MICROSTRUCTURAL EVOLUTION AND CONTROL IN SUPERALLOY FORGINGS

作     者：R.Noel, D. Furrer, G. Shen and J. Lemsky(Ladish Co., Inc., P.O. Box 8902, Cudahy, WI 53110-8902, USA 

作者机构：Ladish Co. Inc. Cudahy United States 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：1996年第9卷第6期

页      面：437-442页

核心收录：

学科分类：0810[工学-信息与通信工程] 080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 080201[工学-机械制造及其自动化] 

主　　题：forging process modeling microstructure 

摘      要：Optimum properties of high temperature superalloys are derived from interactions of the composition,thermomechanical deformation, and heat ***-base alloys contain a variety of alloying elements in a large number of combinations to produce various desired effects. The general characteristics of any specific nickelbase superalloy is determined by *** control of the microstructure in wrought processed superalloys can further influence the resultant component *** relationship between microstructure and properties is key in advanced design and manufacture of turbine engine components, 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,combination process is the Ladish Iso Con process which utilizes isothermal forging and conventional forging to achieve unique properties not matched by any other single *** utilizes forging presses for conventional 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