人工晶体学报, 2015, 44(1): 243-249.
氢原子在过渡金属修饰的Mg(0001)面扩散的第一性原理研究
腊明 1, , 陈昌东 <{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"建立了激光快速成形过程中气/粉两相流送粉、激光熔覆成形温度场及粉末与熔池交互作用联合模型。采用有限单元生死技术模拟了熔覆层的沉积及熔池形成和自由界面形状演化，根据界面温度与粉末粒子动量损失模拟熔池对粒子的捕捉以及工件对粉末的反射，并采用朗格拉日方法实现了对粉末颗粒的跟踪。在此基础上，模拟了激光快速成形过程中316L不锈钢粉末、激光与熔池的交互作用过程，计算结果与实验相吻合。","authors":[{"authorName":"贾文鹏","id":"4e027a74-5e86-4c48-9f19-2deac0060a1b","originalAuthorName":"贾文鹏"},{"authorName":"陈静","id":"0a3fbe84-1ad4-42e9-9a95-3963f0769980","originalAuthorName":"陈静"},{"authorName":"林鑫","id":"fbfd7ba0-3053-42a7-ab80-62bd17f17bed","originalAuthorName":"林鑫"},{"authorName":"钟诚文","id":"c5eb4391-2126-495b-bff4-7a7f0ede33ad","originalAuthorName":"钟诚文"},{"authorName":"黄卫东","id":"b627aa19-0985-4e82-9c9f-5c64ba133643","originalAuthorName":"黄卫东"}],"categoryName":"|","doi":"","fpage":"546","id":"7a472951-052c-49ba-8405-ffa15314261d","issue":"5","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"2615cbdb-29aa-49a8-8a4d-15b7e015c697","keyword":"激光快速成形","originalKeyword":"激光快速成形"},{"id":"af50eca1-3849-4fb9-b2a9-dec34ca7ce4d","keyword":"melting pool","originalKeyword":"melting pool"},{"id":"746a3971-fcc3-4236-9f0d-9250fc8d5767","keyword":"interaction","originalKeyword":"interaction"}],"language":"zh","publisherId":"0412-1961_2007_5_14","title":"激光快速成形激光、粉末与熔池交互数值模拟","volume":"43","year":"2007"},{"abstractinfo":"建立了空心叶片激光快速成形过程温度场瞬态有限元数值模型,模拟了TC4钛合金空心叶片激光快速成形过程的温度场演变过程.结果表明:空心叶片激光快速成形温度场随熔池的移动及凝固和空心叶片逐层连续叠加沉积而动态演化.开始阶段,熔池较小,冷却速率较大(-1735℃/s左右),温度梯度较高(8.34×105℃/m左右),随着熔覆高度的增加,熔化区扩大,熔池冷却速率减小,温度梯度降低,3/4叶片高度处熔池重熔深度大于上两层熔覆层高度,熔池冷却速率为-438℃/s,熔池温度梯度为3.67×105℃/m,成形结束时,激光快速成形空心叶片温度沿Z轴方向呈梯度分布,基座内温度沿Z轴方向上升较慢,温度梯度为5×105℃/m,而从叶片根部到其顶部温度上升较快,温度梯度为2.6×105℃/m,到达叶片顶部温度为1542℃左右,表明虽然随熔覆高度的增加成形叶片表面换热作用加强,但整体散热方向没变,仍是从上至下,从熔池到基座.","authors":[{"authorName":"贾文鹏","id":"f9e5b8c6-7628-45b8-bf65-7c2ecb7e9e70","originalAuthorName":"贾文鹏"},{"authorName":"林鑫","id":"94c1df27-1b3a-48c3-b6b7-c32f81e82cea","originalAuthorName":"林鑫"},{"authorName":"谭华","id":"2cd08d40-79b7-4c0f-b274-fdf539933ba4","originalAuthorName":"谭华"},{"authorName":"杨海欧","id":"1f85904b-3e73-470a-999f-b25fb33f9e85","originalAuthorName":"杨海欧"},{"authorName":"钟诚文","id":"8703a5d3-0314-417d-b8e8-f84e865b8fbe","originalAuthorName":"钟诚文"},{"authorName":"黄卫东","id":"1f4e8bb2-1af6-4ee9-bed4-ef2df2ef4746","originalAuthorName":"黄卫东"}],"doi":"","fpage":"1193","id":"fd6877d4-17c9-4e17-b377-e212de551672","issue":"7","journal":{"abbrevTitle":"XYJSCLYGC","coverImgSrc":"journal/img/cover/XYJSCLYGC.jpg","id":"69","issnPpub":"1002-185X","publisherId":"XYJSCLYGC","title":"稀有金属材料与工程"},"keywords":[{"id":"778a345b-fb4f-4110-aae7-d3b83135cb21","keyword":"TC4合金","originalKeyword":"TC4合金"},{"id":"0e266a97-f94a-4faf-bc63-fdc2bf6ec10f","keyword":"激光快速成形","originalKeyword":"激光快速成形"},{"id":"03e13565-d465-492d-b4df-f13e803dff7c","keyword":"空心叶片","originalKeyword":"空心叶片"},{"id":"c55b1063-a293-4c83-8d9a-e3fce19a7615","keyword":"温度场","originalKeyword":"温度场"}],"language":"zh","publisherId":"xyjsclygc200707015","title":"TC4钛合金空心叶片激光快速成形过程温度场数值模拟","volume":"36","year":"2007"},{"abstractinfo":"建立了描述激光快速成形过程中气/粉两相流送粉、粉末与熔池交互作用及激光熔覆成形温度场的联合模型.采用有限单元生死技术模拟了熔池形成和自由界面形状演化及熔覆层的沉积过程:根据界面温度与粉末粒子动量损失状况模拟了熔池对粒子的捕捉以及工件对粉末的反射,并采用Lagrangian粒子追踪模型实现了对粉末颗粒的跟踪.在此基础上,模拟了激光快速成形过程中316L不锈钢粉末、激光与熔池的交互作用过程.计算结果与实验结果吻合.","authors":[{"authorName":"贾文鹏","id":"a53d77d6-f823-48ba-9bfe-7c1a6d3d57d0","originalAuthorName":"贾文鹏"},{"authorName":"陈静","id":"1ee2d88f-9d15-4109-89b5-c47a9648d1cc","originalAuthorName":"陈静"},{"authorName":"林鑫","id":"c1166599-8731-4dae-937f-12563bc8af13","originalAuthorName":"林鑫"},{"authorName":"钟诚文","id":"d34023f1-6334-4266-aa3b-b8416303fb14","originalAuthorName":"钟诚文"},{"authorName":"黄卫东","id":"e7726dfd-1162-4db3-9c50-fb5bcdd587f0","originalAuthorName":"黄卫东"}],"doi":"10.3321/j.issn:0412-1961.2007.05.018","fpage":"546","id":"e8d3e0cb-3a5a-4191-8153-24fbce7d083d","issue":"5","journal":{"abbrevTitle":"JSXB","coverImgSrc":"journal/img/cover/JSXB.jpg","id":"48","issnPpub":"0412-1961","publisherId":"JSXB","title":"金属学报"},"keywords":[{"id":"92650b31-7b24-4a8a-b4be-353b2897870c","keyword":"激光快速成形","originalKeyword":"激光快速成形"},{"id":"94e165fe-3429-44ed-a50d-0ea612794d56","keyword":"气/粉两相流场","originalKeyword":"气/粉两相流场"},{"id":"ae52db72-2af2-491e-bf45-de41d1ccff25","keyword":"熔池","originalKeyword":"熔池"},{"id":"d325ca39-9189-49cd-8745-21e0755d5af4","keyword":"交互作用","originalKeyword":"交互作用"}],"language":"zh","publisherId":"jsxb200705018","title":"激光快速成形过程中粉末与熔池交互作用的数值模拟","volume":"43","year":"2007"},{"abstractinfo":"以很长半衰期(42×109 a)的β- 衰变的187Re-187Os核对作为大尺度的宇宙核钟来量度宇宙的年纪, 是近代天文学与核物理学相结合的又一典范. 这种宇宙时钟是利用裸核187Re与它的衰变子体187Os同位素在共生矿中天然含量的比值来测定时间的. 利用187Re裸核的半衰期通过核物理计算可对中性187Re的半衰期进行修定. ","authors":[{"authorName":"戴光曦","id":"3b3acd4b-8c94-42c4-8606-b24527ec19ac","originalAuthorName":"戴光曦"},{"authorName":"孙志虹","id":"b3356aad-de72-41bb-9942-36b85789b8d0","originalAuthorName":"孙志虹"}],"doi":"10.3969/j.issn.1007-4627.2001.03.006","fpage":"156","id":"0bad3373-d2ea-49dd-9a57-a936e9b6beb8","issue":"3","journal":{"abbrevTitle":"YZHWLPL","coverImgSrc":"journal/img/cover/YZHWLPL.jpg","id":"78","issnPpub":"1007-4627","publisherId":"YZHWLPL","title":"原子核物理评论 "},"keywords":[{"id":"a740148b-a590-40fe-bd3d-dd77e0b6527e","keyword":"宇宙核钟","originalKeyword":"宇宙核钟"},{"id":"c71eb820-a82b-4d8f-8bbf-db0cb9ddec81","keyword":"哈勃常数","originalKeyword":"哈勃常数"},{"id":"717765fc-ad90-4f72-ac05-f748451911b7","keyword":"退行速度","originalKeyword":"退行速度"},{"id":"2c15d62f-ca68-49f1-a8fa-a542f011b894","keyword":"中性/裸核187Re","originalKeyword":"中性/裸核187Re"},{"id":"da9b89c6-ca0e-45a0-a5ac-b7a45ca77041","keyword":"同位素的天然含量","originalKeyword":"同位素的天然含量"},{"id":"944039ab-47b4-462b-aa38-5606918359e9","keyword":"大爆炸","originalKeyword":"大爆炸"}],"language":"zh","publisherId":"yzhwlpl200103006","title":"宇宙核钟","volume":"18","year":"2001"},{"abstractinfo":"从动力学角度,采用离散单元法研究炉料颗粒的受力和运动,建立高炉无钟炉顶布料数值计算模型,模拟无钟炉顶布料过程和料面形状.模拟与实测对比表明,两者基本吻合,证明离散单元法在高炉无钟布料应用中可行,并为高炉无钟炉顶布料的机理研究开辟了一条新的途径.","authors":[{"authorName":"林成城","id":"028ddcae-af9a-439f-9cfa-21a3f9b32313","originalAuthorName":"林成城"},{"authorName":"杜鹤桂","id":"324c03df-e3f7-4648-b410-6daf921a1cdc","originalAuthorName":"杜鹤桂"}],"doi":"","fpage":"0","id":"72cbbc8b-bde6-4522-8fb9-62550f00472a","issue":"3","journal":{"abbrevTitle":"GT","coverImgSrc":"journal/img/cover/GT.jpg","id":"27","issnPpub":"0449-749X","publisherId":"GT","title":"钢铁"},"keywords":[{"id":"a6f6a124-3904-4d51-aa8d-aeb3659e5f39","keyword":"离散单元法","originalKeyword":"离散单元法"},{"id":"fd6036eb-33fa-48fc-b97d-e896ebbb340c","keyword":"无钟炉顶","originalKeyword":"无钟炉顶"},{"id":"4ef436f1-2114-4928-9c33-dc75772b5dda","keyword":"布料","originalKeyword":"布料"},{"id":"b9239681-25ae-41fe-b04c-7d665c8a8139","keyword":"料面形状","originalKeyword":"料面形状"},{"id":"44900c0d-e5ec-40aa-b524-2dfca4fe2547","keyword":"数值模拟","originalKeyword":"数值模拟"}],"language":"zh","publisherId":"gt199803002","title":"离散单元法高炉无钟炉顶布料模拟研究","volume":"33","year":"1998"},{"abstractinfo":"并罐式无钟炉顶的布料操作会产生蛇形偏析,形成不均匀的料面形状,导致料面透气性调节失控的问题.通过开炉布料料面形状的测试结果可知,并罐式无钟炉顶料面中心与高炉中心不重合,料面中心发生偏移.为了研究无钟布料过程中的料面分布情况,通过建立数学模型,计算炉料颗粒在高炉料面周向上的落点分布,根据落点分布得到料面对称中心位置,并将计算结果与开炉料面形状测试结果对比.根据分析计算结果,从理论出发,提出减小布料过程料流偏析的措施和建议.","authors":[{"authorName":"滕召杰","id":"ef87cffa-8233-4ab9-ad9b-df4300476a03","originalAuthorName":"滕召杰"},{"authorName":"程树森","id":"7b3bce1d-4727-4b73-8896-c762a7e6b938","originalAuthorName":"程树森"},{"authorName":"赵国磊","id":"ae123498-b9ec-4193-ad7e-956499094ce7","originalAuthorName":"赵国磊"}],"doi":"","fpage":"5","id":"83f812ed-40d4-4cdb-9595-cb6a43cb0027","issue":"6","journal":{"abbrevTitle":"GT","coverImgSrc":"journal/img/cover/GT.jpg","id":"27","issnPpub":"0449-749X","publisherId":"GT","title":"钢铁"},"keywords":[{"id":"9eef5a70-28ec-4fc2-8f5d-d29d7ee3259b","keyword":"并罐式","originalKeyword":"并罐式"},{"id":"e294b382-29a3-4c58-bfbc-fb15b4c376ff","keyword":"布料操作","originalKeyword":"布料操作"},{"id":"51974729-1eaa-413b-877f-168cbe3b7f11","keyword":"炉料偏析","originalKeyword":"炉料偏析"},{"id":"90748970-363e-4c26-a702-d8082989a208","keyword":"落点","originalKeyword":"落点"}],"language":"zh","publisherId":"gtyjxb201406002","title":"并罐式无钟炉顶布料料面中心研究","volume":"26","year":"2014"},{"abstractinfo":"济钢1 750 m3高炉采用串罐无料钟炉顶布料系统.建立了布料模型,并在高炉生产中不断验证,逐步消化和掌握了无料钟技术,摸索出一系列无料钟炉顶布料的相关规律;建立了布料矩阵调节的基本准则,以\"稳\"为前提,以\"平台漏斗\"理论为依据,充分发挥了布料矩阵技术优势,确保高炉稳定顺行.研究结果表明:焦平台一旦确定,靠微调矿石矩阵可以调整煤气流的合理分布,达到维持矿焦比合理分布的控制目标.通过布料矩阵的不断优化,使高炉的顺行状况改善,高炉的利用系数达到2.35 t/(m3·d).","authors":[{"authorName":"李传辉","id":"dfa33d81-a8ae-46d1-b85b-be2438068ebd","originalAuthorName":"李传辉"},{"authorName":"安铭","id":"677a2f42-1411-4c3f-9b82-cc61b0985620","originalAuthorName":"安铭"},{"authorName":"高征铠","id":"7e7e1c72-397f-437e-8454-f0100ffff4bc","originalAuthorName":"高征铠"},{"authorName":"戴建华","id":"8f67c47e-8918-41e4-8e28-7d9182525fc4","originalAuthorName":"戴建华"}],"doi":"","fpage":"6","id":"d0acc839-9040-4391-8886-7c91a44f23a6","issue":"5","journal":{"abbrevTitle":"GT","coverImgSrc":"journal/img/cover/GT.jpg","id":"27","issnPpub":"0449-749X","publisherId":"GT","title":"钢铁"},"keywords":[{"id":"9a5220bd-1433-4b0a-b064-fbb0efc0434f","keyword":"高炉","originalKeyword":"高炉"},{"id":"93769399-c042-473e-b088-6eaca773f960","keyword":"无料钟炉顶","originalKeyword":"无料钟炉顶"},{"id":"ef6e26df-0e71-4e04-8bba-bd1f01551cea","keyword":"布料矩阵","originalKeyword":"布料矩阵"},{"id":"1ae7033d-e689-415e-8f65-40701f0be3c0","keyword":"焦平台","originalKeyword":"焦平台"}],"language":"zh","publisherId":"gt200605002","title":"高炉无料钟炉顶布料规律探索与实践","volume":"41","year":"2006"},{"abstractinfo":"为提高无钟高炉的布料精度，提出了一种基于粒子群算法的环形布料优化方法。在分析环形布料工艺特点的基础上，按控制方法将环形布料分为常规多环布料和步进式同心圆布料，以料面形状误差为控制目标建立了环形布料的优化控制数学模型，并设计了粒子群算法进行优化求解。最后将优化模型应用到2580 m3无钟高炉，利用该优化模型分析了环形布料工艺与布料精度之间的关系。计算结果表明：溜槽倾角档位数量的增加有利于提高常规多环布料的布料精度，但同时导致布料优化控制复杂化，步进式同心圆布料的布料精度高于任意有限多个溜槽倾角档位的常规多环布料，适合充分发挥无钟炉顶布料灵活的优势，实现期望的炉料分布。","authors":[{"authorName":"马财生","id":"88f9ef02-68ba-423a-8d85-ffff4688617e","originalAuthorName":"马财生"},{"authorName":"任廷志","id":"efa5fea4-9b8a-4e2d-8e75-8c9fb49acda0","originalAuthorName":"任廷志"},{"authorName":"杨二旭","id":"6fd4995a-8124-47b2-8515-bfa19dc940a5","originalAuthorName":"杨二旭"}],"doi":"10.13228/j.boyuan.issn1001-0963.20160012","fpage":"15","id":"8b208d66-205b-49e9-9ffe-53dc7afb5524","issue":"12","journal":{"abbrevTitle":"GTYJXB","coverImgSrc":"journal/img/cover/GTYJXB.jpg","id":"30","issnPpub":"1001-0963","publisherId":"GTYJXB","title":"钢铁研究学报"},"keywords":[{"id":"b75d5518-f166-4244-9160-d16c5d6c04bf","keyword":"无钟炉顶","originalKeyword":"无钟炉顶"},{"id":"fd25ff37-a005-4068-aad5-090b08ba367e","keyword":"环形布料","originalKeyword":"环形布料"},{"id":"de7756d1-131b-460d-a29f-cfd26af17f2f","keyword":"优化模型","originalKeyword":"优化模型"},{"id":"d07349df-e073-4106-9df2-2230b4c68bab","keyword":"布料精度","originalKeyword":"布料精度"},{"id":"25fefd07-fc4a-44a0-b470-6cd12402daf1","keyword":"粒子群算法","originalKeyword":"粒子群算法"}],"language":"zh","publisherId":"gtyjxb201612004","title":"无钟高炉环形布料优化及布料精度","volume":"28","year":"2016"},{"abstractinfo":"攀钢炼铁厂利用高炉更换大、小钟机会详细分析了装料设备使用寿命短的问题,并循序渐进地、有重点地分别加以改造,再进一步对大钟及大钟斗进行改进,以提高装料设备使用寿命,为高炉稳定高产奠定了基础.","authors":[{"authorName":"薛文坦","id":"8577df60-39be-4c5a-a84d-7ae6386d8d12","originalAuthorName":"薛文坦"},{"authorName":"刘树芳","id":"8b8d5e1f-9f7c-4b19-98ca-b55600359cee","originalAuthorName":"刘树芳"}],"doi":"10.3969/j.issn.1001-1447.2001.05.003","fpage":"11","id":"dab68524-ca24-4bf7-b1fa-cba05c1123f0","issue":"5","journal":{"abbrevTitle":"GTYJ","coverImgSrc":"journal/img/cover/GTYJ.jpg","id":"29","issnPpub":"1001-1447","publisherId":"GTYJ","title":"钢铁研究"},"keywords":[{"id":"e9a10fba-1777-480a-a57a-d222a65e6493","keyword":"装料设备","originalKeyword":"装料设备"},{"id":"939180c5-72f2-45bd-adeb-dd3be19104f5","keyword":"长寿化","originalKeyword":"长寿化"},{"id":"1f64f797-de0c-4aff-9f33-ec9f37222ae8","keyword":"大钟","originalKeyword":"大钟"},{"id":"2b518669-e3a2-46b9-9b88-350633a005a9","keyword":"小钟","originalKeyword":"小钟"}],"language":"zh","publisherId":"gtyj200105003","title":"攀钢双钟炉顶装料设备长寿化的改造","volume":"","year":"2001"},{"abstractinfo":"结合无钟高炉布料的主要规律，开发出高炉布料模型。该模型有以下主要特点：炉料出下料罐的运动为“烟道流”；原始料面假设条件的改进；料面形状多段线性化处理；料面下降分为二部分对新料面修正。利用该模型可以求解料面形状，并计算炉料的矿焦比（O/C）。","authors":[{"authorName":"于要伟","id":"e4451db9-2ed9-46ea-81f2-049e96f694ea","originalAuthorName":"于要伟"},{"authorName":"白晨光","id":"cc3da566-ece8-4fe3-9d5c-60de6e28aae6","originalAuthorName":"白晨光"},{"authorName":"梁栋","id":"ef19f7db-ac50-4a0a-a44c-7a061c4dfdd8","originalAuthorName":"梁栋"},{"authorName":"夏锋","id":"1bdcf848-ad3f-4c01-87af-e8fb0cc9354a","originalAuthorName":"夏锋"},{"authorName":"牛文娟","id":"3860a4d4-348a-42c9-bfdd-b5d264b24527","originalAuthorName":"牛文娟"}],"categoryName":"|","doi":"","fpage":"26","id":"7283e1bd-0e7b-4de9-b725-25bf45ba84f0","issue":"11","journal":{"abbrevTitle":"GT","coverImgSrc":"journal/img/cover/GT.jpg","id":"27","issnPpub":"0449-749X","publisherId":"GT","title":"钢铁"},"keywords":[{"id":"aaddcf9c-7a2f-4c2b-b011-21b2869c8e77","keyword":"高炉;布料模型;布料溜槽","originalKeyword":"高炉;布料模型;布料溜槽"}],"language":"zh","publisherId":"0449-749X_2008_11_15","title":"无钟高炉布料数学模型的研究","volume":"43","year":"2008"}],"totalpage":33,"totalrecord":329}