Processing maps for Fe�??24Ni�??11Cr�??3Ti�??1Mo superalloy

Bulletin of materials science

Cai Dayong¹  Tang Zhiguo¹  Wang Peng¹  Dong Haifeng¹  Zhang Chunling¹ 

[1] State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao 066004, Hebei, China$$State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao 066004, Hebei, ChinaState Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao 066004, Hebei, China$$

关键词: Superalloy;    hot deformation;    efficiency of power dissipation;    processing maps.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Hot deformation characteristics of a Fe-base superalloy were studied at various temperatures from 1000�??1200°C under strain rates from 0.001�??1 s^-1 using hot compression tests. Processing maps for hot working are developed on the basis of the variations of efficiency of power dissipation with temperature and strain rate and interpreted by a dynamic materials model. Hot deformation equation was given to characterize the dependence of peak stress on deformation temperature and strain rate. Hot deformation apparent activation energy of the Fe�??24Ni�??11Cr�??1Mo�??3Ti superalloy was determined to be about 499 kJ/mol. The processing maps obtained in a strain range of 0.1�??0.7 were essentially similar, indicating that strain has no significant influence on it. The processing maps exhibited a clear domain with a maximum of about 40�??48% at about 1150°C and 0.001 s^-1.

【 授权许可】

Unknown