Transactions of Materials and Heat Treatment

Title：Hot deformation behavior and hot processing map of high-entropy alloy Fe2Ni2 CrAl

Authors： Guo Ruihua Liu Yi Lyu Xiaoning Ma Chao Zhang Fuli Zhao Peiyi Wang Yufei

Unit： HBIS Materials Technology Research Institute

KeyWords： high-entropy alloy constitutive equation Fe2Ni2CrAl hot deformation hot processing map

ClassificationCode：TG139

year,vol(issue):pagenumber：2025,50(7):255-262

Abstract：

To address the problem that high-entropy alloy Fe2Ni2CrAl is very susceptible to cracking during the hot working process, thermal compression experiments were carried out using the Gleeble-3800 thermal simulation testing machine with the strain rates of 0.001, 0.01 and 0.1 s-1 and the temperatures of 1173, 1273, 1373 and 1473 K. The results show that the rheological stress decreases with the increasing of deformation temperature under the condition of constant strain rate, and increases with the increasing of strain rate under the condition of constant deformation temperature. Using the Arrhenius equation combined with relevant material parameters, the constitutive equation of this high-entropy alloy was constructed and corrected. The results show that the corrected constitutive equation has better prediction accuracy for Fe2Ni2CrAl high-entropy alloy. Based on the dynamic material model (DMM) theory, the hot processing map of Fe2Ni2CrAl high-entropy alloy is calculated and its suitable hot processing interval is determined as:the temperature of 1420 K and the strain rate of 0.001 s-1.

Funds：

河北省科技重大专项（22281007Z）

作者简介：郭瑞华（1993-），男，硕士，工程师 E-mail：guoruihua@hbisco.com 通信作者：张福利（1984-），男，硕士，正高级工程师 E-mail：zhangfuli@hbisco.com

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