Innovative technologies for powder metallurgy-based disk superalloys: Progress and proposal

来源 :Chinese Physics B | 被引量 : 0次 | 上传用户:stevenst
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Powder metallurgy(PM) superalloys are an important class of high temperature structural materials, key to the rotating components of aero engines. In the purview of the present challenges associated with PM superalloys, two novel approaches namely, powder preparation and the innovative spray-forming technique(for making turbine disk) are proposed and studied.Subsequently, advanced technologies like electrode-induction-melting gas atomization(EIGA), and spark-plasma discharge spheroidization(SPDS) are introduced, for ceramic-free superalloy powders. Presently, new processing routes are sought after for preparing finer and cleaner raw powders for disk superalloys. The progress of research in spray-formed PM superalloys is first summarized in detail. The spray-formed superalloy disks specifically exhibit excellent mechanical properties. This paper reviews the recent progress in innovative technologies for PM superalloys, with an emphasis on new ideas and approaches, central to the innovation driving techniques like powder processing and spray forming. Powder metallurgy (PM) superalloys are an important class of high temperature structural materials, key to the rotating components of aero engines. In the purview of the present challenges associated with PM superalloys, two novel approaches require, powder preparation and the innovative spray-forming techniques (for making turbine disk) are proposed and studied. Substituted, advanced technologies like electrode-induction-melting gas atomization (EIGA), and spark- plasma discharge spheroidization (SPDS) are presented, for ceramic-free superalloy powders. processing routes are sought after for preparing finer and cleaner raw powders for disk superalloys. The progress of research in spray-formed PM superalloys is first summarized in detail. The paper reviews the recent progress in innovative technologies for PM superalloys, with an emphasis on new ideas and approaches, central to the innovat ion driving techniques like powder processing and spray forming.
其他文献
按照传统观点和习惯做法,收文登记和案卷《卷内文件目录》填写是两相分离的.一是两者分类不一致.收文登记,一般按照来文机关(单位)分类登记,有的笼统地分成中央、省、市等几
齐鸣在《沈阳档案》93/1撰文提出课题如下:新型载体对档案信息保存带来的影响是由这些载体自身的特点决定的。主要表现在以下几个方面:几乎所有的磁性载体中的信息都极容易
中国共产党优秀党员、中国人民大学档案学院社科情报教研室主任、副教授,中国社科情报学会理事赵惠丰同志,因病医治无效,于1990年4月14日3时40分在北京逝世,终年59岁。赵惠
随着电子计算机技术的普及与应用,为各行各业服务的实用计算机软件频频涌现,其中有些获得国家、军队科技进步奖,有的获得专利权,这些软件成果必将作为科研档案归档保存起来
为了推断高压条件下气体在液体金属中的存在形态和运动形态,通过水模拟试验研究压强、底吹流量对气泡形状、尺寸、数量及“渣眼”尺寸的影响,结果表明:随着底吹流量增加,高压
国际档案理事会东南亚地区分会利用在新加坡召开年会的机会,于1991年11月6日至8日举办了建筑与制图文件管理国际研讨会.参加这次国际研讨会的代表共有33名,分别来自汉莱、印
提出一种采用润湿球磨和硫化浮选相结合的综合回收烧结机静电除尘灰的新方法。采用粉末润湿性分析、X射线衍射(XRD)、扫描电子显微镜(SEM)和矿物参数自动定量分析系统(MLA)研
在我们的阅读视野里,近两年,有幸接触到三、四个省的五、六个县的新县志,以史明鉴,其中的地理沿革,工农商经济、政治、军事、科教文等,传达的大量信息,都催人振奋,促人思考,
“通用型动态档案数据库微机管理系统”是国家档案局三项科技经费资助的研究项目.根据国家档案局对计算机应用于档案事业管理所提出的要求,我们向国家档案局提出和四川省档
随着改革开放的不断深入,社会主义市场经济体制的建立,档案工作也将面临新的形势,档案的宣传工作也应从以往自我循环的“小宣传”转向 With the continuous deepening of r