Transactions of Materials and Heat Treatment

Title：High temperature deformation behavior and constitutive model of anti-corrosion superalloy N08120

Authors： Wang Xuming1 Niu Liqun1 2 Chang Fuqiang1 Li Guozhou1 Wang Bingzheng1 Liu Lin1 Liang Zhenglong2

Unit： Lanzhou Lanshi Super Alloy New Material Co. Ltd. 2.School of Mechanical and Electronical Engineering

KeyWords： anti-corrosion superalloy N08120 high temperature deformation behavior constitutive model recrystallization rolling

ClassificationCode：O347.3

year,vol(issue):pagenumber：2024,49(8):263-268

Abstract：

Aiming at the problems of coarse grain, cracking and flaw detection without bottom wave in the forging and rolling process of corrosion resistant superalloy N08120, the high temperature deformation behavior of corrosion resistant superalloy N08120 at the temperature of 850-1250 ℃ and the strain rate of 0.01-1 s-1 was studied by Gleeble-1500D thermal simulation testing machine. Based on the Hansel-Spittle constitutive model,the parameters of constitutire equation were calibrated, which laid a foundation for the numerical simulation of the forging and rolling process of corrosion-resistant superalloy N08810. Combined with the microstructure evolution process, the causes of stress softening were analyzed, and it was found that reducing the temperature and increasing the strain rate helped to refine the grain. The rolling force calculated by simulating the rolling process of sheet was compared with the actual production data, the validity of the Hansel-Spittle constitutive model and parameters of consitutive equation was verified.

Funds：

甘肃省教育厅青年博士支持项目(2024QB-030)；甘肃省联合科研基金重大项目(23JRRA1561)；甘肃省联合科研基金重点项目(23JRRA1562)；甘肃省2024年度技术创新引导计划-科技专员专项；兰州理工大学“红柳杰出青年人才支持计划”

作者简介：王旭明（1991-），男，学士，副高级工程师 E-mail：wxm0720@163.com 通信作者：牛立群（1984-），男，博士，讲师 E-mail：niuliqun111@126.com

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