 0，，： | 1 |
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