{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"采用光学显微镜、扫描电子显微镜以及Thermal-calc计算等方法分析了马氏体时效钢(C300)穿孔型等离子弧焊接(Keyhole-Plasma Arc Welding,K-PAW)过程中结晶裂纹的成因及形貌.研究认为,C300虽然具有良好的焊接性,但也会产生结晶裂纹.本试验条件下,影响高纯净C300产生结晶裂纹的主要因素是应变一温度增长速率,提高预热温度和增加线能量有利于降低结晶裂纹倾向.焊接热源对母材的预热作用有利于已形成结晶裂纹的逐步止裂.具有凸形表面的焊缝以及细小等轴晶的焊缝的结晶裂纹倾向较小.","authors":[{"authorName":"杨帅","id":"53e1caf5-52fc-4c5a-9fb6-5ab6e981d9cb","originalAuthorName":"杨帅"},{"authorName":"<span style=\"color:red\">彭</span>云","id":"36699c69-5e6b-4077-b191-07924062ea4d","originalAuthorName":"彭云"},{"authorName":"张晓牧","id":"9f7d722a-bb15-466d-b759-2f937f29cea7","originalAuthorName":"张晓牧"},{"authorName":"田志凌","id":"60f89499-950e-4d2c-82c9-4dc4291d2519","originalAuthorName":"田志凌"},{"authorName":"<span style=\"color:red\">彭</span><span style=\"color:red\">展</span><span style=\"color:red\">南</span>","id":"c245f69f-7365-4aca-b084-e783f8a23494","originalAuthorName":"彭展南"}],"doi":"","fpage":"68","id":"11f7733d-b060-47b6-9afd-50416f2762cf","issue":"6","journal":{"abbrevTitle":"YHCLGY","coverImgSrc":"journal/img/cover/YHCLGY.jpg","id":"77","issnPpub":"1007-2330","publisherId":"YHCLGY","title":"宇航材料工艺   "},"keywords":[{"id":"8c60efd7-33e7-485e-a740-9ee8504ebb7c","keyword":"马氏体时效钢","originalKeyword":"马氏体时效钢"},{"id":"8a2819cf-c592-4d8f-8e69-ea9ae8fda67e","keyword":"等离子弧焊接","originalKeyword":"等离子弧焊接"},{"id":"0fd0ecb2-27bf-4a3c-bd89-cd4337d411ba","keyword":"结晶裂纹","originalKeyword":"结晶裂纹"},{"id":"7b27f872-1cef-46d9-857c-606869ecf45a","keyword":"临界应变速率","originalKeyword":"临界应变速率"}],"language":"zh","publisherId":"yhclgy201306013","title":"C300穿孔型等离子弧焊接焊缝结晶裂纹的研究","volume":"43","year":"2013"},{"abstractinfo":"采用穿孔型等离子弧(K-PAW)焊接方法对固溶态C300马氏体时效钢进行焊接,并采用光学显微镜、透射电子显微镜、扫描电子显微镜以及硬度仪等对焊接接头进行了组织观察和硬度分析.结果表明:采用K-PAW焊接可得到成形良好的焊接接头,但为了避免局部凹陷现象,应适当采用填充金属;焊接接头具有高度对称性,可分为焊缝区、固溶区(粗晶区和细晶区)、时效区以及母材区;焊缝金属呈倒喇叭状形貌;接头的硬度峰值出现在时效区,硬度曲线上水平区域的宽度取决于焊缝区与固溶区的宽度;焊缝、固溶区与母材的硬度基本相同;在时效区发现皲裂形貌和镍、钼、钛和钴元素含量的差异.","authors":[{"authorName":"杨帅","id":"62215d62-4058-4216-b518-eccfe947b91a","originalAuthorName":"杨帅"},{"authorName":"<span style=\"color:red\">彭</span>云","id":"0200e64b-323c-4d2b-8d3d-b1602e45ebb1","originalAuthorName":"彭云"},{"authorName":"张晓牧","id":"638b3fd5-9dd7-4e25-b707-d58606901a57","originalAuthorName":"张晓牧"},{"authorName":"<span style=\"color:red\">彭</span><span style=\"color:red\">展</span><span style=\"color:red\">南</span>","id":"786ffecc-81c5-496e-b812-81e5816f71bc","originalAuthorName":"彭展南"},{"authorName":"田志凌","id":"9a5a4853-e6fd-40d9-8bb3-b5dd68c22941","originalAuthorName":"田志凌"}],"doi":"","fpage":"1","id":"70cc0f42-3e48-4f08-ad8e-8d2ceb55379d","issue":"10","journal":{"abbrevTitle":"JXGCCL","coverImgSrc":"journal/img/cover/JXGCCL.jpg","id":"45","issnPpub":"1000-3738","publisherId":"JXGCCL","title":"机械工程材料"},"keywords":[{"id":"6a1f8867-0716-4f82-9cb5-951771d72b4d","keyword":"马氏体时效钢","originalKeyword":"马氏体时效钢"},{"id":"eb09070f-5b64-4909-821c-4d27664c9770","keyword":"等离子弧焊接","originalKeyword":"等离子弧焊接"},{"id":"7e267215-63e6-4a87-8700-dc835996939e","keyword":"组织","originalKeyword":"组织"},{"id":"2ef2c458-d0f7-484c-831c-967468707692","keyword":"硬度","originalKeyword":"硬度"},{"id":"79de7277-b590-4858-a54c-79cc5ce367e7","keyword":"焊缝形状","originalKeyword":"焊缝形状"}],"language":"zh","publisherId":"jxgccl201410001","title":"C300马氏体时效钢等离子弧焊接接头的组织与硬度","volume":"38","year":"2014"},{"abstractinfo":"采用光学显微镜、扫描电镜和能谱分析对马氏体时效钢(C300级)钨极氩弧焊焊缝中偏析的合金元素在不同温度固溶时均匀化情况进行了初步的计算和分析.研究认为C300钨极氩弧焊焊缝中主要偏析合金元素是Ni,Mo,Ti;焊缝经1200℃/1h AC处理可以获得成分均匀的马氏体;成分均匀的焊缝进行480℃/4h AC时效处理将不再产生逆转变奥氏体.","authors":[{"authorName":"杨帅","id":"8b20b79f-803a-4455-8dc3-aac2aa58ed47","originalAuthorName":"杨帅"},{"authorName":"<span style=\"color:red\">彭</span>云","id":"468f4d3c-c7b6-4893-b117-5a9286e34568","originalAuthorName":"彭云"},{"authorName":"张晓牧","id":"c7b93c3a-ef76-4e8a-b355-f61493075af2","originalAuthorName":"张晓牧"},{"authorName":"<span style=\"color:red\">彭</span><span style=\"color:red\">展</span><span style=\"color:red\">南</span>","id":"f300689f-4416-40fb-a754-08b38e52be88","originalAuthorName":"彭展南"},{"authorName":"田志凌","id":"bd316d29-717e-41bc-8364-4feae2de724a","originalAuthorName":"田志凌"}],"doi":"10.3969/j.issn.1005-5053.2014.1.003","fpage":"16","id":"fef0a695-7ad6-4929-bcc0-8628ce5ed448","issue":"1","journal":{"abbrevTitle":"HKCLXB","coverImgSrc":"journal/img/cover/HKCLXB.jpg","id":"41","issnPpub":"1005-5053","publisherId":"HKCLXB","title":"航空材料学报"},"keywords":[{"id":"c2c305db-ff53-4b94-a191-05a4dabf1e8c","keyword":"马氏体时效钢","originalKeyword":"马氏体时效钢"},{"id":"ff5804e8-a789-4b24-ab0a-d0278cc97f30","keyword":"焊缝","originalKeyword":"焊缝"},{"id":"5da5f364-972b-4d71-82d7-2574183130fc","keyword":"偏析","originalKeyword":"偏析"},{"id":"eebcfad2-89ad-4449-b030-492daed96739","keyword":"均匀化","originalKeyword":"均匀化"},{"id":"bf8cc124-de09-40fd-ac4e-f4b95255dbbb","keyword":"逆转变奥氏体","originalKeyword":"逆转变奥氏体"}],"language":"zh","publisherId":"hkclxb201401003","title":"固溶温度对C300钨极氩弧焊焊缝成分均匀化的影响","volume":"34","year":"2014"},{"abstractinfo":"<span style=\"color:red\">彭</span>宁阱是用于直接测量原子核质量的精确设备.为了保证<span style=\"color:red\">彭</span>宁阱的测量精度,需在阱中心产生精准的四极静电场,而四极静电场是通过对<span style=\"color:red\">彭</span>宁阱的核心电极施加合适的电压产生的.采用公式推导法和最小二乘法两种方法计算得到了LPT核心电极需加电压幅值.对于公式推导法,电压值完全从理论出发,经公式推导后计算得到;最小二乘法的出发点是使取样偏差的平方和最小,且通过仿真模拟考虑了电极的实际几何形状.由这两种方法得到的非四极项系数C4和C6,可用于估算因偏离理想四极电场所产生的实验误差.虽然这两种方法的出发点不同,但都可以在阱中心产生需要的四极电场.","authors":[{"authorName":"孙宇梁","id":"66a33298-bff6-4a8d-8e03-12dcbb5cddf6","originalAuthorName":"孙宇梁"},{"authorName":"王永生","id":"26342b6a-94dd-4fe0-8bdd-699936f3ffd6","originalAuthorName":"王永生"},{"authorName":"田玉林","id":"456dff8e-42d7-4330-a30c-cc4de1004b96","originalAuthorName":"田玉林"},{"authorName":"王均英","id":"3a15b361-f99c-444f-871b-8afc8d0506fc","originalAuthorName":"王均英"},{"authorName":"黄文学","id":"097fff8d-6a99-4d46-aecd-89b31976e0b5","originalAuthorName":"黄文学"}],"doi":"10.11804/NuclPhysRev.32.03.341","fpage":"341","id":"f7b275e0-25cc-46db-b247-d4791f844401","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":"555ccb15-cb30-45c6-8d11-50a2dcb08b7e","keyword":"<span style=\"color:red\">彭</span>宁阱","originalKeyword":"彭宁阱"},{"id":"45437d63-92ef-44a5-b2e4-1edc5c1b68a3","keyword":"质量测量","originalKeyword":"质量测量"},{"id":"1f413a8c-2165-4414-a6ef-aa88f4dd60eb","keyword":"四极电场","originalKeyword":"四极电场"},{"id":"cddd2ade-8f59-49b3-891e-7bd85113206c","keyword":"电极电压","originalKeyword":"电极电压"}],"language":"zh","publisherId":"yzhwlpl201503015","title":"兰州<span style=\"color:red\">彭</span>宁阱核心电极的最优电压幅值计算","volume":"32","year":"2015"},{"abstractinfo":"在合理的假设基础上,通过建立的<span style=\"color:red\">展</span>纱织物增强结构二维几何结构模型,预测<span style=\"color:red\">展</span>纱织物内纤维束屈曲状态,建立<span style=\"color:red\">展</span>纱织物复合材料的纤维体积分数的理论公式,分析纤维束屈曲率与纤维体积含量之间的关系.理论计算结果与实测值的比较,表明所提出的细观几何模型是合理的.","authors":[{"authorName":"李蓓蓓","id":"de12fe27-ad97-47b5-90d7-cd3d08677bb6","originalAuthorName":"李蓓蓓"},{"authorName":"李炜","id":"95ddfe1a-709a-4a8c-becc-10282b491d30","originalAuthorName":"李炜"}],"doi":"","fpage":"5","id":"0fbc70b1-4c18-4b16-9649-aeee74a3d962","issue":"8","journal":{"abbrevTitle":"BLGFHCL","coverImgSrc":"journal/img/cover/BLGFHCL.jpg","id":"6","issnPpub":"1003-0999","publisherId":"BLGFHCL","title":"玻璃钢/复合材料"},"keywords":[{"id":"49316b3d-6c50-4e99-a616-44b7c48506ec","keyword":"<span style=\"color:red\">展</span>纱","originalKeyword":"展纱"},{"id":"c952b93e-213c-4f17-bbcb-90142659c563","keyword":"几何结构","originalKeyword":"几何结构"},{"id":"b59dfcb1-16e9-4f78-8389-bf378ebd8029","keyword":"单元体","originalKeyword":"单元体"},{"id":"6fddfd51-405a-4f4d-a6d1-b750591ad30f","keyword":"屈曲","originalKeyword":"屈曲"},{"id":"b02d01cd-4d9b-46ea-be0e-a38ea4cbaf1b","keyword":"纤维体积分数","originalKeyword":"纤维体积分数"}],"language":"zh","publisherId":"blgfhcl201408001","title":"<span style=\"color:red\">展</span>纱织物细观几何模型","volume":"","year":"2014"},{"abstractinfo":"根据液晶动力学理论研究了π型液晶盒中从<span style=\"color:red\">展</span>曲到弯曲的转变过程和转变所需的最小电压.在低电压驱动情况下,具有非对称预倾角度的<span style=\"color:red\">展</span>曲结构转变为非对称状态;在高于转变电压的脉冲作用下,再转变成为弯曲结构.结果表明,转变电压随着锚定强度的增加而增加,随着表面黏滞系数的增加而增加,随着预倾角度的增加而减小.使用本文提出的方法得到的转变时间比其他方法要快得多,可以小于50 ms.","authors":[{"authorName":"姜丽","id":"e9e8672d-6c28-422b-b5b2-fe941bb19ad8","originalAuthorName":"姜丽"},{"authorName":"孙玉宝","id":"2bb900c2-a6f4-4545-87e7-38a803cdaf85","originalAuthorName":"孙玉宝"},{"authorName":"马红梅","id":"274310a5-ab86-4a11-b94b-1b11c4ae63a8","originalAuthorName":"马红梅"},{"authorName":"张志东","id":"94b3fd31-b63d-4e77-ab7b-2f4581b2eed9","originalAuthorName":"张志东"}],"doi":"10.3969/j.issn.1007-2780.2007.05.016","fpage":"583","id":"3eadd396-9f6a-43dc-9192-e715ef0ad22c","issue":"5","journal":{"abbrevTitle":"YJYXS","coverImgSrc":"journal/img/cover/YJYXS.jpg","id":"72","issnPpub":"1007-2780","publisherId":"YJYXS","title":"液晶与显示   "},"keywords":[{"id":"38b13514-9d0f-4c67-86c7-f4435d5152d3","keyword":"液晶","originalKeyword":"液晶"},{"id":"70986272-8e4e-4117-8aed-e489fc3d7a28","keyword":"π型盒","originalKeyword":"π型盒"},{"id":"e3dd8ec9-4c19-4c42-9b9b-82949fbbfccd","keyword":"转变电压","originalKeyword":"转变电压"},{"id":"f07d5083-7402-4c36-aa21-44191ed9c31e","keyword":"锚定强度","originalKeyword":"锚定强度"},{"id":"f3a4a916-6268-41b5-99bb-75da1a6e2cf8","keyword":"表面黏滞系数","originalKeyword":"表面黏滞系数"},{"id":"e8d8ec8c-4956-4322-b18b-626429b75851","keyword":"预倾角度","originalKeyword":"预倾角度"}],"language":"zh","publisherId":"yjyxs200705016","title":"π盒的<span style=\"color:red\">展</span>曲到弯曲形变","volume":"22","year":"2007"},{"abstractinfo":"为解决工程实际中按照已知条件构造可<span style=\"color:red\">展</span>面的问题,以微分几何学中单参数平面族包络理论为基础,提出了实现可<span style=\"color:red\">展</span>面的包络方法,即利用单参数平面族的包络来获得可<span style=\"color:red\">展</span>面,据此发展出按照已知可<span style=\"color:red\">展</span>面上一条曲线及可<span style=\"color:red\">展</span>面在该曲线上的法线构造可<span style=\"color:red\">展</span>面的方法.研究表明,该方法在按照已知条件设计可<span style=\"color:red\">展</span>的工程曲面方面具有创新性,操作简便,易于被工程所接受,将该方法应用于工程实际,解决了螺旋输送器的核心部件--铰龙的设计问题,使其在平面上的展开成为可能.\n","authors":[{"authorName":"杨继新","id":"28aeb7ea-d83d-4abd-a721-7d9aeb5c0f5b","originalAuthorName":"杨继新"},{"authorName":"肖正扬","id":"f96b1fad-5d13-416c-8727-38e3a64262bd","originalAuthorName":"肖正扬"},{"authorName":"王筱华","id":"9248ea3e-2b51-4cab-826c-d42e390ca179","originalAuthorName":"王筱华"},{"authorName":"丁天英","id":"d39c85bf-fd18-4b36-90bf-aab9775ce893","originalAuthorName":"丁天英"}],"doi":"10.3969/j.issn.1005-0299.2002.02.007","fpage":"140","id":"0e52b435-c719-4367-9e72-2221505443ae","issue":"2","journal":{"abbrevTitle":"CLKXYGY","coverImgSrc":"journal/img/cover/CLKXYGY.jpg","id":"14","issnPpub":"1005-0299","publisherId":"CLKXYGY","title":"材料科学与工艺"},"keywords":[{"id":"8a307f26-39d3-48a9-82c3-993556083c59","keyword":"可<span style=\"color:red\">展</span>面","originalKeyword":"可展面"},{"id":"d2a4146c-8b25-4ea1-a6e7-2bb4e0d9b72c","keyword":"设计","originalKeyword":"设计"},{"id":"563c68cb-089f-4431-81e8-a862e804e4e4","keyword":"包络面","originalKeyword":"包络面"}],"language":"zh","publisherId":"clkxygy200202007","title":"可<span style=\"color:red\">展</span>面的实现方法与应用","volume":"10","year":"2002"},{"abstractinfo":"介绍了<span style=\"color:red\">展</span>纤的定义以及<span style=\"color:red\">展</span>纤对高性能纤维纱线形态、纤维渗透特性、复合材料性能的影响;对纤维束展开宽度进行了理论计算,对比介绍了目前常用的热碾法、机械<span style=\"color:red\">展</span>纤法、超声波<span style=\"color:red\">展</span>纤、声波<span style=\"color:red\">展</span>纤法和气流喷射<span style=\"color:red\">展</span>纤法等5种<span style=\"color:red\">展</span>纤方法,并对5种<span style=\"color:red\">展</span>纤方法的设备与原理进行了详细的阐述,最后对高性能纤维<span style=\"color:red\">展</span>纤未来的发展进行了展望.","authors":[{"authorName":"钟文鑫","id":"524a77c5-5820-4eaf-8192-e59b0a3f157e","originalAuthorName":"钟文鑫"},{"authorName":"马丕波","id":"6cebcfd2-9a16-477e-acb8-3f0ed2322a9b","originalAuthorName":"马丕波"}],"doi":"","fpage":"80","id":"5d2a4f86-90c9-4b9e-903e-0ac94360331b","issue":"8","journal":{"abbrevTitle":"BLGFHCL","coverImgSrc":"journal/img/cover/BLGFHCL.jpg","id":"6","issnPpub":"1003-0999","publisherId":"BLGFHCL","title":"玻璃钢/复合材料"},"keywords":[{"id":"3ad11d1e-05ac-4aa0-a9a1-27cec2e98630","keyword":"<span style=\"color:red\">展</span>纤定义","originalKeyword":"展纤定义"},{"id":"0c5c796d-5fd2-493d-ab25-aaeaae619b90","keyword":"纤维束","originalKeyword":"纤维束"},{"id":"0bc55807-5c4a-446f-aafe-e781bbe7c290","keyword":"<span style=\"color:red\">展</span>纤方法","originalKeyword":"展纤方法"},{"id":"b20d46da-c857-4106-be6f-ba8e3e262a90","keyword":"<span style=\"color:red\">展</span>纤原理","originalKeyword":"展纤原理"}],"language":"zh","publisherId":"blgfhcl201508016","title":"高性能纤维束<span style=\"color:red\">展</span>纤技术的发展现状","volume":"","year":"2015"},{"abstractinfo":"为了使高炉操作者和管理者通过网络管理以及远程监控实时掌控高炉生产状况，通过计算机编程开发了适合<span style=\"color:red\">南</span>钢高炉生产的操作管理系统 。介绍了在现有技术条件下开发的<span 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