BFe10-1-1合金的热压缩变形行为与本构关系研究  

Research on Isothermal Compression Deformation Behavior and Constitutive Model of BFe10-1-1 Alloy

作　　者：刘乐乐 韩茂盛[1] 梁晨 苑伟 LIU Lele;HAN Maosheng;LIANG Chen;YUAN Wei(Luoyang Ship Material Research Institute, Luoyang 471023, China)

机构地区：[1]中国船舶重工集团公司第七二五研究所

出　　处：《热加工工艺》2018年第22期97-100,105,共5页Hot Working Technology

摘　　要：采用Gleeble-3500热模拟实验机,研究了BFe10-1-1合金在变形温度800~1000℃、应变速率0.01~15s-1条件下的等温热压缩流变应力行为。结果表明,该合金的流变应力随着应变速率的增大而增大,随着变形温度的升高而降低。求解得到了该合金的材料常数如下:结构因子A为1.405×10^12、变形激活能Q为305.2kJ/mol、应力指数n为7.728、应力水平参数α为0.0139MPa-1。应变速率和变形温度对合金流变应力的影响可用包含Arrhenius等式的Z参数表示。The isothermal compression deformation behavior of BFe10-1-1 alloy was investigated at 800-1000 ℃ with the strain rate from 0.01 s-1 to 15 s-1 by Gleeble-3500 thermal simulator. The results indicate that the flow stress of the alloy increases with the increase of the strain rate and decreases with the increase of deformation temperature. The constants of the alloy material are obtained as follows: structure factor A of 1.405×10^12 , deformation activation energy Q of 305.2 kJ/mol, stress exponent n of 7.728 and stress level parameter α of 0.0139 MPa-1 . The effects of strain rate and deformation temperature on the hot deformation behavior can be represented by Zener-Hollomon parameter including Arrhenius equation.

关 键 词：BFe10-1-1合金 热压缩变形 流变应力 本构方程 

分 类 号：TG146.11[一般工业技术—材料科学与工程]