检索结果-南通市图书馆

MICROSTRUCTURAL EVOLUTION AND co.TROL IN SUPERALLOY FORGINGS

Acta Metallurgica Sinica(English Letters) 1996年第6期9卷 437-442页

作者： R.Noel, D. Furrer, G. Shen and J. Lemsky(ladish co., Inc., P.O. Box 8902, Cudahy, WI 53110-8902, USA ladish co. Inc. Cudahy United States

Optimum properties of high temperature superalloys are derived from interactions of the co.position,thermomechanical deformation, and heat ***-base alloys co.tain a variety of alloying elements in a large number of co.binations to produce various desired effects. The general characteristics of any specific nickelbase superalloy is determined by *** co.trol of the microstructure in wrought processed superalloys can further influence the resultant co.ponent *** relationship between microstructure and properties is key in advanced design and manufacture of turbine engine co.ponents, and requires extensive alloy and process characterization to achieve desired *** forging methods have been developed and employed throughout the years to process superalloy *** forging, Press forging,and advanced isothermal press forging equipment and processes have been designed and manufactured to process speciality metals which often have very narrow processing *** processes have also been introduced into turbine engine applications,which result in a hybrid of resultant structures and *** such speciality,co.bination process is the ladish Iso co. process which utilizes isothermal forging and co.ventional forging to achieve unique properties not matched by any other single *** utilizes forging presses for co.ventional forging, hot-die forging and for isothermal forging, in addition to hammers and ring rolling mills for wrought *** wide range of equipment allows flexibility in process design and *** in temperature, strain and strain rate have been shown to significantly influence resultant grain sizes and *** are being developed to allow forging processes and specific forging parameters to be evaluated and optimized with regard to final microstructure before shop triale are required. Sophisticated finite element method (FEM) models are allowin

关键词： forging process modeling microstructure

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

THE ROLE OF NIOBIUM IN NICKEL-BASED SUPERALLOYS AND CHARACTERIZATION OF PM ALLOY EP741NP

引用

Acta Metallurgica Sinica(English Letters) 2005年第4期18卷 468-478页

作者： T. Carneiro J. Radavich D. Furrer Reference Metals co. Bridgeville PA 15017 USAMicro-Met Laboratories West Lafayette IN 47906 USALadish Co. Inc. Cudahy WI 53110 USA

The role of niobium in nickel-based superalloys is reviewed. The importance of niobium as a strengthener is discussed. New developments in nickel-based superalloys are also briefly mentioned, including some results that show improved resistance to sulfidation by niobium. Research results from a current program on the role of niobium in the Russian powder metallurgy alloy EP741NP are presented. Future research plans on the role of niobium in superalloys are also discussed.

关键词： niobium superalloy alloy EP741NP powder metallurgy superalloy,nickel-based superalloy disk material

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effect of Processing and co.position on the Structure and Properties of P/M EP741NP Type Alloys

引用

Chinese Journal of Aeronautics 2007年第2期20卷 97-106页

作者： John Radavich Tadeu Carneiro David Furrer Joseph Lemsky Anthony Banik Micro-Met Laboratories 209 North Street W. Lafayette IN 47906 USA Reference Metals co.pany 1000 Old Pond Road Bridgeville PA 15017 USA Rolls-Royce co.poration PO Box 420 S/C-W05 Indianapolis IN 46206 USA ladish co. Inc. PO Box 8902 Cudahy WI 53110 USA Special Metals 100 Industrial Lane Princeton KY 42445 USA

A study was carried out on the effects of processing and co.position on the structure and properties of P/M EP741NP type alloys. The objectives of this study were to understand the role of Hf in a P/M superalloy co.taining high niobium used in aircraft engines and to determine the effects of extrusion and forging the powders as co.trasted to HIPing （hot isostatic pressing） only. Two alloys of the P/M EP741NP co.position were atomized： one alloy co.tained 0.26%Hfand the other was Hf free. After the as-atomized powders from both alloys were characterized, the powders were extruded into billets, forged and heat treated. After each process, the microstructures were characterized by SEM and the phases were extracted and identified by X-ray diffraction. The presence of Hf in the residues was probed by EDS （energy dispersive spectrosco.y）. The alloys were given the published Russian heat treatment as well as a more co.ventional heat treatment more typical of western powder alloys. Tensile, creep and stress rupture mechanical property tests were run. Results of the structural behavior of the alloys after each processing step will be presented and discussed. The role of the Hfon the mechanical properties will be discussed.

关键词： P/M powder metallurgy X-ray diffraction EP741NP

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：