基于正交回归的GH44合金本构关系研究  

Research on constitutive equation of GH44 nickel base alloy based on orthogonal regression

作　　者：侯红亮[1] 姜波[1] 王耀奇[1] 李志强[1] 任学平[2] 

机构地区：[1]北京航空制造工程研究所,北京100024 [2]北京科技大学,北京100083

出　　处：《锻压技术》2005年第1期61-63,共3页Forging & Stamping Technology

摘　　要：　　 通过热物理模拟试验, 系统地研究了主要热力参数 (变形温度、变形速率、变形程度) 与流动应力间的数值关系, 采用正交设计原理, 科学地分析并回归出 GH44 合金的本构方程, 定性地探讨热力参数对 GH44 合金成形性能的影响规律, 为GH44合金的热变形数值模拟和热力参数的合理制定与控制提供了依据。The numerical relationship between the flow stress and parameters of hot and force (deformation temperature, deformation rate and deformation degree) is studied through hot physical simulation. Meanwhile, the regularities of the influence on the parameters of hot and force to formability is discussed qualitatively, and constitutive equation on GH44 nickel based alloy is regressed with mathematic statistics analysisTherefore, a scientific basis is provided for both numerical simulation of hot deformation and rational choice and control of parameters of hot and force

关 键 词：合金 变形速率 流动应力 变形程度 变形温度 成形性能 热变形 正交回归 数值关系 本构关系 

分 类 号：TG115[金属学及工艺—物理冶金]